James Amster, M.D.

Primary specialty

Neuroradiology PhysicianTaxonomy code 2085N0700X

License

G49317 Issued in CA

Practice address

2708 E Willow St
Signal Hill, CA 90755-2217

Phone

(562) 216-5120

Fax

(562) 216-5121

NPI assigned

May 6, 2006

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

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Merit-based Incentive Payment System (MIPS)

Final score

91.25 of 100Reported as group

Quality

75

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Kern Radiology Medical Group, Inc

  • Diagnostic Radiology Physician
  • Bakersfield, CA
  • NPI 1720023997
  NPD (past)
• Lpmi Long Beach LLC

  • Diagnostic Radiology Physician
  • Signal Hill, CA
  • NPI 1932157237
  NPD (past)
• Memrad Medical Group Inc

  • Radiology Clinic/Center
  • Long Beach, CA
  • NPI 1831173905
  NPD (past)

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

{
    "created_epoch": "1146873600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1366491623",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2708 E WILLOW ST",
            "city": "SIGNAL HILL",
            "state": "CA",
            "postal_code": "907552217",
            "telephone_number": "562-216-5120",
            "fax_number": "562-216-5121"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2708 E WILLOW ST",
            "city": "SIGNAL HILL",
            "state": "CA",
            "postal_code": "907552217",
            "telephone_number": "562-216-5120",
            "fax_number": "562-216-5121"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AMSTER",
        "first_name": "JAMES",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-06",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085N0700X",
            "taxonomy_group": "",
            "desc": "Radiology, Neuroradiology",
            "state": "CA",
            "license": "G49317",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENSE",
            "identifier": "G49317",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Tricia Amantia
• American Homepatient Inc.
• Americana Disability Transport
• Americana International Group Incorporated
• Ampl Management, Inc
• Ana Arguello, LMFT
• Arlene Andavazo
• Shelly Denise Andrews, RN, NP
• Arcs Enterprises LLC
• Edugie Asemota, D.D.S.

• Neuroradiology Physician in Signal Hill, CA
• Providers in Signal Hill, CA by specialty
• Neuroradiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• 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.