Tian Yan Chen, M.D.
NPI 1528431806 · Specialist · San Francisco, CA
Enrolled with Medicare as Order and Referring Only - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tian Yan Chen, M.D. is a Specialist provider in San Francisco, CA (NPI 1528431806).
Provider details
- NPI number
- 1528431806
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 139077 (CA)
Specialties & taxonomies
Other Service Providers
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-11-09
- Last updated
- 2015-11-09
Frequently asked questions
- What is Tian Yan Chen's NPI number?
- Tian Yan Chen's National Provider Identifier (NPI) is 1528431806, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tian Yan Chen's specialty?
- Tian Yan Chen is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Tian Yan Chen located?
- Tian Yan Chen's practice location on file with NPPES is 357 Medical Sciences, 513 Parnassus Avenue, San Francisco, CA 94143-0538.
- What is Tian Yan Chen's phone number?
- The practice phone number listed in the NPPES registry for Tian Yan Chen is (415) 476-3143.
- Does Tian Yan Chen accept Medicare?
- Tian Yan Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tian Yan Chen's NPI active?
- Yes — Tian Yan Chen's NPI (1528431806) is active in the NPPES registry as of the last update on 2015-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.