James K. Yan, D.O., Medical Office Inc.
NPI 1609032283 · Gastroenterology Physician · San Francisco, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James K. Yan, D.O., Medical Office Inc. is a Gastroenterology Physician organization in San Francisco, CA (NPI 1609032283).
Provider details
- NPI number
- 1609032283
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- James Yan, Physician/Ceo(415) 781-1818
- License
- 20A6238 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-02
- Last updated
- 2008-08-02
Frequently asked questions
- What is James K. Yan, D.O., Medical Office Inc.'s NPI number?
- James K. Yan, D.O., Medical Office Inc.'s National Provider Identifier (NPI) is 1609032283, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is James K. Yan, D.O., Medical Office Inc.?
- James K. Yan, D.O., Medical Office Inc. is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James K. Yan, D.O., Medical Office Inc. located?
- James K. Yan, D.O., Medical Office Inc.'s practice location on file with NPPES is 728 Pacific Ave, San Francisco, CA 94133-4457.
- What is James K. Yan, D.O., Medical Office Inc.'s phone number?
- The practice phone number listed in the NPPES registry for James K. Yan, D.O., Medical Office Inc. is (415) 781-1818.
- Does James K. Yan, D.O., Medical Office Inc. accept Medicare?
- James K. Yan, D.O., Medical Office Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for James K. Yan, D.O., Medical Office Inc.?
- The authorized official listed on James K. Yan, D.O., Medical Office Inc.'s NPPES record is James Yan, Physician/Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is James K. Yan, D.O., Medical Office Inc.'s NPI active?
- Yes — James K. Yan, D.O., Medical Office Inc.'s NPI (1609032283) is active in the NPPES registry as of the last update on 2008-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.