Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Oliver C Tsai, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1306828272

Oliver C Tsai, MD is a Geriatric Medicine (Internal Medicine) Physician in West Covina, California. Licensed in California. Registered with an NPI since 2005.

Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1433 W Merced Ave Ste 308
West Covina, CA 91790-3402
Phone: (626) 962-3584
Fax: (626) 962-3261
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence A49033 (CA)

Record details

NPI number1306828272
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 16, 2005
Last updated in NPPESJuly 8, 2007

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