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

Marcus Mazza, LCSW

Individual provider Mental Health Counselor · NPI 1245384833

Marcus Mazza, LCSW is a Mental Health Counselor in San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

163 London St
San Francisco, CA 94112-2052
Phone: (415) 334-3171
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LCSW27639 (CA)
Mental Health Counselor Taxonomy 101YM0800X · Licence ASW20317 (CA)

Record details

NPI number1245384833
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedJanuary 22, 2007
Last updated in NPPESSeptember 26, 2011

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