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

MS. Andrea Williamson, MFT

Individual provider Marriage & Family Therapist · NPI 1568671881

MS. Andrea Williamson, MFT is a Marriage & Family Therapist in Sebastopol, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MFT — Marriage and Family Therapist
A therapist who treats couples and families.

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Practice location Address checks out

7772 Washington Ave Ste A
Sebastopol, CA 95472-3628
Phone: (707) 824-1460
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence MFC36335 (CA)

Record details

NPI number1568671881
Entity typeIndividual (Type 1)
GenderFemale
Credentials MFT
Sole proprietorYes
NPI enumeratedMay 22, 2007
Last updated in NPPESJanuary 24, 2015
Mailing address7772 Washington Ave, Suite A, Sebastopol, CA 95472-3628

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