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

Clark T Welsh, OD

Individual provider Optometrist · NPI 1891842548

Clark T Welsh, OD is an Optometrist in San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

1635 Divisadero St Ste 400
San Francisco, CA 94115-3043
Phone: (415) 833-2020
Fax: (415) 833-2609
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 9121 (CA)

Record details

NPI number1891842548
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJanuary 4, 2007
Last updated in NPPESJanuary 28, 2022
Certification dateJanuary 28, 2022

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