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

Mr. William James Formaker, MFT

Individual provider Marriage & Family Therapist · NPI 1811901143

Mr. William James Formaker, MFT is a Marriage & Family Therapist in Santa Rosa, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MFT — Marriage and Family Therapist
A therapist who treats couples and families.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

606 Beaver St
Santa Rosa, CA 95404-4228
Phone: (707) 544-5717
Fax: (707) 887-8208
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

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence MFC29030 (CA)

Record details

NPI number1811901143
Entity typeIndividual (Type 1)
GenderMale
Credentials MFT
Sole proprietorYes
NPI enumeratedJuly 29, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Santa Rosa