Alfred Tan, M.D.
NPI 1962465955 · Family Medicine Physician · San Ramon, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alfred Tan, M.D. is a Family Medicine Physician provider in San Ramon, CA (NPI 1962465955).
Provider details
- NPI number
- 1962465955
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G48933 (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
20 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
- 2006-04-10
- Last updated
- 2012-05-20
Frequently asked questions
- What is Alfred Tan's NPI number?
- Alfred Tan's National Provider Identifier (NPI) is 1962465955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alfred Tan's specialty?
- Alfred Tan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alfred Tan located?
- Alfred Tan's practice location on file with NPPES is 11030 Bollinger Canyon Rd, San Ramon, CA 94582-4874.
- What is Alfred Tan's phone number?
- The practice phone number listed in the NPPES registry for Alfred Tan is (925) 736-2200.
- Does Alfred Tan accept Medicare?
- Alfred Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alfred Tan's NPI active?
- Yes — Alfred Tan's NPI (1962465955) is active in the NPPES registry as of the last update on 2012-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.