NPIMap

Organization Active NPI

Michigan MRT Holdings, LLC

  • Radiation Oncology Physician
  • East Lansing, MI
National Provider Identifier
1689465312
Registry record updated Jun 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Radiation Oncology PhysicianTaxonomy code 2085R0001X
Legal business name
MICHIGAN MRT HOLDINGS, LLC
Practice address
2175 Coolidge Rd
East Lansing, MI 48823-1379
Phone
(517) 999-5900
Fax
(517) 999-5901
NPI assigned
May 13, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 12, 2026

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

Authorized official

Name
Stuart Genschaw
Title
Chief Executive Officer
Phone
(616) 291-6048

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Radiation Oncology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 2085R0001X Primary
Radiation Oncology Clinic/Center 261QX0203X

Addresses

Primary practice location

2175 Coolidge Rd
East Lansing, MI 48823-1379

Mailing address

5800 Foremost Dr SE Ste 300
Grand Rapids, MI 49546-7062
Phone (517) 999-5900

Other names 1

  • CHC Lansing Cancer Center Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20251124001314 MI Part B Supplier - Radiation Therapy Center 8325530744 Practice locations: East Lansing, MI

National Provider Directory

National Provider Directory

Locations

5800 Foremost Dr SE
Ste 200
Grand Rapids, MI 49546
Phone (616) 389-1800

2959 Lucerne Dr SE
Grand Rapids, MI 49546

Practitioners & affiliated clinicians

Practitioners 18

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

View all 18

NPI Registry JSON

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

{
    "created_epoch": "1747094400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1781222400000",
    "number": "1689465312",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5800 FOREMOST DR SE STE 300",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495467062",
            "telephone_number": "517-999-5900",
            "fax_number": "517-999-5901"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2175 COOLIDGE RD",
            "city": "EAST LANSING",
            "state": "MI",
            "postal_code": "488231379",
            "telephone_number": "517-999-5900",
            "fax_number": "517-999-5901"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MICHIGAN MRT HOLDINGS, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-05-13",
        "last_updated": "2026-06-12",
        "certification_date": "2026-06-12",
        "status": "A",
        "authorized_official_last_name": "GENSCHAW",
        "authorized_official_first_name": "STUART",
        "authorized_official_title_or_position": "CHIEF EXECUTIVE OFFICER",
        "authorized_official_telephone_number": "616-291-6048"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Radiology, Radiation Oncology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "261QX0203X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Oncology, Radiation",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "CHC Lansing Cancer Center",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "CHC Lansing Cancer Center",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in East Lansing, MI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.