Joanne Lin, DO
NPI 1861029357 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanne Lin, DO is a Gastroenterology Physician provider in San Francisco, CA (NPI 1861029357).
Provider details
- NPI number
- 1861029357
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A20535 (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
6 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Spironolactone | 36 |
| Carvedilol | 35 |
| Ursodiol | 29 |
| Furosemide | 26 |
| Tacrolimus | 16 |
| Entecavir | 14 |
| Tenofovir Alafenamidebrand: Vemlidy | 13 |
| Tenofovir Disoproxil Fumarate | 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
Registry dates
- Enumerated
- 2020-03-24
- Last updated
- 2026-02-20
- Certified
- 2026-02-20
Frequently asked questions
- What is Joanne Lin's NPI number?
- Joanne Lin's National Provider Identifier (NPI) is 1861029357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanne Lin's specialty?
- Joanne Lin is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Joanne Lin located?
- Joanne Lin's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Joanne Lin's phone number?
- The practice phone number listed in the NPPES registry for Joanne Lin is (415) 519-6130.
- Does Joanne Lin accept Medicare?
- Joanne Lin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanne Lin's NPI active?
- Yes — Joanne Lin's NPI (1861029357) is active in the NPPES registry as of the last update on 2026-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.