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

Chester T Gregson

Individual provider Marriage & Family Therapist · NPI 1073633731

Chester T Gregson is a Marriage & Family Therapist in Ontario, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007

Practice location Address checks out

3200 E Guasti Rd
Ontario, CA 91761-8660
Phone: (619) 639-9730
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 38663 (CA)

Record details

NPI number1073633731
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 29, 2007
Last updated in NPPESAugust 4, 2025
Certification dateAugust 4, 2025

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