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

Individual provider Clinical Social Worker · NPI 1871777631

Mary Katherine Williamson, LCSW is a Clinical Social Worker in Sacramento, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

3331 Power Inn Rd Ste 170
Sacramento, CA 95826-3889
Phone: (916) 875-9980
Fax: (916) 875-9970
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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 24015 (CA)

Record details

NPI number1871777631
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedDecember 28, 2007
Last updated in NPPESJanuary 3, 2008

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