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

Alfonso Diaz

Individual provider Marriage & Family Therapist · NPI 1528787355

Alfonso Diaz is a Marriage & Family Therapist in Fairfield, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2022

Practice location Address checks out

4820 Business Center Dr Ste 210
Fairfield, CA 94534-1696
Phone: (707) 224-8266
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 141546 (CA)

Record details

NPI number1528787355
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedAugust 24, 2022
Last updated in NPPESSeptember 20, 2023
Certification dateSeptember 20, 2023
Mailing address176 Coloma Way, Vallejo, CA 94589-1419

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