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

Mark E Claycomb, LCSW

Individual provider Psychologist · NPI 1790791796

Mark E Claycomb, LCSW is a Psychologist in San Francisco, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

55 New Montgomery St #420
San Francisco, CA 94105
Phone: (415) 522-7400
Fax: (445) 543-1932
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence LCS135532 (CA)
Social Worker Taxonomy 104100000X · Licence LCS13553 (CA)

Record details

NPI number1790791796
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedJuly 31, 2006
Last updated in NPPESSeptember 11, 2025

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