Gary Aidan Hayes, PH.D

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

PSY10335 Issued in CA

Practice address

1303 Jefferson St Suite 600a
Napa, CA 94559

Phone

(415) 827-9969

Fax

(707) 253-0457

NPI assigned

Mar 19, 2012

Sex

Male

Sole proprietor

Yes

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

Enrolled in CA

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 1986

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

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.

• Traditions Psychiatry Group, P.C

  • Psychiatry Physician
  • Santa Rosa, CA
  • NPI 1083802979
  NPD

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

{
    "created_epoch": "1332115200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742342400000",
    "number": "1801161203",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1303 JEFFERSON ST SUITE 600A",
            "city": "NAPA",
            "state": "CA",
            "postal_code": "94559",
            "telephone_number": "415-827-9969",
            "fax_number": "707-253-0457"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1303 JEFFERSON ST SUITE 600A",
            "city": "NAPA",
            "state": "CA",
            "postal_code": "94559",
            "telephone_number": "415-827-9969",
            "fax_number": "707-253-0457"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAYES",
        "first_name": "GARY",
        "middle_name": "AIDAN",
        "name_prefix": "Dr.",
        "credential": "PH.D",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2012-03-19",
        "last_updated": "2025-03-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "PSY10335",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sontoya Hawkins
• Dennis Michael Hawley
• Jenna Hawton-Calingasan
• Jared Hayashi, O.D.
• Katelyn Haydon
• Naomi Hayes
• Natale Haynes
• Jillian Hayton
• Shanita Haywood
• Justin Hazel, PHD

• Clinical Psychologist in Napa, CA
• Providers in Napa, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.