Stephanie Yan, MD
NPI 1013379841 · Gastroenterology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Yan, MD is a Gastroenterology Physician provider in Oakland, CA (NPI 1013379841).
Provider details
- NPI number
- 1013379841
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A151560 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 72 | 44 |
| Omeprazole | 60 | 27 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 35 | 35 |
| Famotidine | 24 | 14 |
| Carvedilol | 12 | — |
| Rifaximinbrand: Xifaxan | 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 , 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
- 2016-03-22
- Last updated
- 2022-09-14
- Certified
- 2022-09-13
Frequently asked questions
- What is Stephanie Yan's NPI number?
- Stephanie Yan's National Provider Identifier (NPI) is 1013379841, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Yan's specialty?
- Stephanie Yan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Yan located?
- Stephanie Yan's practice location on file with NPPES is 275 W Macarthur Blvd, Oakland, CA 94611-5641.
- What is Stephanie Yan's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Yan is (916) 973-6961.
- Does Stephanie Yan accept Medicare?
- Stephanie Yan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Yan's NPI active?
- Yes — Stephanie Yan's NPI (1013379841) is active in the NPPES registry as of the last update on 2022-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.