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

MS. Thais Xanadu Williams, MSW, LCSW

Individual provider Clinical Social Worker · NPI 1013077429

MS. Thais Xanadu Williams, MSW, LCSW is a Clinical Social Worker in San Francisco, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

101 15th St
San Francisco, CA 94103-5103
Phone: (415) 682-3246
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 24388 (CA)

Record details

NPI number1013077429
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSW , LCSW
Sole proprietorYes
NPI enumeratedDecember 8, 2006
Last updated in NPPESOctober 20, 2008

Other providers in San Francisco