NPIMap

Organization Active NPI

GM Medical Services LLC

  • Physical Medicine & Rehabilitation Physician
  • Golden, CO
National Provider Identifier
1073428660
Registry record updated Aug 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physical Medicine & Rehabilitation PhysicianTaxonomy code 208100000X
Legal business name
GM MEDICAL SERVICES LLC
Practice address
600 Golden Ridge Rd
Golden, CO 80401-8916
Phone
(303) 848-3900
NPI assigned
Aug 17, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 17, 2026

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

Authorized official

Name
George Marzloff, MD
Title
Member Manager
Phone
(347) 946-2791

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physical Medicine & Rehabilitation PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 208100000X Primary

Addresses

Primary practice location

600 Golden Ridge Rd
Golden, CO 80401-8916

Mailing address

4800 Happy Canyon Rd Ste 220
CMB 175
Denver, CO 80237-1074

National Provider Directory

National Provider Directory
Tax ID family
GM Medical Services LLC4 organizations share this tax ID, including this one

Other organizations with this tax ID 3

Organizations that report the same tax identification number in the National Provider Directory.

NPI Registry JSON

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

{
    "created_epoch": "1786924800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786924800000",
    "number": "1073428660",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4800 HAPPY CANYON RD STE 220",
            "address_2": "CMB 175",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802371074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 GOLDEN RIDGE RD",
            "city": "GOLDEN",
            "state": "CO",
            "postal_code": "804018916",
            "telephone_number": "303-848-3900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GM MEDICAL SERVICES LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-08-17",
        "last_updated": "2026-08-17",
        "certification_date": "2026-08-17",
        "status": "A",
        "authorized_official_last_name": "MARZLOFF",
        "authorized_official_first_name": "GEORGE",
        "authorized_official_title_or_position": "MEMBER MANAGER",
        "authorized_official_telephone_number": "347-946-2791",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "208100000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Physical Medicine & Rehabilitation",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Golden, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.