DR. ALLAN STEVEN MARKS M.D.
Prescription History 1285762021
Pediatrics in San Francisco, CA
What does Dr. Marks prescribe?
In 2024, Dr. Marks wrote 745 Medicare prescriptions for 32 medications. The most prescribed was Lisinopril, with 68 prescriptions for 21 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. Marks prescribes.
Medications 32 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
Lisinopril is used to treat high blood pressure.
Compared with California prescribers
Dr. Marks wrote 68 prescriptions for Lisinopril, about 70% as often as the typical California prescriber of it (98). Medicare paid $5.59 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
Amlodipine is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Marks wrote 55 prescriptions for Amlodipine Besylate, about 39% as often as the typical California prescriber of it (141). Medicare paid $5.37 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with California prescribers
Dr. Marks wrote 45 prescriptions for Levothyroxine Sodium, about 36% as often as the typical California prescriber of it (125). Medicare paid $10.01 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
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. Marks wrote 45 prescriptions for Mounjaro, about as often as the typical California prescriber of it (45). Medicare paid $1,063.90 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
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. Marks wrote 39 prescriptions for Albuterol Sulfate Hfa, about 67% as often as the typical California prescriber of it (58). Medicare paid $31.52 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
Amoxicillin is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Marks wrote 28 prescriptions for Amoxicillin, about 73% as often as the typical California prescriber of it (38). Medicare paid $4.49 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
Sumatriptan is used to treat migraines.
Compared with California prescribers
Dr. Marks wrote 28 prescriptions for Sumatriptan Succinate, about 1.2 times as often as the typical California prescriber of it (24). Medicare paid $11.32 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 high blood pressure.
Compared with California prescribers
Dr. Marks wrote 27 prescriptions for Hydrochlorothiazide, about half as often as the typical California prescriber of it (62). Medicare paid $4.02 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
This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure.
Compared with California prescribers
Dr. Marks wrote 27 prescriptions for Metoprolol Succinate, about 31% as often as the typical California prescriber of it (86). Medicare paid $12.65 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Marks wrote 26 prescriptions for Gabapentin, about 32% as often as the typical California prescriber of it (80). Medicare paid $70.98 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
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. Marks wrote 26 prescriptions for Metformin Hcl, about 26% as often as the typical California prescriber of it (100). Medicare paid $4.05 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
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. Marks wrote 25 prescriptions for Sertraline Hcl, about half as often as the typical California prescriber of it (46). Medicare paid $6.74 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
Metoprolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Marks wrote 22 prescriptions for Metoprolol Tartrate, about 39% as often as the typical California prescriber of it (57). Medicare paid $5.01 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
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. Marks wrote 21 prescriptions for Atorvastatin Calcium, about 10% as often as the typical California prescriber of it (202). Medicare paid $6.23 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
Cefdinir is used to treat a wide variety of bacterial infections.
Compared with California prescribers
Dr. Marks wrote 21 prescriptions for Cefdinir, about 80% as often as the typical California prescriber of it (26). Medicare paid $17.06 per fill, versus $14.00 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
Ipratropium is used to treat a runny nose caused by the common cold or seasonal allergies.
Compared with California prescribers
Dr. Marks wrote 20 prescriptions for Ipratropium Bromide, about half as often as the typical California prescriber of it (35). Medicare paid $29.26 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
This medication is used to treat a wide variety of bacterial infections, including those that cause acne.
Compared with California prescribers
Dr. Marks wrote 18 prescriptions for Doxycycline Hyclate, about 62% as often as the typical California prescriber of it (29). Medicare paid $17.83 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 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
Dr. Marks wrote 18 prescriptions for Fluticasone-Salmeterol, about 76% as often as the typical California prescriber of it (24). Medicare paid $136.99 per fill, versus $155.85 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
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. Marks wrote 17 prescriptions for Clopidogrel, about 35% as often as the typical California prescriber of it (48). Medicare paid $13.43 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
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with California prescribers
Dr. Marks wrote 17 prescriptions for Fluoxetine Hcl, about half as often as the typical California prescriber of it (33). Medicare paid $9.92 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 used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Dr. Marks wrote 16 prescriptions for Duloxetine Hcl, about 40% as often as the typical California prescriber of it (40). Medicare paid $19.85 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
Montelukast is used to control and prevent symptoms caused by asthma (such as wheezing and shortness of breath).
Compared with California prescribers
Dr. Marks wrote 15 prescriptions for Montelukast Sodium, about 31% as often as the typical California prescriber of it (49). Medicare paid $16.64 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
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
Dr. Marks wrote 14 prescriptions for Prednisone, about 35% as often as the typical California prescriber of it (40). Medicare paid $22.15 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
Atenolol is used with or without other medications to treat high blood pressure (hypertension).
Compared with California prescribers
Dr. Marks wrote 13 prescriptions for Atenolol, about 26% as often as the typical California prescriber of it (50). Medicare paid $4.56 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 anxiety.
Compared with California prescribers
Dr. Marks wrote 13 prescriptions for Buspirone Hcl, about 35% as often as the typical California prescriber of it (37). Medicare paid $29.21 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
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. Marks wrote 13 prescriptions for Eliquis, about 18% as often as the typical California prescriber of it (73). Medicare paid $1,633.76 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
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. Marks wrote 12 prescriptions for Ozempic, about 21% as often as the typical California prescriber of it (56). Medicare paid $945.25 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
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. Marks wrote 12 prescriptions for Pravastatin Sodium, about 32% as often as the typical California prescriber of it (38). Medicare paid $6.10 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
Carvedilol is used to treat high blood pressure and heart failure.
Compared with California prescribers
Dr. Marks wrote 11 prescriptions for Carvedilol, about 19% as often as the typical California prescriber of it (56). Medicare paid $3.11 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
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. Marks wrote 11 prescriptions for Lantus Solostar, about 30% as often as the typical California prescriber of it (36). Medicare paid $224.39 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
Meloxicam is used to treat arthritis.
Compared with California prescribers
Dr. Marks wrote 11 prescriptions for Meloxicam, about 22% as often as the typical California prescriber of it (50). Medicare paid $5.08 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
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. Marks wrote 11 prescriptions for Simvastatin, about 17% as often as the typical California prescriber of it (63). Medicare paid $6.52 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.
Questions about Dr. Marks’s prescriptions
What does Dr. Marks prescribe most?
In 2024 Medicare Part D data, Dr. Marks's most prescribed medications were Lisinopril (68), Amlodipine Besylate (55) and Levothyroxine Sodium (45).
How does Dr. Marks's prescribing compare with other California prescribers?
Of the 32 medications with a state comparison, Dr. Marks prescribes 4 about as often than the typical California prescriber and 28 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Marks 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.
