DR. NINA CHAN M.D.
Prescription History 1205195021
Family Medicine in Upland, CA
What does Dr. Chan prescribe?
In 2024, Dr. Chan wrote 2,072 Medicare prescriptions for 57 medications. The most prescribed was Atorvastatin Calcium, with 179 prescriptions for 68 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. Chan prescribes.
Medications 57 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. Chan wrote 179 prescriptions for Atorvastatin Calcium, about 88% as often as the typical California prescriber of it (202). Medicare paid $11.26 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Chan wrote 135 prescriptions for Amlodipine Besylate, about as often as the typical California prescriber of it (141). Medicare paid $7.05 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
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. Chan wrote 108 prescriptions for Metformin Hcl, about as often as the typical California prescriber of it (100). Medicare paid $9.26 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
Lisinopril is used to treat high blood pressure.
Compared with California prescribers
Dr. Chan wrote 103 prescriptions for Lisinopril, about as often as the typical California prescriber of it (98). Medicare paid $9.28 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
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. Chan wrote 102 prescriptions for Losartan Potassium, about 84% as often as the typical California prescriber of it (121). Medicare paid $12.06 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with California prescribers
Dr. Chan wrote 89 prescriptions for Levothyroxine Sodium, about 71% as often as the typical California prescriber of it (125). Medicare paid $12.87 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
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with California prescribers
Dr. Chan wrote 76 prescriptions for Ibuprofen, about 1.8 times as often as the typical California prescriber of it (42). Medicare paid $10.44 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
Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers).
Compared with California prescribers
Dr. Chan wrote 64 prescriptions for Omeprazole, about 82% as often as the typical California prescriber of it (78). Medicare paid $16.93 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
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. Chan wrote 60 prescriptions for Fluticasone Propionate, about 1.2 times as often as the typical California prescriber of it (50). Medicare paid $11.64 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
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. Chan wrote 58 prescriptions for Simvastatin, about as often as the typical California prescriber of it (63). Medicare paid $10.23 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
This medication is used to treat high blood pressure.
Compared with California prescribers
Dr. Chan wrote 57 prescriptions for Hydrochlorothiazide, about as often as the typical California prescriber of it (62). Medicare paid $5.35 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
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. Chan wrote 48 prescriptions for Rosuvastatin Calcium, about half as often as the typical California prescriber of it (101). Medicare paid $20.80 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with California prescribers
Dr. Chan wrote 46 prescriptions for Metoprolol Succinate, about half as often as the typical California prescriber of it (86). Medicare paid $9.38 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
Alendronate is used to prevent and treat certain types of bone loss (osteoporosis) in adults.
Compared with California prescribers
Dr. Chan wrote 43 prescriptions for Alendronate Sodium, about 71% as often as the typical California prescriber of it (61). Medicare paid $12.48 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
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. Chan wrote 39 prescriptions for Albuterol Sulfate Hfa, about 67% as often as the typical California prescriber of it (58). Medicare paid $31.15 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Chan wrote 39 prescriptions for Gabapentin, about half as often as the typical California prescriber of it (80). Medicare paid $22.41 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. Chan wrote 37 prescriptions for Hydrocodone-Acetaminophen, about half as often as the typical California prescriber of it (76). Medicare paid $13.13 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
This medication is used to treat depression.
Compared with California prescribers
Dr. Chan wrote 35 prescriptions for Trazodone Hcl, about 62% as often as the typical California prescriber of it (57). Medicare paid $20.00 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 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. Chan wrote 34 prescriptions for Sertraline Hcl, about 74% as often as the typical California prescriber of it (46). Medicare paid $11.18 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
This medication is used to treat a variety of skin conditions (such as eczema, dermatitis, allergies, rash).
Compared with California prescribers
Dr. Chan wrote 34 prescriptions for Triamcinolone Acetonide, about 80% as often as the typical California prescriber of it (43). Medicare paid $5.68 per fill, versus $10.03 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
Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux).
Compared with California prescribers
Dr. Chan wrote 32 prescriptions for Pantoprazole Sodium, about half as often as the typical California prescriber of it (65). Medicare paid $8.24 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
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. Chan wrote 31 prescriptions for Pravastatin Sodium, about 82% as often as the typical California prescriber of it (38). Medicare paid $7.38 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Chan wrote 28 prescriptions for Metoprolol Tartrate, about half as often as the typical California prescriber of it (57). Medicare paid $4.91 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. Chan wrote 28 prescriptions for Montelukast Sodium, about half as often as the typical California prescriber of it (49). Medicare paid $8.80 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
See also Warning section.
Compared with California prescribers
Dr. Chan wrote 28 prescriptions for Tramadol Hcl, about 64% as often as the typical California prescriber of it (44). Medicare paid $9.66 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
Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH).
Compared with California prescribers
Dr. Chan wrote 26 prescriptions for Tamsulosin Hcl, about 31% as often as the typical California prescriber of it (84). Medicare paid $27.25 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
This medication is used to treat depression.
Compared with California prescribers
Dr. Chan wrote 24 prescriptions for Amitriptyline Hcl, about as often as the typical California prescriber of it (25). Medicare paid $5.47 per fill, versus $14.34 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. Chan wrote 24 prescriptions for Tizanidine Hcl, about 64% as often as the typical California prescriber of it (37). Medicare paid $2.27 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
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. Chan wrote 23 prescriptions for Glipizide, about half as often as the typical California prescriber of it (49). Medicare paid $9.24 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
Allopurinol is used to treat gout and certain types of kidney stones.
Compared with California prescribers
Dr. Chan wrote 21 prescriptions for Allopurinol, about half as often as the typical California prescriber of it (44). Medicare paid $7.41 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
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Chan wrote 21 prescriptions for Atenolol, about half as often as the typical California prescriber of it (50). Medicare paid $8.11 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
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. Chan wrote 21 prescriptions for Furosemide, about 33% as often as the typical California prescriber of it (64). Medicare paid $6.26 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
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. Chan wrote 21 prescriptions for Ozempic, about 37% as often as the typical California prescriber of it (56). Medicare paid $907.46 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
Alprazolam is used to treat anxiety and panic disorders.
Compared with California prescribers
Dr. Chan wrote 20 prescriptions for Alprazolam, about 40% as often as the typical California prescriber of it (50). Medicare paid $1.68 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
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. Chan wrote 20 prescriptions for Azelastine Hcl, about half as often as the typical California prescriber of it (47). Medicare paid $14.63 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
Olmesartan is used to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Chan wrote 20 prescriptions for Olmesartan Medoxomil, about 42% as often as the typical California prescriber of it (48). Medicare paid $13.61 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
Vitamin D (ergocalciferol-D2, cholecalciferol-D3, alfacalcidol) is a fat-soluble vitamin that helps your body absorb calcium and phosphorus.
Compared with California prescribers
Dr. Chan wrote 20 prescriptions for Vitamin D2, about 68% as often as the typical California prescriber of it (30). Medicare paid $14.84 per fill, versus $8.59 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
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. Chan wrote 19 prescriptions for Eliquis, about 26% as often as the typical California prescriber of it (73). Medicare paid $860.52 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
Meclizine is an antihistamine that is used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness.
Compared with California prescribers
Dr. Chan wrote 18 prescriptions for Meclizine Hcl, about half as often as the typical California prescriber of it (37). Medicare paid $5.82 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
See also Warning section.
Compared with California prescribers
Dr. Chan wrote 16 prescriptions for Diclofenac Sodium, about 34% as often as the typical California prescriber of it (47). Medicare paid $19.42 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
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. Chan wrote 16 prescriptions for Warfarin Sodium, about 40% as often as the typical California prescriber of it (40). Medicare paid $4.12 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 high blood pressure.
Compared with California prescribers
Dr. Chan wrote 15 prescriptions for Lisinopril-Hydrochlorothiazide, about 38% as often as the typical California prescriber of it (39). Medicare paid $11.90 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 medication is used to treat anxiety.
Compared with California prescribers
Dr. Chan wrote 15 prescriptions for Lorazepam, about 35% as often as the typical California prescriber of it (43). Medicare paid $3.68 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 drug is used to treat high blood pressure.
Compared with California prescribers
Dr. Chan wrote 15 prescriptions for Losartan-Hydrochlorothiazide, about 38% as often as the typical California prescriber of it (39). Medicare paid $15.42 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
See also Warning section.
Compared with California prescribers
Dr. Chan wrote 15 prescriptions for Naproxen, about half as often as the typical California prescriber of it (29). Medicare paid $10.93 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.
Compared with California prescribers
Dr. Chan wrote 14 prescriptions for Nano 2nd Gen Pen Needle, about half as often as the typical California prescriber of it (33). Medicare paid $148.44 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
Hydralazine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Chan wrote 13 prescriptions for Hydralazine Hcl, about 30% as often as the typical California prescriber of it (43). Medicare paid $23.61 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
Insulin glargine is used with a proper diet and exercise program to control high blood sugar in people with diabetes.
Compared with California prescribers
Dr. Chan wrote 13 prescriptions for Lantus Solostar, about 36% as often as the typical California prescriber of it (36). Medicare paid $155.03 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 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
Dr. Chan wrote 13 prescriptions for Ondansetron Odt, about half as often as the typical California prescriber of it (25). Medicare paid $1.75 per fill, versus $13.40 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. Chan wrote 13 prescriptions for Zolpidem Tartrate, about 29% as often as the typical California prescriber of it (45). Medicare paid $0.74 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
Cyclobenzaprine is used short-term to treat muscle spasms.
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Cyclobenzaprine Hcl, about 37% as often as the typical California prescriber of it (32). Medicare paid $3.80 per fill, versus $8.89 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
Donepezil is used to treat confusion (dementia) related to Alzheimer's disease.
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Donepezil Hcl, about 21% as often as the typical California prescriber of it (58). Medicare paid $10.39 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 used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Escitalopram Oxalate, about 25% as often as the typical California prescriber of it (48). Medicare paid $11.73 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, panic attacks, obsessive compulsive disorder).
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Fluoxetine Hcl, about 36% as often as the typical California prescriber of it (33). Medicare paid $5.94 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 medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim.
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Sulfamethoxazole-Trimethoprim, about half as often as the typical California prescriber of it (25). Medicare paid $1.79 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
Rivaroxaban is used to prevent blood clots from forming due to a certain irregular heartbeat (atrial fibrillation) or after hip or knee replacement surgery.
Compared with California prescribers
Dr. Chan wrote 12 prescriptions for Xarelto, about 28% as often as the typical California prescriber of it (43). Medicare paid $747.12 per fill, versus $952.66 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
This medication is used to treat fungal infections of the fingernails and toenails.
Compared with California prescribers
Dr. Chan wrote 11 prescriptions for Ciclopirox, about 35% as often as the typical California prescriber of it (32). Medicare paid $6.82 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.
Questions about Dr. Chan’s prescriptions
What does Dr. Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed medications were Atorvastatin Calcium (179), Amlodipine Besylate (135) and Metformin Hcl (108).
How does Dr. Chan's prescribing compare with other California prescribers?
Of the 57 medications with a state comparison, Dr. Chan prescribes 1 more often than the typical California prescriber, 12 about as often and 44 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Chan 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.
