Oliver Tsai, M.D.
NPI 1306828272 · Geriatric Medicine (Internal Medicine) Physician · West Covina, CA
Oliver Tsai, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in West Covina, CA (NPI 1306828272).
Provider details
- NPI number
- 1306828272
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A49033 (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
- 2005-11-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Oliver Tsai's NPI number?
- Oliver Tsai's National Provider Identifier (NPI) is 1306828272, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oliver Tsai's specialty?
- Oliver Tsai is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Oliver Tsai located?
- Oliver Tsai's practice location on file with NPPES is 1433 W Merced Ave, West Covina, CA 91790-3402.
- What is Oliver Tsai's phone number?
- The practice phone number listed in the NPPES registry for Oliver Tsai is (626) 962-3584.
- Is Oliver Tsai's NPI active?
- Yes — Oliver Tsai's NPI (1306828272) 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.