Gregory Willett MD Prof Corp

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

A22826 Issued in CA

Legal business name

GREGORY WILLETT MD PROF CORP

Practice address

4477 W 118TH St
400
Hawthorne, CA 90250-2255

Phone

(310) 978-0884

NPI assigned

Oct 16, 2006

Last updated

Oct 2, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Thomas Gregory WillettNPI 1740229483

Title

President

Phone

(310) 978-0884

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Thomas G. Willett

  • Psychiatry Physician
  • Hawthorne, CA
  • NPI 1740229483
  Medicare reassignment NPD Authorized official

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

{
    "created_epoch": "1160956800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790899200000",
    "number": "1881774743",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3521 LOMITA BLVD STE 103",
            "city": "TORRANCE",
            "state": "CA",
            "postal_code": "905055041",
            "telephone_number": "310-534-9131",
            "fax_number": "310-534-6132"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4477 W 118TH ST",
            "address_2": "400",
            "city": "HAWTHORNE",
            "state": "CA",
            "postal_code": "902502255",
            "telephone_number": "310-978-0884"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GREGORY WILLETT MD PROF CORP",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-10-16",
        "last_updated": "2026-10-02",
        "certification_date": "2026-10-02",
        "status": "A",
        "authorized_official_last_name": "WILLETT",
        "authorized_official_first_name": "THOMAS",
        "authorized_official_middle_name": "GREGORY",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "310-978-0884"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A22826",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Vanessa Gonzalez
• Rogers Govender, SUD
• Drayton P Graham, MD
• Greater Health Medical Supply Inc
• Natalie Diane Greene
• Kyle Grow
• Matthew Guerrero, RPH
• Guidance Health Services, Inc.
• Alejandra Gutierrez, PPS
• Gonzalo Gutierrez Jr.

• Psychiatry Physician in Hawthorne, CA
• Providers in Hawthorne, CA by specialty
• Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.