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

Clark S Tsai, MD Inc

Organization Ophthalmology Physician · NPI 1932476991

Clark S Tsai, MD Inc is an Ophthalmology Physician in Oakland, California. Licensed in California. Registered with an NPI since 2011.

Licensed in
CA
In the registry since
2011
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

638 Webster St Ste 358
Oakland, CA 94607-4168
Phone: (925) 864-8886
Fax: (925) 689-7748
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G76192 (CA)

Record details

NPI number1932476991
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Clark Tsai — Ceo/President · (925) 864-8886
NPI enumeratedNovember 18, 2011
Last updated in NPPESDecember 9, 2011
Mailing address2225 Port Chicago Hwy, Concord, CA 94520-2051

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