Forrest Robert Hamlin Sr., DO

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

MED-PHYS-LIC-162063 Issued in MT

Practice address

415 E Taylor St
San Jose, CA 95112

Phone

(530) 224-9144

NPI assigned

Jun 20, 2017

Reactivated

May 20, 2019

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Enrolled in ID, MT2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Hospitalist

Education

Michigan State University College of Osteopathic Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Billings ClinicGroup PAC ID 6002993516, 814 clinicians

Utah Regional Hospitalists LLCGroup PAC ID 4789807165, 119 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Billings Clinic Hospital Hospital, Billings, MT, CCN 270004
• Eastern Idaho Regional Medical Center Hospital, Idaho Falls, ID, CCN 130018

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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.

• Billings Clinic

  • Emergency Care Clinic/Center
  • Billings, MT
  • NPI 1326104845
  Medicare reassignment Care Compare group NPD
• Utah Regional Hospitalists LLC

  • Hospitalist Physician
  • Idaho Falls, ID
  • NPI 1740715507
  Medicare reassignment Care Compare group NPD
• County of Monterey

  • General Acute Care Hospital
  • Salinas, CA
  • NPI 1205863255
  NPD
• County of Monterey Behavioral Health

  • Adult Mental Health Clinic/Center
  • Salinas, CA
  • NPI 1053126003
  NPD
• Billings Clinic

  • Skilled Nursing Facility
  • Billings, MT
  • NPI 1033275557
  NPD
• Billings Clinic

  • General Practice Physician
  • Billings, MT
  • NPI 1376598714

  Family Medicine

  NPD
• County of Monterey

  • Family Medicine Physician
  • Marina, CA
  • NPI 1588617955
  NPD (past)
• Billings Clinic

  • General Acute Care Hospital
  • Billings, MT
  • NPI 1265478291
  NPD (past)
• Utah Regional Hospitalists LLC

  • Hospitalist Physician
  • Murray, UT
  • NPI 1962821223
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Billings Cinic

  • General Acute Care Hospital
  • Bozeman, MT
  • NPI 1215660840
  Care Compare affiliation
• Billings Clinic

  • Orthopaedic Surgery Physician
  • Billings, MT
  • NPI 1003953589

  Hospital

  Care Compare affiliation
• Billings Clinic

  • Family Medicine Physician
  • Billings, MT
  • NPI 1033164447

  Hospital

  Care Compare affiliation
• Billings Clinic

  • Endocrinology, Diabetes & Metabolism Physician
  • Billings, MT
  • NPI 1124310537

  Hospital

  Care Compare affiliation
• Billings Clinic

  • General Acute Care Hospital
  • Billings, MT
  • NPI 1265478291
  Care Compare affiliation
• Billings Clinic

  • Internal Medicine Physician
  • Bozeman, MT
  • NPI 1265648455

  Hospital

  Care Compare affiliation
• Billings Clinic

  • General Practice Physician
  • Billings, MT
  • NPI 1376598714

  Hospital

  Care Compare affiliation
• Billings Clinic

  • Internal Medicine Physician
  • Billings, MT
  • NPI 1871548289

  Hospital

  Care Compare affiliation
• Eastern Idaho Health Services Inc

  • General Acute Care Hospital
  • Idaho Falls, ID
  • NPI 1225082209
  Care Compare affiliation

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

{
    "created_epoch": "1497916800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759190400000",
    "number": "1225558349",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "415 E TAYLOR ST",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "95112",
            "telephone_number": "530-224-9144"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "415 E TAYLOR ST",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "95112",
            "telephone_number": "530-224-9144"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAMLIN",
        "first_name": "FORREST",
        "middle_name": "ROBERT",
        "name_suffix": "Sr.",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2017-06-20",
        "last_updated": "2025-09-30",
        "certification_date": "2025-09-30",
        "deactivation_date": "2019-03-27",
        "reactivation_date": "2019-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MT",
            "license": "MED-PHYS-LIC-162063",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MT",
            "license": "MED-PHYS-LIC-162063",
            "primary": true
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "CA",
            "license": "17023",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "ID",
            "license": "O-1860",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Hamilton Avenue Medical Group, Inc.
• Anne Marie Hamilton, FNP-BC
• Haley Rain Hamilton
• Jacqulen Raylene Hamilton, M.A., CCC/SLP
• Liliana Kossoy Hamlett, MD
• Isabel Hammana
• Alexa Hammer
• David Douglas Hammons, MD
• Alissa Hamner
• Wayne Todd Hamor

• Hospitalist Physician in San Jose, CA
• Providers in San Jose, CA by specialty
• Hospitalist Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 30, 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.