MADINETH MUY M.D.
Prescription History 1992807721
Internal Medicine in Lake Forest, CA
What does Dr. Muy prescribe?
In 2024, Dr. Muy wrote 4,108 Medicare prescriptions for 103 medications. The most prescribed was Atorvastatin Calcium, with 347 prescriptions for 104 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Dr. Muy prescribes.
Medications 103 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other California prescribers.
What it is used for
Atorvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 347 prescriptions for Atorvastatin Calcium, about 1.7 times as often as the typical California prescriber of it (202). Medicare paid $9.00 per fill, versus $10.47 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with California prescribers
Dr. Muy wrote 244 prescriptions for Levothyroxine Sodium, about 2 times as often as the typical California prescriber of it (125). Medicare paid $13.49 per fill, versus $13.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 152 prescriptions for Amlodipine Besylate, about as often as the typical California prescriber of it (141). Medicare paid $6.49 per fill, versus $7.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Lisinopril is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 148 prescriptions for Lisinopril, about 1.5 times as often as the typical California prescriber of it (98). Medicare paid $8.31 per fill, versus $8.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Rosuvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 144 prescriptions for Rosuvastatin Calcium, about 1.4 times as often as the typical California prescriber of it (101). Medicare paid $17.68 per fill, versus $15.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Simvastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 108 prescriptions for Simvastatin, about 1.7 times as often as the typical California prescriber of it (63). Medicare paid $6.24 per fill, versus $9.03 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Alprazolam is used to treat anxiety and panic disorders.
Compared with California prescribers
Dr. Muy wrote 105 prescriptions for Alprazolam, about 2.1 times as often as the typical California prescriber of it (50). Medicare paid $3.97 per fill, versus $5.37 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Zolpidem is used for a short time to treat a certain sleep problem (insomnia) in adults.
Compared with California prescribers
Dr. Muy wrote 96 prescriptions for Zolpidem Tartrate, about 2.1 times as often as the typical California prescriber of it (45). Medicare paid $6.71 per fill, versus $6.02 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with California prescribers
Dr. Muy wrote 94 prescriptions for Metoprolol Succinate, about as often as the typical California prescriber of it (86). Medicare paid $20.19 per fill, versus $14.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder).
Compared with California prescribers
Dr. Muy wrote 92 prescriptions for Sertraline Hcl, about 2 times as often as the typical California prescriber of it (46). Medicare paid $6.94 per fill, versus $9.59 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Dr. Muy wrote 89 prescriptions for Metformin Hcl Er, about 1.6 times as often as the typical California prescriber of it (55). Medicare paid $11.27 per fill, versus $9.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fluticasone is used to relieve seasonal and year-round allergic and non-allergic nasal symptoms, such as stuffy/runny nose, itching, and sneezing.
Compared with California prescribers
Dr. Muy wrote 83 prescriptions for Fluticasone Propionate, about 1.7 times as often as the typical California prescriber of it (50). Medicare paid $11.09 per fill, versus $15.10 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with California prescribers
Dr. Muy wrote 82 prescriptions for Losartan Potassium, about 68% as often as the typical California prescriber of it (121). Medicare paid $9.56 per fill, versus $10.35 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with California prescribers
Dr. Muy wrote 74 prescriptions for Alendronate Sodium, about 1.2 times as often as the typical California prescriber of it (61). Medicare paid $9.68 per fill, versus $9.65 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with California prescribers
Dr. Muy wrote 73 prescriptions for Potassium Chloride, about 1.5 times as often as the typical California prescriber of it (48). Medicare paid $26.71 per fill, versus $24.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with California prescribers
Dr. Muy wrote 72 prescriptions for Omeprazole, about as often as the typical California prescriber of it (78). Medicare paid $14.14 per fill, versus $11.26 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 66 prescriptions for Hydrochlorothiazide, about as often as the typical California prescriber of it (62). Medicare paid $4.49 per fill, versus $5.71 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with California prescribers
Dr. Muy wrote 56 prescriptions for Synthroid, about 1.5 times as often as the typical California prescriber of it (38). Medicare paid $75.36 per fill, versus $74.43 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease.
Compared with California prescribers
Dr. Muy wrote 54 prescriptions for Furosemide, about 84% as often as the typical California prescriber of it (64). Medicare paid $5.77 per fill, versus $6.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Valsartan is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Muy wrote 51 prescriptions for Valsartan, about 1.3 times as often as the typical California prescriber of it (39). Medicare paid $27.02 per fill, versus $28.57 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Dr. Muy wrote 47 prescriptions for Metformin Hcl, about half as often as the typical California prescriber of it (100). Medicare paid $7.03 per fill, versus $9.26 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Olmesartan is used to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 47 prescriptions for Olmesartan Medoxomil, about as often as the typical California prescriber of it (48). Medicare paid $26.11 per fill, versus $18.88 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Dr. Muy wrote 44 prescriptions for Escitalopram Oxalate, about as often as the typical California prescriber of it (48). Medicare paid $19.61 per fill, versus $11.14 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Dr. Muy wrote 43 prescriptions for Duloxetine Hcl, about as often as the typical California prescriber of it (40). Medicare paid $76.49 per fill, versus $24.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with California prescribers
Dr. Muy wrote 43 prescriptions for Pantoprazole Sodium, about 66% as often as the typical California prescriber of it (65). Medicare paid $10.33 per fill, versus $13.87 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a hormone.
Compared with California prescribers
Dr. Muy wrote 39 prescriptions for Estradiol, about as often as the typical California prescriber of it (38). Medicare paid $80.13 per fill, versus $56.87 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Muy wrote 39 prescriptions for Gabapentin, about half as often as the typical California prescriber of it (80). Medicare paid $19.22 per fill, versus $15.63 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used to relieve moderate to severe pain.
Compared with California prescribers
Dr. Muy wrote 38 prescriptions for Hydrocodone-Acetaminophen, about half as often as the typical California prescriber of it (76). Medicare paid $16.86 per fill, versus $21.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Pravastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 38 prescriptions for Pravastatin Sodium, about as often as the typical California prescriber of it (38). Medicare paid $8.34 per fill, versus $13.25 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 37 prescriptions for Atenolol, about 74% as often as the typical California prescriber of it (50). Medicare paid $1.62 per fill, versus $9.20 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety, panic attacks, and social anxiety disorder).
Compared with California prescribers
Dr. Muy wrote 36 prescriptions for Venlafaxine Hcl Er, about 1.3 times as often as the typical California prescriber of it (28). Medicare paid $24.72 per fill, versus $23.92 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Sumatriptan is used to treat migraines.
Compared with California prescribers
Dr. Muy wrote 35 prescriptions for Sumatriptan Succinate, about 1.5 times as often as the typical California prescriber of it (24). Medicare paid $13.98 per fill, versus $17.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a variety of bacterial infections.
Compared with California prescribers
Dr. Muy wrote 34 prescriptions for Ciprofloxacin Hcl, about as often as the typical California prescriber of it (30). Medicare paid $6.50 per fill, versus $6.32 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with California prescribers
Dr. Muy wrote 34 prescriptions for Ezetimibe, about 67% as often as the typical California prescriber of it (51). Medicare paid $23.68 per fill, versus $26.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Muy wrote 33 prescriptions for Amoxicillin-Clavulanate Potass, about 1.3 times as often as the typical California prescriber of it (26). Medicare paid $6.51 per fill, versus $9.18 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Spironolactone is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Muy wrote 33 prescriptions for Spironolactone, about 88% as often as the typical California prescriber of it (37). Medicare paid $16.09 per fill, versus $10.05 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Albuterol (also known as salbutamol) is used to prevent and treat wheezing and shortness of breath caused by breathing problems (such as asthma, chronic obstructive pulmonary disease).
Compared with California prescribers
Dr. Muy wrote 32 prescriptions for Albuterol Sulfate Hfa, about half as often as the typical California prescriber of it (58). Medicare paid $24.03 per fill, versus $28.70 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with California prescribers
Dr. Muy wrote 31 prescriptions for Allopurinol, about 70% as often as the typical California prescriber of it (44). Medicare paid $20.63 per fill, versus $10.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Semaglutide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Muy wrote 31 prescriptions for Ozempic, about half as often as the typical California prescriber of it (56). Medicare paid $1,686.29 per fill, versus $1,102.15 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to relieve nasal symptoms such as runny/itching/stuffy nose, sneezing, and post-nasal drip caused by allergies or other conditions.
Compared with California prescribers
Dr. Muy wrote 30 prescriptions for Azelastine Hcl, about 63% as often as the typical California prescriber of it (47). Medicare paid $23.94 per fill, versus $22.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with California prescribers
Dr. Muy wrote 29 prescriptions for Famotidine, about half as often as the typical California prescriber of it (54). Medicare paid $13.87 per fill, versus $12.66 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Muy wrote 29 prescriptions for Glipizide Er, about as often as the typical California prescriber of it (30). Medicare paid $19.74 per fill, versus $17.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 29 prescriptions for Lisinopril-Hydrochlorothiazide, about 74% as often as the typical California prescriber of it (39). Medicare paid $10.44 per fill, versus $10.59 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This is a long-acting form of oxybutynin that is used to treat overactive bladder and urinary conditions.
Compared with California prescribers
Dr. Muy wrote 29 prescriptions for Oxybutynin Chloride Er, about as often as the typical California prescriber of it (30). Medicare paid $12.51 per fill, versus $23.09 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fenofibrate is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 27 prescriptions for Fenofibrate, about as often as the typical California prescriber of it (27). Medicare paid $33.36 per fill, versus $64.75 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with California prescribers
Dr. Muy wrote 27 prescriptions for Fluoxetine Hcl, about 81% as often as the typical California prescriber of it (33). Medicare paid $8.33 per fill, versus $11.85 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Sitagliptin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Dr. Muy wrote 27 prescriptions for Januvia, about 65% as often as the typical California prescriber of it (41). Medicare paid $1,065.78 per fill, versus $915.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Meloxicam is used to treat arthritis.
Compared with California prescribers
Dr. Muy wrote 27 prescriptions for Meloxicam, about half as often as the typical California prescriber of it (50). Medicare paid $6.14 per fill, versus $4.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with California prescribers
Dr. Muy wrote 26 prescriptions for Tramadol Hcl, about half as often as the typical California prescriber of it (44). Medicare paid $3.55 per fill, versus $6.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Valacyclovir is used to treat infections caused by certain types of viruses.
Compared with California prescribers
Dr. Muy wrote 26 prescriptions for Valacyclovir, about 1.2 times as often as the typical California prescriber of it (22). Medicare paid $17.44 per fill, versus $35.75 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Carvedilol is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Muy wrote 25 prescriptions for Carvedilol, about half as often as the typical California prescriber of it (56). Medicare paid $9.46 per fill, versus $8.98 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a certain sleep problem (insomnia).
Compared with California prescribers
Dr. Muy wrote 25 prescriptions for Temazepam, about 88% as often as the typical California prescriber of it (28). Medicare paid $11.03 per fill, versus $13.53 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with California prescribers
Dr. Muy wrote 25 prescriptions for Trazodone Hcl, about half as often as the typical California prescriber of it (57). Medicare paid $6.57 per fill, versus $9.93 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a nonsteroidal anti-inflammatory drug (NSAID), specifically a COX-2 inhibitor, which relieves pain and swelling (inflammation).
Compared with California prescribers
Dr. Muy wrote 24 prescriptions for Celecoxib, about half as often as the typical California prescriber of it (46). Medicare paid $54.04 per fill, versus $32.27 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Muy wrote 23 prescriptions for Azithromycin, about 60% as often as the typical California prescriber of it (38). Medicare paid $3.56 per fill, versus $4.49 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Lovastatin is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 23 prescriptions for Lovastatin, about 76% as often as the typical California prescriber of it (30). Medicare paid $9.74 per fill, versus $10.38 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with California prescribers
Dr. Muy wrote 22 prescriptions for Tamsulosin Hcl, about 26% as often as the typical California prescriber of it (84). Medicare paid $16.36 per fill, versus $15.02 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Clopidogrel is used to prevent heart attacks and strokes in persons with heart disease (recent heart attack), recent stroke, or blood circulation disease (peripheral vascular disease).
Compared with California prescribers
Dr. Muy wrote 21 prescriptions for Clopidogrel, about half as often as the typical California prescriber of it (48). Medicare paid $10.75 per fill, versus $12.42 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Apixaban is used to prevent serious blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip/knee replacement surgery.
Compared with California prescribers
Dr. Muy wrote 21 prescriptions for Eliquis, about 29% as often as the typical California prescriber of it (73). Medicare paid $665.50 per fill, versus $923.33 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Enalapril is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 21 prescriptions for Enalapril Maleate, about 85% as often as the typical California prescriber of it (25). Medicare paid $30.01 per fill, versus $16.17 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood.
Compared with California prescribers
Dr. Muy wrote 21 prescriptions for Klor-Con 10, about 1.2 times as often as the typical California prescriber of it (18). Medicare paid $16.47 per fill, versus $16.96 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 20 prescriptions for Metoprolol Tartrate, about 35% as often as the typical California prescriber of it (57). Medicare paid $9.26 per fill, versus $7.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with California prescribers
Dr. Muy wrote 20 prescriptions for Montelukast Sodium, about 41% as often as the typical California prescriber of it (49). Medicare paid $9.78 per fill, versus $10.71 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is a combination of two drugs: a calcium channel blocker (amlodipine) and an ACE inhibitor (benazepril).
Compared with California prescribers
Dr. Muy wrote 19 prescriptions for Amlodipine Besylate-Benazepril, about 71% as often as the typical California prescriber of it (27). Medicare paid $6.07 per fill, versus $15.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination of nirmatrelvir and ritonavir is used to treat coronavirus disease (COVID-19) in people who have mild to moderate symptoms and have a high risk for COVID-19 complications.
Compared with California prescribers
Dr. Muy wrote 19 prescriptions for Paxlovid, about 79% as often as the typical California prescriber of it (24). Medicare paid $75.21 per fill, versus $42.82 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat anxiety.
Compared with California prescribers
Dr. Muy wrote 18 prescriptions for Lorazepam, about 42% as often as the typical California prescriber of it (43). Medicare paid $13.42 per fill, versus $6.52 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 18 prescriptions for Telmisartan, about half as often as the typical California prescriber of it (33). Medicare paid $47.50 per fill, versus $29.01 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to control and prevent symptoms (such as wheezing and shortness of breath) caused by asthma and ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Dr. Muy wrote 18 prescriptions for Trelegy Ellipta, about 32% as often as the typical California prescriber of it (57). Medicare paid $731.65 per fill, versus $801.62 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This drug is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 18 prescriptions for Triamterene-Hydrochlorothiazid, about 68% as often as the typical California prescriber of it (27). Medicare paid $3.52 per fill, versus $9.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ramipril is used to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 17 prescriptions for Ramipril, about 71% as often as the typical California prescriber of it (24). Medicare paid $12.20 per fill, versus $10.33 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat blood clots (such as in deep vein thrombosis-DVT or pulmonary embolus-PE) and/or to prevent new clots from forming in your body.
Compared with California prescribers
Dr. Muy wrote 17 prescriptions for Warfarin Sodium, about half as often as the typical California prescriber of it (40). Medicare paid $8.62 per fill, versus $11.33 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with California prescribers
Dr. Muy wrote 16 prescriptions for Bupropion Xl, about half as often as the typical California prescriber of it (35). Medicare paid $24.68 per fill, versus $25.68 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Fenofibrate is used along with a proper diet to help lower "bad" cholesterol and fats (such as LDL, triglycerides) and raise "good" cholesterol (HDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 16 prescriptions for Fenofibrate, about half as often as the typical California prescriber of it (28). Medicare paid $19.41 per fill, versus $26.18 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Progesterone is a type of hormone (progestin).
Compared with California prescribers
Dr. Muy wrote 16 prescriptions for Progesterone, about half as often as the typical California prescriber of it (32). Medicare paid $27.34 per fill, versus $38.00 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Acyclovir is used to treat infections caused by certain types of viruses.
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Acyclovir, about half as often as the typical California prescriber of it (25). Medicare paid $6.72 per fill, versus $18.27 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat anxiety.
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Buspirone Hcl, about 41% as often as the typical California prescriber of it (37). Medicare paid $10.71 per fill, versus $13.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used to treat a variety of inflamed fungal skin infections such as ringworm, athlete's foot, and jock itch.
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Clotrimazole-Betamethasone, about half as often as the typical California prescriber of it (29). Medicare paid $28.92 per fill, versus $20.23 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a wide variety of bacterial infections, including those that cause acne.
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Doxycycline Hyclate, about half as often as the typical California prescriber of it (29). Medicare paid $10.48 per fill, versus $13.89 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is an antibiotic used to treat bladder infections (acute cystitis).
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Nitrofurantoin Mono-Macro, about half as often as the typical California prescriber of it (26). Medicare paid $16.52 per fill, versus $13.21 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder, anxiety disorders, post-traumatic stress disorder).
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Paroxetine Hcl, about 60% as often as the typical California prescriber of it (25). Medicare paid $17.01 per fill, versus $12.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This drug is used to treat high blood pressure.
Compared with California prescribers
Dr. Muy wrote 15 prescriptions for Valsartan-Hydrochlorothiazide, about half as often as the typical California prescriber of it (28). Medicare paid $22.00 per fill, versus $30.91 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Amoxicillin is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Muy wrote 14 prescriptions for Amoxicillin, about 37% as often as the typical California prescriber of it (38). Medicare paid $1.55 per fill, versus $4.15 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Irbesartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with California prescribers
Dr. Muy wrote 14 prescriptions for Irbesartan, about 41% as often as the typical California prescriber of it (34). Medicare paid $49.10 per fill, versus $19.83 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Autoshield Duo Pen Needle, about half as often as the typical California prescriber of it (24). Medicare paid $97.59 per fill, versus $98.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Cephalexin, about half as often as the typical California prescriber of it (30). Medicare paid $3.11 per fill, versus $7.62 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Citalopram Hbr, about half as often as the typical California prescriber of it (30). Medicare paid $5.33 per fill, versus $8.24 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Diazepam is used to treat anxiety, alcohol withdrawal, and seizures.
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Diazepam, about half as often as the typical California prescriber of it (24). Medicare paid $7.59 per fill, versus $6.79 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a certain sleep problem (insomnia).
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Eszopiclone, about 64% as often as the typical California prescriber of it (20). Medicare paid $21.73 per fill, versus $24.07 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ipratropium is used to treat a runny nose caused by the common cold or seasonal allergies.
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Ipratropium Bromide, about 37% as often as the typical California prescriber of it (35). Medicare paid $20.03 per fill, versus $31.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Labetalol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Labetalol Hcl, about half as often as the typical California prescriber of it (25). Medicare paid $21.15 per fill, versus $29.18 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury).
Compared with California prescribers
Dr. Muy wrote 13 prescriptions for Tizanidine Hcl, about 35% as often as the typical California prescriber of it (37). Medicare paid $11.33 per fill, versus $11.76 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Acetaminophen-Codeine, about 41% as often as the typical California prescriber of it (29). Medicare paid $9.09 per fill, versus $17.48 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Glipizide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Glipizide, about 24% as often as the typical California prescriber of it (49). Medicare paid $12.18 per fill, versus $10.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ibandronate is used to prevent and treat certain types of bone loss (osteoporosis).
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Ibandronate Sodium, about half as often as the typical California prescriber of it (28). Medicare paid $38.36 per fill, versus $24.91 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Methylprednisolone is used to treat conditions such as arthritis, blood disorders, severe allergic reactions, certain cancers, eye conditions, skin/kidney/intestinal/lung diseases, and immune system disorders.
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Methylprednisolone, about 40% as often as the typical California prescriber of it (30). Medicare paid $8.13 per fill, versus $6.84 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Tirzepatide is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Mounjaro, about 27% as often as the typical California prescriber of it (45). Medicare paid $1,509.00 per fill, versus $1,191.18 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Nystatin is used to treat fungal skin infections.
Compared with California prescribers
Dr. Muy wrote 12 prescriptions for Nystatin, about half as often as the typical California prescriber of it (22). Medicare paid $15.41 per fill, versus $20.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Rabeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Aciphex, about as often as the typical California prescriber of it (12). Medicare paid $852.69 per fill, versus $1,170.53 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Butalb-Acetaminoph-Caff-Codein, about 75% as often as the typical California prescriber of it (15). Medicare paid $57.15 per fill, versus $141.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Meclizine Hcl, about 30% as often as the typical California prescriber of it (37). Medicare paid $2.21 per fill, versus $7.01 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Mupirocin is used to treat certain skin infections (such as impetigo).
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Mupirocin, about 34% as often as the typical California prescriber of it (33). Medicare paid $9.01 per fill, versus $7.89 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Omega-3 acid ethyl esters, a type of fat found in fish oil, is used along with diet and exercise to help lower levels of a certain blood fat (triglyceride).
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Omega-3 Acid Ethyl Esters, about 35% as often as the typical California prescriber of it (32). Medicare paid $87.12 per fill, versus $54.90 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Evolocumab is used along with a proper diet to help lower "bad" cholesterol (LDL) in the blood.
Compared with California prescribers
Dr. Muy wrote 11 prescriptions for Repatha Syringe, about half as often as the typical California prescriber of it (19). Medicare paid $1,004.60 per fill, versus $768.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Muy’s prescriptions
What does Dr. Muy prescribe most?
In 2024 Medicare Part D data, Dr. Muy's most prescribed medications were Atorvastatin Calcium (347), Levothyroxine Sodium (244) and Amlodipine Besylate (152).
How does Dr. Muy's prescribing compare with other California prescribers?
Of the 103 medications with a state comparison, Dr. Muy prescribes 16 more often than the typical California prescriber, 24 about as often and 63 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Muy prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the California prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
