Gary Terzian, PA-C
Physician Assistant · Chatsworth, CA
Gary Terzian, PA-C is a physician assistant with a practice address in Chatsworth, California, and NPI 1174972897, issued on Jun 3, 2016. Check the license (California 53457, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gary Terzian
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 53457 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9301 Oakdale Ave Ste 200, Chatsworth, CA 91311
- Phone
- (310) 354-4200
- Enumerated
- Jun 3, 2016
- Record last updated
- Oct 29, 2025
- Medicare enrollment
- Enrolled (PECOS I20160629003078); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 9301 Oakdale Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Salazar, NPNurse Practitioner1083236798
- Maria Jesusa Tan, FNPFamily Nurse Practitioner1770098527
Verify Gary Terzian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 53457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average physician assistant in 2024
230 Medicare Part D claims for 165 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Gabapentin21 claims
- Naproxen15 claims
- Diclofenac Sodium14 claims
- Triamcinolone Acetonide14 claims
- Albuterol Sulfate Hfa12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Healthcare Partners Affiliates Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Terzian among 14,451 physician assistant records in California
Gary Terzian, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 44% of them.
- NPI issued2016 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2016 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 physician assistant records list a practice address in Chatsworth
They are 7 of the 498 NPPES records with a practice address in Chatsworth, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Chatsworth → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Judith Daniels, PA-CChatsworth, CA 913111396081055
- Nasim KamyarChatsworth, CA 913111114724846
- Levon Maghakyan, PAChatsworth, CA 913111588258008
- Kaylee NguyenChatsworth, CA 913111184560146
- Christine TurnerChatsworth, CA 913111619011194
- Mihai Zaiat, RCPChatsworth, CA 913111447874268
- Armita AminiWest Hills, CA 913071174125215
- Bahar AttaripourWest Hills, CA 913071083578538
Common questions
What is Gary Terzian, PA-C's NPI number?
Gary Terzian, PA-C's National Provider Identifier (NPI) is 1174972897, issued on Jun 3, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Gary Terzian, PA-C located?
The NPPES record lists a practice address at 9301 Oakdale Ave Ste 200, Chatsworth, CA, 91311. Phone: (310) 354-4200. Providers update this record themselves, so call before visiting.
How can I verify Gary Terzian, PA-C's license?
NPPES lists California license number 53457, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gary Terzian, PA-C prescribe under Medicare Part D?
In 2024, Gary Terzian, PA-C had 230 Medicare Part D claims for 165 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.