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Sing Tan, MD
NPI 1447212048 · Internal Medicine Physician · Oakland, CA
Sing Tan, MD is a Internal Medicine Physician provider in Oakland, CA (NPI 1447212048).
Provider details
- NPI number
- 1447212048
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A25140 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
2700 International Blvd
Ste 35
Oakland, CA 94601
Phone: (510) 533-9422
Fax: (510) 533-2414
Street-level locationGet directions
Mailing address
2700 International Blvd
Oakland, CA 94601
Registry dates
- Enumerated
- 2006-04-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sing Tan's NPI number?
- Sing Tan's National Provider Identifier (NPI) is 1447212048, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sing Tan's specialty?
- Sing Tan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sing Tan located?
- Sing Tan's practice location on file with NPPES is 2700 International Blvd, Oakland, CA 94601.
- What is Sing Tan's phone number?
- The practice phone number listed in the NPPES registry for Sing Tan is (510) 533-9422.
- Is Sing Tan's NPI active?
- Yes — Sing Tan's NPI (1447212048) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.