Individual provider Active NPI

Mason Edward Gentner, MD

  • Emergency Medicine Physician
  • Saint Louis, MO
National Provider Identifier
1508450602
Registry record updated Sep 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
2026039078 Issued in MO
Practice address
1 Barnes Jewish Hospital PLZ
Saint Louis, MO 63110-1003
Phone
(314) 747-3000
NPI assigned
Mar 1, 2021
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 1, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 2026039078 MO Primary
Critical Care Medicine (Internal Medicine) Physician 207RC0200X 2026039078 MO

Addresses

Primary practice location

1 Barnes Jewish Hospital PLZ
Saint Louis, MO 63110-1003

Mailing address

310 W Losey St
Scott Afb, IL 62225-5250
Phone (618) 256-9355

Other practice location 1

310 W Losey St
Scott AFB, IL 62225-5250
Phone (618) 256-9355

Other identifiers 1

IdentifierTypeStateIssuer
01089088AOtherINSTATE MEDICAL LICENSE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA
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 1

Enrollment IDStateProvider typePAC IDDetails
I20250917002409 PA Practitioner - Emergency Medicine 1951710730 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Pennsylvania State University College of Medicine, 2021
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

2 Hot Meal St
Pittsburgh, PA 15203-2348

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
01089088AINMDStudent in an Organized Health Care Education/Training Program

Practice roles

OrganizationSpecialtyStatusNew patients
Upmc Community Medcine Inc CurrentSince Oct 1, 2025 Accepting new patients
University of Pittsburgh Physicians Current Accepting new patients
University of Pittsburgh Physicians CurrentSince Sep 1, 2025 Accepting new patients
Upmc Community Medicine, Inc Current Accepting new patients
Upmc Community Medicine, Inc CurrentSince Oct 1, 2025 Accepting new patients
University of Pittsburgh Physicians CurrentSince Sep 1, 2025 Accepting new patients

Locations

3600 Forbes Ave
Ste 140
Pittsburgh, PA 15213

200 Lothrop St
Pittsburgh, PA 15213
Phone (412) 647-3553

339 6th Ave
Fl 5
Pittsburgh, PA 15222
Phone (412) 560-8762

2 Hot Metal St
#One
Pittsburgh, PA 15203
Phone (412) 432-5864

Interoperability endpoints

  • Direct secure messaging: mason.gentner@upmcdirect.com

Organizations & group practices 6

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.

NPI Registry JSON

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

{
    "created_epoch": "1614556800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788220800000",
    "number": "1508450602",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "310 W LOSEY ST",
            "city": "SCOTT AFB",
            "state": "IL",
            "postal_code": "622255250",
            "telephone_number": "618-256-9355"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BARNES JEWISH HOSPITAL PLZ",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101003",
            "telephone_number": "314-747-3000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "310 W Losey St",
            "address_purpose": "LOCATION",
            "city": "Scott AFB",
            "state": "IL",
            "postal_code": "622255250",
            "country_code": "US",
            "telephone_number": "618-256-9355",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GENTNER",
        "first_name": "MASON",
        "middle_name": "EDWARD",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-01",
        "last_updated": "2026-09-01",
        "certification_date": "2026-09-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MO",
            "license": "2026039078",
            "primary": true
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "MO",
            "license": "2026039078",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE MEDICAL LICENSE",
            "identifier": "01089088A",
            "state": "IN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Saint Louis, MO

Sources for this page

Verify at the official NPI Registry.