GARY FRANK RIVAS RD, PA-C
Prescription History 1477895621
Physician Assistant in El Monte, CA
What does Gary Rivas prescribe?
In 2024, Gary Rivas wrote 3,180 Medicare prescriptions for 80 medications. The most prescribed was Atorvastatin Calcium, with 289 prescriptions for 138 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 Gary Rivas prescribes.
Medications 80 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
Gary Rivas wrote 289 prescriptions for Atorvastatin Calcium, about 1.4 times as often as the typical California prescriber of it (202). Medicare paid $9.96 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Gary Rivas wrote 134 prescriptions for Metformin Hcl, about 1.3 times as often as the typical California prescriber of it (100). Medicare paid $8.24 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Gary Rivas wrote 124 prescriptions for Amlodipine Besylate, about 88% as often as the typical California prescriber of it (141). Medicare paid $4.37 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
Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes.
Compared with California prescribers
Gary Rivas wrote 117 prescriptions for Losartan Potassium, about as often as the typical California prescriber of it (121). Medicare paid $10.40 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with California prescribers
Gary Rivas wrote 115 prescriptions for Omeprazole, about 1.5 times as often as the typical California prescriber of it (78). Medicare paid $10.48 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
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
Gary Rivas wrote 109 prescriptions for Albuterol Sulfate Hfa, about 1.9 times as often as the typical California prescriber of it (58). Medicare paid $20.41 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
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with California prescribers
Gary Rivas wrote 100 prescriptions for Ibuprofen, about 2.4 times as often as the typical California prescriber of it (42). Medicare paid $8.30 per fill, versus $6.71 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
Gary Rivas wrote 100 prescriptions for Levothyroxine Sodium, about 80% as often as the typical California prescriber of it (125). Medicare paid $11.85 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
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
Gary Rivas wrote 93 prescriptions for Furosemide, about 1.4 times as often as the typical California prescriber of it (64). Medicare paid $7.11 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Gary Rivas wrote 92 prescriptions for Gabapentin, about as often as the typical California prescriber of it (80). Medicare paid $20.19 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with California prescribers
Gary Rivas wrote 87 prescriptions for Pantoprazole Sodium, about 1.3 times as often as the typical California prescriber of it (65). Medicare paid $8.95 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
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
Gary Rivas wrote 84 prescriptions for Rosuvastatin Calcium, about 83% as often as the typical California prescriber of it (101). Medicare paid $17.41 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with California prescribers
Gary Rivas wrote 80 prescriptions for Tamsulosin Hcl, about as often as the typical California prescriber of it (84). Medicare paid $18.34 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
Lisinopril is used to treat high blood pressure.
Compared with California prescribers
Gary Rivas wrote 73 prescriptions for Lisinopril, about 75% as often as the typical California prescriber of it (98). Medicare paid $6.76 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
See also Warning section.
Compared with California prescribers
Gary Rivas wrote 55 prescriptions for Diclofenac Sodium, about 1.2 times as often as the typical California prescriber of it (47). Medicare paid $15.33 per fill, versus $107.23 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
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
Gary Rivas wrote 49 prescriptions for Clopidogrel, about as often as the typical California prescriber of it (48). Medicare paid $10.92 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
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with California prescribers
Gary Rivas wrote 48 prescriptions for Alendronate Sodium, about 79% as often as the typical California prescriber of it (61). Medicare paid $6.15 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 beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with California prescribers
Gary Rivas wrote 48 prescriptions for Metoprolol Succinate, about half as often as the typical California prescriber of it (86). Medicare paid $19.45 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
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
Gary Rivas wrote 45 prescriptions for Glipizide, about as often as the typical California prescriber of it (49). Medicare paid $25.30 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
This medication is used to treat high blood pressure.
Compared with California prescribers
Gary Rivas wrote 45 prescriptions for Hydrochlorothiazide, about 73% as often as the typical California prescriber of it (62). Medicare paid $4.81 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
Clotrimazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and other fungal skin infections (candidiasis).
Compared with California prescribers
Gary Rivas wrote 40 prescriptions for Clotrimazole, about 1.2 times as often as the typical California prescriber of it (33). Medicare paid $9.33 per fill, versus $22.98 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
Pioglitazone is a diabetes drug (thiazolidinedione-type, also called "glitazones") used along with a proper diet and exercise program to control high blood sugar in patients with type 2 diabetes.
Compared with California prescribers
Gary Rivas wrote 39 prescriptions for Pioglitazone Hcl, about as often as the typical California prescriber of it (41). Medicare paid $12.74 per fill, versus $13.99 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
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
Gary Rivas wrote 39 prescriptions for Pravastatin Sodium, about as often as the typical California prescriber of it (38). Medicare paid $14.27 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
See also Warning section.
Compared with California prescribers
Gary Rivas wrote 38 prescriptions for Naproxen, about 1.3 times as often as the typical California prescriber of it (29). Medicare paid $7.64 per fill, versus $9.70 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
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
Gary Rivas wrote 36 prescriptions for Famotidine, about 67% as often as the typical California prescriber of it (54). Medicare paid $15.82 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
Finasteride is used to shrink an enlarged prostate (benign prostatic hyperplasia or BPH) in adult men.
Compared with California prescribers
Gary Rivas wrote 36 prescriptions for Finasteride, about 64% as often as the typical California prescriber of it (56). Medicare paid $11.35 per fill, versus $13.71 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 medication is used to treat depression.
Compared with California prescribers
Gary Rivas wrote 36 prescriptions for Mirtazapine, about 89% as often as the typical California prescriber of it (40). Medicare paid $18.75 per fill, versus $19.05 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
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
Gary Rivas wrote 35 prescriptions for Fluticasone Propionate, about 70% as often as the typical California prescriber of it (50). Medicare paid $21.96 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
See also Warning section.
Compared with California prescribers
Gary Rivas wrote 35 prescriptions for Tramadol Hcl, about 80% as often as the typical California prescriber of it (44). Medicare paid $2.74 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
Ezetimibe is used along with a low cholesterol/low fat diet and exercise to help lower cholesterol in the blood.
Compared with California prescribers
Gary Rivas wrote 34 prescriptions for Ezetimibe, about 67% as often as the typical California prescriber of it (51). Medicare paid $24.47 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
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
Gary Rivas wrote 32 prescriptions for Simvastatin, about half as often as the typical California prescriber of it (63). Medicare paid $7.12 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
Benazepril is used to treat high blood pressure (hypertension).
Compared with California prescribers
Gary Rivas wrote 30 prescriptions for Benazepril Hcl, about 87% as often as the typical California prescriber of it (35). Medicare paid $10.89 per fill, versus $11.17 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
Sitagliptin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Gary Rivas wrote 30 prescriptions for Januvia, about 73% as often as the typical California prescriber of it (41). Medicare paid $1,199.58 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
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Gary Rivas wrote 29 prescriptions for Duloxetine Hcl, about 72% as often as the typical California prescriber of it (40). Medicare paid $42.39 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
This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim.
Compared with California prescribers
Gary Rivas wrote 28 prescriptions for Sulfamethoxazole-Trimethoprim, about as often as the typical California prescriber of it (25). Medicare paid $2.14 per fill, versus $4.62 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
Hydroxyzine is used to treat itching caused by allergies.
Compared with California prescribers
Gary Rivas wrote 27 prescriptions for Hydroxyzine Hcl, about as often as the typical California prescriber of it (28). Medicare paid $32.42 per fill, versus $13.85 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
Metformin is used with a proper diet and exercise program and possibly with other medications to control high blood sugar.
Compared with California prescribers
Gary Rivas wrote 27 prescriptions for Metformin Hcl Er, about half as often as the typical California prescriber of it (55). Medicare paid $13.79 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
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with California prescribers
Gary Rivas wrote 26 prescriptions for Donepezil Hcl, about half as often as the typical California prescriber of it (58). Medicare paid $9.89 per fill, versus $12.53 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 an antibiotic used to treat bladder infections (acute cystitis).
Compared with California prescribers
Gary Rivas wrote 25 prescriptions for Nitrofurantoin Mono-Macro, about as often as the typical California prescriber of it (26). Medicare paid $11.45 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
Azithromycin is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Gary Rivas wrote 24 prescriptions for Azithromycin, about 63% as often as the typical California prescriber of it (38). Medicare paid $3.78 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
Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease).
Compared with California prescribers
Gary Rivas wrote 24 prescriptions for Baclofen, about half as often as the typical California prescriber of it (42). Medicare paid $21.73 per fill, versus $14.75 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
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
Gary Rivas wrote 24 prescriptions for Eliquis, about 33% as often as the typical California prescriber of it (73). Medicare paid $1,381.87 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
Meloxicam is used to treat arthritis.
Compared with California prescribers
Gary Rivas wrote 24 prescriptions for Meloxicam, about half as often as the typical California prescriber of it (50). Medicare paid $2.03 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
This medication is used to treat pain caused by nerve damage due to diabetes, shingles (herpes zoster) infection, or spinal cord injury.
Compared with California prescribers
Gary Rivas wrote 24 prescriptions for Pregabalin, about 61% as often as the typical California prescriber of it (39). Medicare paid $16.48 per fill, versus $24.98 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
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with California prescribers
Gary Rivas wrote 23 prescriptions for Montelukast Sodium, about half as often as the typical California prescriber of it (49). Medicare paid $11.40 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
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
Gary Rivas wrote 23 prescriptions for Ozempic, about 41% as often as the typical California prescriber of it (56). Medicare paid $1,455.38 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
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Gary Rivas wrote 22 prescriptions for Atenolol, about half as often as the typical California prescriber of it (50). Medicare paid $2.44 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
Amoxicillin/clavulanic acid is a combination penicillin-type antibiotic used to treat a wide variety of bacterial infections.
Compared with California prescribers
Gary Rivas wrote 21 prescriptions for Amoxicillin-Clavulanate Potass, about 82% as often as the typical California prescriber of it (26). Medicare paid $4.73 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with California prescribers
Gary Rivas wrote 21 prescriptions for Lantus Solostar, about half as often as the typical California prescriber of it (36). Medicare paid $142.93 per fill, versus $110.37 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
This drug is used to treat high blood pressure.
Compared with California prescribers
Gary Rivas wrote 20 prescriptions for Losartan-Hydrochlorothiazide, about half as often as the typical California prescriber of it (39). Medicare paid $12.82 per fill, versus $13.09 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
Olmesartan is used to treat high blood pressure (hypertension).
Compared with California prescribers
Gary Rivas wrote 20 prescriptions for Olmesartan Medoxomil, about 42% as often as the typical California prescriber of it (48). Medicare paid $14.02 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, panic attacks, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder).
Compared with California prescribers
Gary Rivas wrote 20 prescriptions for Sertraline Hcl, about half as often as the typical California prescriber of it (46). Medicare paid $7.90 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
Ketoconazole is used to treat skin infections such as athlete's foot, jock itch, ringworm, and certain kinds of dandruff.
Compared with California prescribers
Gary Rivas wrote 19 prescriptions for Ketoconazole, about 39% as often as the typical California prescriber of it (49). Medicare paid $14.98 per fill, versus $21.18 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 product is a combination of two drugs: a calcium channel blocker (amlodipine) and an ACE inhibitor (benazepril).
Compared with California prescribers
Gary Rivas wrote 17 prescriptions for Amlodipine Besylate-Benazepril, about 63% as often as the typical California prescriber of it (27). Medicare paid $15.71 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 medication is used to treat fungal infections of the fingernails and toenails.
Compared with California prescribers
Gary Rivas wrote 17 prescriptions for Ciclopirox, about half as often as the typical California prescriber of it (32). Medicare paid $12.95 per fill, versus $24.93 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 laxative used to treat constipation.
Compared with California prescribers
Gary Rivas wrote 17 prescriptions for Lactulose, about half as often as the typical California prescriber of it (29). Medicare paid $26.89 per fill, versus $52.96 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
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
Compared with California prescribers
Gary Rivas wrote 17 prescriptions for Meclizine Hcl, about half as often as the typical California prescriber of it (37). Medicare paid $6.97 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
Spironolactone is used to treat high blood pressure and heart failure.
Compared with California prescribers
Gary Rivas wrote 17 prescriptions for Spironolactone, about half as often as the typical California prescriber of it (37). Medicare paid $14.14 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
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with California prescribers
Gary Rivas wrote 16 prescriptions for Fluoxetine Hcl, about half as often as the typical California prescriber of it (33). Medicare paid $13.62 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
This product is used to control and prevent symptoms (wheezing and shortness of breath) caused by asthma or ongoing lung disease (chronic obstructive pulmonary disease-COPD, which includes chronic bronchitis and emphysema).
Compared with California prescribers
Gary Rivas wrote 16 prescriptions for Wixela Inhub, about half as often as the typical California prescriber of it (27). Medicare paid $229.41 per fill, versus $186.48 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with California prescribers
Gary Rivas wrote 15 prescriptions for Carvedilol, about 27% as often as the typical California prescriber of it (56). Medicare paid $7.05 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
Glimepiride is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Gary Rivas wrote 14 prescriptions for Glimepiride, about 35% as often as the typical California prescriber of it (40). Medicare paid $22.51 per fill, versus $9.24 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 combination medication is used to relieve moderate to severe pain.
Compared with California prescribers
Gary Rivas wrote 14 prescriptions for Hydrocodone-Acetaminophen, about 18% as often as the typical California prescriber of it (76). Medicare paid $14.50 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Gary Rivas wrote 14 prescriptions for Metoprolol Tartrate, about 25% as often as the typical California prescriber of it (57). Medicare paid $2.30 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
Latanoprost is used to treat high pressure inside the eye due to glaucoma (open angle type) or other eye diseases (such as ocular hypertension).
Compared with California prescribers
Gary Rivas wrote 13 prescriptions for Latanoprost, about 8% as often as the typical California prescriber of it (159). Medicare paid $17.30 per fill, versus $12.02 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
Sildenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED).
Compared with California prescribers
Gary Rivas wrote 13 prescriptions for Sildenafil Citrate, about half as often as the typical California prescriber of it (25). Medicare paid $5.61 per fill, versus $38.41 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
Gary Rivas wrote 13 prescriptions for Zolpidem Tartrate, about 29% as often as the typical California prescriber of it (45). Medicare paid $5.03 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
Alprazolam is used to treat anxiety and panic disorders.
Compared with California prescribers
Gary Rivas wrote 12 prescriptions for Alprazolam, about 24% as often as the typical California prescriber of it (50). Medicare paid $1.46 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
Cilostazol is used to improve the symptoms of a certain blood flow problem in the legs (intermittent claudication).
Compared with California prescribers
Gary Rivas wrote 12 prescriptions for Cilostazol, about half as often as the typical California prescriber of it (27). Medicare paid $31.67 per fill, versus $19.81 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
Hydralazine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Gary Rivas wrote 12 prescriptions for Hydralazine Hcl, about 28% as often as the typical California prescriber of it (43). Medicare paid $22.01 per fill, versus $14.35 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
See also Warning section.
Compared with California prescribers
Gary Rivas wrote 12 prescriptions for Loperamide, about half as often as the typical California prescriber of it (23). Medicare paid $7.46 per fill, versus $15.35 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
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
Gary Rivas wrote 12 prescriptions for Lovastatin, about 40% as often as the typical California prescriber of it (30). Medicare paid $8.75 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.
Compared with California prescribers
Gary Rivas wrote 12 prescriptions for Nano 2nd Gen Pen Needle, about 36% as often as the typical California prescriber of it (33). Medicare paid $88.98 per fill, versus $66.35 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
Dicyclomine is used to treat a certain type of intestinal problem called irritable bowel syndrome.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Dicyclomine Hcl, about 41% as often as the typical California prescriber of it (27). Medicare paid $52.69 per fill, versus $17.05 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
Felodipine is used to treat high blood pressure (hypertension).
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Felodipine Er, about half as often as the typical California prescriber of it (23). Medicare paid $25.31 per fill, versus $31.59 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
Empagliflozin is used with a proper diet and exercise program to control high blood sugar in people with type 2 diabetes.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Jardiance, about 19% as often as the typical California prescriber of it (58). Medicare paid $1,651.97 per fill, versus $933.82 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 alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Ondansetron Hcl, about 40% as often as the typical California prescriber of it (28). Medicare paid $62.00 per fill, versus $14.67 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
Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Prednisone, about 27% as often as the typical California prescriber of it (40). Medicare paid $3.52 per fill, versus $5.64 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
This medication is a beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Propranolol Hcl, about half as often as the typical California prescriber of it (25). Medicare paid $16.68 per fill, versus $20.69 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
Icosapent ethyl is used along with certain other cholesterol medications ("statins" such as atorvastatin, simvastatin) to reduce the risk of heart attack, stroke, and certain types of heart problems that require treatment in a hospital.
Compared with California prescribers
Gary Rivas wrote 11 prescriptions for Vascepa, about 14% as often as the typical California prescriber of it (81). Medicare paid $87.08 per fill, versus $410.11 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Gary Rivas’s prescriptions
What does Gary Rivas prescribe most?
In 2024 Medicare Part D data, Gary Rivas's most prescribed medications were Atorvastatin Calcium (289), Metformin Hcl (134) and Amlodipine Besylate (124).
How does Gary Rivas's prescribing compare with other California prescribers?
Of the 80 medications with a state comparison, Gary Rivas prescribes 8 more often than the typical California prescriber, 20 about as often and 52 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Gary Rivas 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.
