Oliver Lin, M.D.
NPI 1497981575 · Gastroenterology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oliver Lin, M.D. is a Gastroenterology Physician provider in Walnut Creek, CA (NPI 1497981575).
Provider details
- NPI number
- 1497981575
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A113263 (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
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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 182 | 173 |
| Omeprazole | 32 | 27 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 19 | 19 |
| Pantoprazole Sodium | 14 | — |
| Lactulose | 13 | — |
| Mesalamine | 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
- 2009-06-03
- Last updated
- 2021-12-17
Frequently asked questions
- What is Oliver Lin's NPI number?
- Oliver Lin's National Provider Identifier (NPI) is 1497981575, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oliver Lin's specialty?
- Oliver Lin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Oliver Lin located?
- Oliver Lin's practice location on file with NPPES is 1425 S Main St, Walnut Creek, CA 94596-5318.
- What is Oliver Lin's phone number?
- The practice phone number listed in the NPPES registry for Oliver Lin is (925) 295-4080.
- Does Oliver Lin accept Medicare?
- Oliver Lin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oliver Lin's NPI active?
- Yes — Oliver Lin's NPI (1497981575) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.