James William Isherwood III, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

128618 Issued in CA

Practice address

15230 Lakeshore Dr
Clearlake, CA 95422-8107

Phone

(707) 995-4545

NPI assigned

Aug 12, 2014

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

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 Social Worker

Education

Other, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Adventist Health Clearlake Hospital Inc.Group PAC ID 3072421197, 84 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

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.

• Adventist Health Clearlake Hospital Inc.

  • Critical Access Hospital
  • Clearlake, CA
  • NPI 1124018031
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1407801600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767830400000",
    "number": "1861801151",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 16",
            "city": "LUCERNE",
            "state": "CA",
            "postal_code": "954580016"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15230 LAKESHORE DR",
            "city": "CLEARLAKE",
            "state": "CA",
            "postal_code": "954228107",
            "telephone_number": "707-995-4545"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ISHERWOOD",
        "first_name": "JAMES",
        "middle_name": "WILLIAM",
        "name_prefix": "Mr.",
        "name_suffix": "III",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-08-12",
        "last_updated": "2026-01-08",
        "certification_date": "2026-01-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "CA",
            "license": "128618",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Laura Estefani Hurtado
• Stephanie Husted
• Gina Hutchins
• Huong Thu Huynh
• Ilkyoon Kim MD a Prof Corp
• Jack M. Elizares Optometric Corporation
• Claire Elise Jacobs
• Austin Jacquillard
• Jennifer a Dowalter MD a Professional Corporation
• Raymond Dean Jennings, MD

• Clinical Social Worker in Clearlake, CA
• Providers in Clearlake, CA by specialty
• Clinical Social Worker in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 8, 2026; 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.