Individual provider Active NPI

James Leonard Gajewski, MD

  • Internal Medicine Physician
  • Joint Base Lewis McChord, WA
National Provider Identifier
1356349112
Registry record updated Sep 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
MD61306843 Issued in WA
Practice address
9040 Jackson Ave
Joint Base Lewis McChord, WA 98431-0001
Phone
(253) 968-1110
NPI assigned
Jul 14, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 5, 2025

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

Specialties & licenses 9

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X G57111 CA
Hematology & Oncology Physician 207RH0003X MD.61306843 WA
Internal Medicine Physician 207R00000X MD61306843 WA Primary
Internal Medicine Physician 207R00000X G57111 CA
Hematology & Oncology Physician 207RH0003X DR.0071741 CO
Hematology & Oncology Physician 207RH0003X J3475 TX
Hematology & Oncology Physician 207RH0003X MD27403 OR
Hematology & Oncology Physician 207RH0003X MD61306843 WA
Internal Medicine Physician 207R00000X DR.00717741 CO

Addresses

Primary practice location

9040 Jackson Ave
Joint Base Lewis McChord, WA 98431-0001

Mailing address

9040 Jackson Ave
Madigan Army Hospital
Joint Base Lewis McChord, WA 98431-0001
Phone (503) 352-8657

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, CO2 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

Enrollment IDStateProvider typePAC IDDetails
I20200515001711 CA Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 7911948047
I20231107001862 CO Order and Referring Only - Hematology/OncologyPractitioner - Hematology/Oncology 7911948047

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
G57111CAMDInternal Medicine Physician
DR.00717741COMDInternal Medicine Physician
MD61306843WAMDInternal Medicine Physician
J3475TXMDHematology & Oncology Physician
MD.61306843WAMDHematology & Oncology Physician

NPI Registry JSON

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

{
    "created_epoch": "1121299200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757030400000",
    "number": "1356349112",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9040 JACKSON AVE",
            "address_2": "MADIGAN ARMY HOSPITAL",
            "city": "JOINT BASE LEWIS MCCHORD",
            "state": "WA",
            "postal_code": "984310001",
            "telephone_number": "503-352-8657",
            "fax_number": "253-968-1110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9040 JACKSON AVE",
            "city": "JOINT BASE LEWIS MCCHORD",
            "state": "WA",
            "postal_code": "984310001",
            "telephone_number": "253-968-1110"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GAJEWSKI",
        "first_name": "JAMES",
        "middle_name": "LEONARD",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-14",
        "last_updated": "2025-09-05",
        "certification_date": "2025-09-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "G57111",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WA",
            "license": "MD.61306843",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "MD61306843",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G57111",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CO",
            "license": "DR.0071741",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "TX",
            "license": "J3475",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "OR",
            "license": "MD27403",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WA",
            "license": "MD61306843",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CO",
            "license": "DR.00717741",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Joint Base Lewis McChord, WA

Sources for this page

Verify at the official NPI Registry.