SHIRIN HEYDARI PA
Prescription History 1356977607
Physician Assistant in Fullerton, CA

Active since March 18, 2020PECOS EnrolledAccepts Medicare Assignment
100 E VALENCIA MESA DR STE 310, FULLERTON, CA 92835(714) 734-3120 Get Directions

NPPES record last updated: November 8, 2021. Verified against the NPPES registry weekly; last sync: October 11, 2026.

Record update history: Nov 8, 2021, Nov 3, 2021, Aug 6, 2020 and 1 more (4 updates tracked since 2020).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for SHIRIN HEYDARI PA, an active Physician Assistant specialist practicing in Fullerton, CA. Our medical registry currently tracks 10 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 351 documented patient claims. Among these therapy options, the most frequently utilized medication is Gabapentin, which accounts for 78 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

10
Medications
351
Total Claims
397
30-Day Fills
Gabapentin
Most Prescribed · 78 claims
View details
10 medications · 2024 Medicare Part D
Medicare Part D medications prescribed by SHIRIN HEYDARI PA in 2024, with prescription volumes, average cost per fill, and CA state comparisons
Medication Prescriptions (2024)Rx (2024) Avg Cost per FillCost / Fill Vs. Other CA PrescribersVs. CA Avg

About Gabapentin: Gabapentin is used with other medications to prevent and control seizures. Show more ▾

It is also used to relieve nerve pain following shingles (a painful rash due to herpes zoster infection) in adults. Gabapentin is known as an anticonvulsant or antiepileptic drug. A cyclohexane-gamma-aminobutyric acid derivative that is used for the treatment of PARTIAL SEIZURES; NEURALGIA; and RESTLESS LEGS SYNDROME.

In 2024, this provider wrote 78 Medicare prescriptions for Gabapentin, about the same volume as the typical California prescriber of this medication (80.2). Medicare paid an average of $10.07 per fill, versus $15.63 statewide.

How often this provider prescribes it

This provider
78
CA average
80.2

This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$10.07
CA average
$15.63

This provider's average cost per fill is below the CA average for this medication.

122
30-Day Fills
standardized to 30-day supplies
3,615
Days of Medication
total across all patients in 2024

About Methocarbamol: Methocarbamol is used to treat muscle spasms/pain. Show more ▾

It is usually used along with rest, physical therapy, and other treatment. It works by helping to relax the muscles. A centrally acting muscle relaxant whose mode of action has not been established. It is used as an adjunct in the symptomatic treatment of musculoskeletal conditions associated with painful muscle spasm. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1206)

In 2024, this provider wrote 62 Medicare prescriptions for Methocarbamol, about 2.3 times the volume of the typical California prescriber of this medication (27.3). Medicare paid an average of $4.21 per fill, versus $10.93 statewide.

How often this provider prescribes it

This provider
62
CA average
27.3

This provider prescribes this medication more often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$4.21
CA average
$10.93

This provider's average cost per fill is below the CA average for this medication.

62
30-Day Fills
standardized to 30-day supplies
495
Days of Medication
total across all patients in 2024

About Hydrocodone-Acetaminophen: This combination medication is used to relieve moderate to severe pain. Show more ▾

It contains an opioid pain reliever (hydrocodone) and a non-opioid pain reliever (acetaminophen). Hydrocodone works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever.

In 2024, this provider wrote 57 Medicare prescriptions for Hydrocodone-Acetaminophen, about 75% of the volume of the typical California prescriber of this medication (76.2). Medicare paid an average of $5.83 per fill, versus $21.39 statewide.

How often this provider prescribes it

This provider
57
CA average
76.2

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.83
CA average
$21.39

This provider's average cost per fill is below the CA average for this medication.

57
30-Day Fills
standardized to 30-day supplies
305
Days of Medication
total across all patients in 2024

About Celecoxib: This medication is a nonsteroidal anti-inflammatory drug (NSAID), specifically a COX-2 inhibitor, which relieves pain and swelling (inflammation). Show more ▾

It is used to treat arthritis, acute pain, and menstrual pain and discomfort. The pain and swelling relief provided by this medication helps you perform more of your normal daily activities. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section. This drug works by blocking the enzyme in your body that makes prostaglandins. Decreasing prostaglandins helps to reduce pain and swelling. A pyrazole derivative and selective CYCLOOXYGENASE 2 INHIBITOR that is used to treat symptoms associated with RHEUMATOID ARTHRITIS; OSTEOARTHRITIS and JUVENILE ARTHRITIS, as well as the management of ACUTE PAIN.

In 2024, this provider wrote 54 Medicare prescriptions for Celecoxib, about 1.2 times the volume of the typical California prescriber of this medication (45.9). Medicare paid an average of $8.03 per fill, versus $32.27 statewide.

How often this provider prescribes it

This provider
54
CA average
45.9

This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$8.03
CA average
$32.27

This provider's average cost per fill is below the CA average for this medication.

54
30-Day Fills
standardized to 30-day supplies
355
Days of Medication
total across all patients in 2024

About Methylprednisolone: 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. Show more ▾

It decreases your immune system's response to various diseases to reduce symptoms such as swelling, pain, and allergic-type reactions. This medication is a corticosteroid hormone. Methylprednisolone may also be used with other medications in hormone disorders. A PREDNISOLONE derivative with similar anti-inflammatory action.

In 2024, this provider wrote 34 Medicare prescriptions for Methylprednisolone, about the same volume as the typical California prescriber of this medication (30.2). Medicare paid an average of $7.71 per fill, versus $6.84 statewide.

How often this provider prescribes it

This provider
34
CA average
30.2

This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$7.71
CA average
$6.84

Gross Part D cost per fill; not the patient's out-of-pocket price.

34
30-Day Fills
standardized to 30-day supplies
204
Days of Medication
total across all patients in 2024

About Sulfamethoxazole-Trimethoprim: This medication is a combination of two antibiotics: sulfamethoxazole and trimethoprim. Show more ▾

It is used to treat a wide variety of bacterial infections (such as middle ear, urine, respiratory, and intestinal infections). It is also used to prevent and treat a certain type of pneumonia (pneumocystis-type). This medication should not be used by children less than 2 months of age due to the risk of serious side effects. This medication treats only certain types of infections. It will not work for viral infections (such as flu). Unnecessary use or misuse of any antibiotic can lead to its decreased effectiveness.

In 2024, this provider wrote 18 Medicare prescriptions for Sulfamethoxazole-Trimethoprim, about 71% of the volume of the typical California prescriber of this medication (25.4). Medicare paid an average of $1.07 per fill, versus $4.62 statewide.

How often this provider prescribes it

This provider
18
CA average
25.4

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$1.07
CA average
$4.62

This provider's average cost per fill is below the CA average for this medication.

18
30-Day Fills
standardized to 30-day supplies
52
Days of Medication
total across all patients in 2024

About Oxycodone Hcl: This medication is used to help relieve moderate to severe pain. Show more ▾

Oxycodone belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. A semisynthetic derivative of CODEINE.

In 2024, this provider wrote 14 Medicare prescriptions for Oxycodone Hcl, about a third of the volume of the typical California prescriber of this medication (43.4). Medicare paid an average of $5.60 per fill, versus $16.05 statewide.

How often this provider prescribes it

This provider
14
CA average
43.4

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$5.60
CA average
$16.05

This provider's average cost per fill is below the CA average for this medication.

14
30-Day Fills
standardized to 30-day supplies
74
Days of Medication
total across all patients in 2024

About Tramadol Hcl: See also Warning section. Show more ▾

This medication is used to help relieve moderate to moderately severe pain. Tramadol belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. A narcotic analgesic proposed for severe pain. It may be habituating.

In 2024, this provider wrote 12 Medicare prescriptions for Tramadol Hcl, about a quarter of the volume of the typical California prescriber of this medication (43.7). Medicare paid an average of $2.57 per fill, versus $6.24 statewide.

How often this provider prescribes it

This provider
12
CA average
43.7

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$2.57
CA average
$6.24

This provider's average cost per fill is below the CA average for this medication.

12
30-Day Fills
standardized to 30-day supplies
71
Days of Medication
total across all patients in 2024

About Dexamethasone: 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. Show more ▾

It is also used as a test for an adrenal gland disorder (Cushing's syndrome). Dexamethasone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions. An anti-inflammatory 9-fluoro-glucocorticoid.

In 2024, this provider wrote 11 Medicare prescriptions for Dexamethasone, about a third of the volume of the typical California prescriber of this medication (35.2). Medicare paid an average of $7.56 per fill, versus $13.93 statewide.

How often this provider prescribes it

This provider
11
CA average
35.2

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$7.56
CA average
$13.93

This provider's average cost per fill is below the CA average for this medication.

11
30-Day Fills
standardized to 30-day supplies
77
Days of Medication
total across all patients in 2024

About Tizanidine Hcl: This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury). Show more ▾

It works by helping to relax the muscles.

In 2024, this provider wrote 11 Medicare prescriptions for Tizanidine Hcl, about a third of the volume of the typical California prescriber of this medication (37.4). Medicare paid an average of $6.02 per fill, versus $11.76 statewide.

How often this provider prescribes it

This provider
11
CA average
37.4

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$6.02
CA average
$11.76

This provider's average cost per fill is below the CA average for this medication.

13
30-Day Fills
standardized to 30-day supplies
192
Days of Medication
total across all patients in 2024
No medications match the current filters.
= the 5 medications this provider prescribes most.▲ More than typical≈ Typical▼ Less than typical= prescription volume vs the average CA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the CA average cost per fill.

About this data. The prescription history for SHIRIN HEYDARI PA is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2024, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Physician Assistant prescribing approach at this Fullerton, CA practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average among CA prescribers of the same medication and form, shown only when at least five prescribers contribute. Always confirm current medications and costs directly with the provider and your plan.

About the medication summaries. Drug use descriptions come from the CMS Medicare Part D Drug Spending Dashboard (2024), and substance definitions from Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine. They are summaries that do not contain all possible information about a medication and are not individual medical advice. Ask a health care professional about any medication and your specific health needs.