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

Diana L. Guest, MFT

Individual provider Marriage & Family Therapist · NPI 1659506384

Diana L. Guest, MFT is a Marriage & Family Therapist in San Diego, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2009
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

1767 Grand Ave Ste 4
San Diego, CA 92109-4400
Phone: (858) 274-1662
Fax: (858) 273-9410
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 MFC31177 (CA)

Record details

NPI number1659506384
Entity typeIndividual (Type 1)
GenderFemale
Credentials MFT
Sole proprietorYes
NPI enumeratedMay 26, 2009
Last updated in NPPESMay 26, 2009

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