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

MS. Marilyn Gail Tonneson, MFT

Individual provider Marriage & Family Therapist · NPI 1679541486

MS. Marilyn Gail Tonneson, MFT is a Marriage & Family Therapist in Atascadero, California. Licensed in California. Registered with an NPI since 2006.

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 →

Practice location Address checks out

4555 El Camino Real Ste G
Atascadero, CA 93422-2700
Phone: (805) 461-1711
Fax: (805) 461-0620
Show map & directions

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence MFC 19856 (CA)

Record details

NPI number1679541486
Entity typeIndividual (Type 1)
GenderFemale
Credentials MFT
Sole proprietorNo
NPI enumeratedMarch 8, 2006
Last updated in NPPESJuly 13, 2026

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