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 1699944298

Clark S. Tsai, MD, Inc is an Ophthalmology Physician in Concord, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
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

2225 Port Chicago Hwy
Concord, CA 94520-2051
Phone: (925) 689-7744
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 number1699944298
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Clark Tsai — Ceo/President · (925) 689-7744
NPI enumeratedFebruary 27, 2008
Last updated in NPPESDecember 9, 2011
Mailing address2225 Port Chicago Hwy, Concord, CA 94520-2051

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