SHIRIN HEYDARI PA
Prescription History 1356977607
Physician Assistant in Fullerton, CA
What does Shirin Heydari prescribe?
In 2024, Shirin Heydari wrote 351 Medicare prescriptions for 10 medications. The most prescribed was Gabapentin, with 78 prescriptions for 33 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 Shirin Heydari prescribes.
Medications 10 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Shirin Heydari wrote 78 prescriptions for Gabapentin, about as often as the typical California prescriber of it (80). Medicare paid $10.07 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
Methocarbamol is used to treat muscle spasms/pain.
Compared with California prescribers
Shirin Heydari wrote 62 prescriptions for Methocarbamol, about 2.3 times as often as the typical California prescriber of it (27). Medicare paid $4.21 per fill, versus $10.93 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 combination medication is used to relieve moderate to severe pain.
Compared with California prescribers
Shirin Heydari wrote 57 prescriptions for Hydrocodone-Acetaminophen, about 75% as often as the typical California prescriber of it (76). Medicare paid $5.83 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 a nonsteroidal anti-inflammatory drug (NSAID), specifically a COX-2 inhibitor, which relieves pain and swelling (inflammation).
Compared with California prescribers
Shirin Heydari wrote 54 prescriptions for Celecoxib, about 1.2 times as often as the typical California prescriber of it (46). Medicare paid $8.03 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
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
Shirin Heydari wrote 34 prescriptions for Methylprednisolone, about as often as the typical California prescriber of it (30). Medicare paid $7.71 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
This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim.
Compared with California prescribers
Shirin Heydari wrote 18 prescriptions for Sulfamethoxazole-Trimethoprim, about 71% as often as the typical California prescriber of it (25). Medicare paid $1.07 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
This medication is used to help relieve moderate to severe pain.
Compared with California prescribers
Shirin Heydari wrote 14 prescriptions for Oxycodone Hcl, about 32% as often as the typical California prescriber of it (43). Medicare paid $5.60 per fill, versus $16.05 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
See also Warning section.
Compared with California prescribers
Shirin Heydari wrote 12 prescriptions for Tramadol Hcl, about 27% as often as the typical California prescriber of it (44). Medicare paid $2.57 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
Dexamethasone is used to treat conditions such as arthritis, blood/hormone disorders, allergic reactions, skin diseases, eye problems, breathing problems, bowel disorders, cancer, and immune system disorders.
Compared with California prescribers
Shirin Heydari wrote 11 prescriptions for Dexamethasone, about 31% as often as the typical California prescriber of it (35). Medicare paid $7.56 per fill, versus $13.93 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 muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury).
Compared with California prescribers
Shirin Heydari wrote 11 prescriptions for Tizanidine Hcl, about 29% as often as the typical California prescriber of it (37). Medicare paid $6.02 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.
Questions about Shirin Heydari’s prescriptions
What does Shirin Heydari prescribe most?
In 2024 Medicare Part D data, Shirin Heydari's most prescribed medications were Gabapentin (78), Methocarbamol (62) and Hydrocodone-Acetaminophen (57).
How does Shirin Heydari's prescribing compare with other California prescribers?
Of the 10 medications with a state comparison, Shirin Heydari prescribes 1 more often than the typical California prescriber, 3 about as often and 6 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Shirin Heydari 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.
