James William Hamill

Primary specialty

PsychologistTaxonomy code 103T00000X

License

35658 Issued in CA

Practice address

236 Soco Dr
Fullerton, CA 92832-2475

Phone

(949) 414-6182

NPI assigned

Mar 14, 2019

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

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Healing Rhythms Psychology IncGroup PAC ID 4385122019, 3 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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.

• Healing Rhythms Psychology Inc

  dba Healing Rhythms Mental Health

  • Clinical Psychologist
  • Monrovia, CA
  • NPI 1629956149
  Medicare reassignment Care Compare group NPD
• Healing Rhythms Psychological Services PC

  • Clinical Psychologist
  • Monrovia, CA
  • NPI 1679136634
  Medicare reassignment NPD
• Sud Specialty Group - Ca

  dba Rula Health

  • Addiction Medicine (Psychiatry & Neurology) Physician
  • Santa Clara, CA
  • NPI 1972138238
  Medicare reassignment NPD

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

{
    "created_epoch": "1552521600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1700345212",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "236 SOCO DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928322475"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "236 SOCO DR",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928322475",
            "telephone_number": "949-414-6182"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAMILL",
        "first_name": "JAMES",
        "middle_name": "WILLIAM",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-03-14",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "CA",
            "license": "35658",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• William Charles Andrew Hall, PA-C
• Clifford Richard Hallum, D.C.
• Taylor Halverson
• Elizabeth Ham
• Amal Isam Hamdan, FNP-C
• Hamilton Hospice and Palliative Care Inc.
• Janilane Dadula Hamilton
• Jizelle Anne Hamilton
• Laurel A Hamilton, MA
• Johna Kathleen Hammaker

• Psychologist in Fullerton, CA
• Providers in Fullerton, CA by specialty
• Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.