Individual provider Active NPI

Justin Daniel Gellman, BS

  • General Practice Physician
  • Clayton, MO
National Provider Identifier
1659122182
Registry record updated Jul 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Practice PhysicianTaxonomy code 208D00000X
License
2026028673 Issued in MO
Practice address
248 Gay Ave
Clayton, MO 63105-3622
Phone
(314) 605-9889
NPI assigned
Apr 1, 2024
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 16, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
General Practice Physician 208D00000X 2026028673 MO Primary

Addresses

Primary practice location

248 Gay Ave
Clayton, MO 63105-3622

Mailing address

248 Gay Ave
Clayton, MO 63105-3622
Phone (314) 605-9889

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
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.

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Bachelor of Science

NPI Registry JSON

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

{
    "created_epoch": "1711929600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784160000000",
    "number": "1659122182",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "248 GAY AVE",
            "city": "CLAYTON",
            "state": "MO",
            "postal_code": "631053622",
            "telephone_number": "314-605-9889"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "248 GAY AVE",
            "city": "CLAYTON",
            "state": "MO",
            "postal_code": "631053622",
            "telephone_number": "314-605-9889"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GELLMAN",
        "first_name": "JUSTIN",
        "middle_name": "DANIEL",
        "name_prefix": "Mr.",
        "credential": "BS",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2024-04-01",
        "last_updated": "2026-07-16",
        "certification_date": "2026-07-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "MO",
            "license": "2026028673",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Clayton, MO

Sources for this page

Verify at the official NPI Registry.