Chester T Gregson

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

38663 Issued in CA

Practice address

3200 E Guasti Rd
Ontario, CA 91761-8660

Phone

(619) 639-9730

NPI assigned

Mar 29, 2007

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Mood Clinical, P. C.

  • Adult Mental Health Clinic/Center
  • Santa Ana, CA
  • NPI 1922675644
  NPD
• Blue Oak Counseling Services, Inc.

  • Marriage & Family Therapist
  • Ontario, CA
  • NPI 1073124285
  NPD (past)
• Glenn Medical Center, LLC

  • Critical Access Hospital
  • Willows, CA
  • NPI 1619929759
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1175126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754265600000",
    "number": "1073633731",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 713",
            "city": "COARSEGOLD",
            "state": "CA",
            "postal_code": "936140713",
            "telephone_number": "559-676-7180"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3200 E GUASTI RD",
            "city": "ONTARIO",
            "state": "CA",
            "postal_code": "917618660",
            "telephone_number": "619-639-9730"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREGSON",
        "first_name": "CHESTER",
        "middle_name": "T",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-03-29",
        "last_updated": "2025-08-04",
        "certification_date": "2025-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "38663",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daymarea Green
• Dovona Green
• Nia Green
• Samantha Greenough, BCBA
• Erica Marie Greer
• Lisanne Grey
• Adriana Carla Grider
• Natalie Griffin-Sharpe
• Antoine Griffin
• Ladonna Griffin

• Marriage & Family Therapist in Ontario, CA
• Providers in Ontario, CA by specialty
• Marriage & Family Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.