Vartan Tashjian, MD, MS
NPI 1871736314 · General Acute Care Hospital · Fontana, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vartan Tashjian, MD, MS is a General Acute Care Hospital provider in Fontana, CA (NPI 1871736314).
Provider details
- NPI number
- 1871736314
- Entity type
- Individual
- Primary specialty
- General Acute Care HospitalHospitals
- Credential
- MD, MS
- Sex
- Male
- Sole proprietor
- Yes
- License
- A90459 (CA)
Specialties & taxonomies
Hospitals
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Gabapentin | 33 |
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
Registry dates
- Enumerated
- 2009-04-14
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Vartan Tashjian's NPI number?
- Vartan Tashjian's National Provider Identifier (NPI) is 1871736314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vartan Tashjian's specialty?
- Vartan Tashjian is listed in the NPPES registry with a primary specialty of General Acute Care Hospital (Hospitals).
- Where is Vartan Tashjian located?
- Vartan Tashjian's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Vartan Tashjian's phone number?
- The practice phone number listed in the NPPES registry for Vartan Tashjian is (323) 445-8342.
- Does Vartan Tashjian accept Medicare?
- Vartan Tashjian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vartan Tashjian's NPI active?
- Yes — Vartan Tashjian's NPI (1871736314) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.