Gary Terzian, PA-C
NPI 1174972897 · Physician Assistant · Chatsworth, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Terzian, PA-C is a Physician Assistant provider in Chatsworth, CA (NPI 1174972897).
Provider details
- NPI number
- 1174972897
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 53457 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 21 | 21 |
| Naproxen | 15 | 15 |
| Diclofenac Sodium | 14 | 12 |
| Triamcinolone Acetonide | 14 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 12 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 5900 W Olympic BlvdLos Angeles, CA 90036-4671Phone: (310) 657-5900
Registry dates
- Enumerated
- 2016-06-03
- Last updated
- 2025-10-29
- Certified
- 2025-10-29
Frequently asked questions
- What is Gary Terzian's NPI number?
- Gary Terzian's National Provider Identifier (NPI) is 1174972897, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Terzian's specialty?
- Gary Terzian is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gary Terzian located?
- Gary Terzian's practice location on file with NPPES is 9301 Oakdale Ave Ste 200, Chatsworth, CA 91311-6538.
- What is Gary Terzian's phone number?
- The practice phone number listed in the NPPES registry for Gary Terzian is (310) 354-4200.
- Does Gary Terzian accept Medicare?
- Gary Terzian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Terzian's NPI active?
- Yes — Gary Terzian's NPI (1174972897) is active in the NPPES registry as of the last update on 2025-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.