NPIMap

Individual provider Active NPI

Marc Patrick Janson, M.D.

  • Anesthesiology Physician
  • Louisville, KY
National Provider Identifier
1164416129
Registry record updated Apr 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
39543 Issued in KY
Practice address
200 Abraham Flexner Way
Louisville, KY 40202-2877
Phone
(502) 852-5851
NPI assigned
Sep 7, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 17, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 39543 KY Primary

Addresses

Primary practice location

200 Abraham Flexner Way
Louisville, KY 40202-2877

Mailing address

PO Box 909
Louisville, KY 40201-0909
Phone (502) 588-0328

Other practice location 1

4000 Kresge Way
Louisville, KY 40207-4605
Phone (502) 259-5391

Other identifiers 1

IdentifierTypeStateIssuer
200519710MedicaidIN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in KY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20050711000468 KY Practitioner - Anesthesiology 3173559390 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
University of Louisville School of Medicine, 2001
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of Louisville Physicians IncGroup PAC ID 3476725599, 1,438 clinicians

Practice addresses (Care Compare)

200 Abraham Flexner Way
Louisville, KY 40202-1886
Phone (502) 587-4401

Hospital & facility affiliations

  • Norton Clark Hospital Hospital, Jeffersonville, IN, CCN 150009
  • UOFL HEALTH - JEWISH HOSPITAL and Mary & Elizabeth Hospital Hospital, Louisville, KY, CCN 180040

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
U S Anesthesia Partners of Kentucky PSC Anesthesiology PastSince Jul 1, 2023 Accepting new patients

Organizations & group practices 2

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.

Hospital & facility affiliations 23

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 23

NPI Registry JSON

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

{
    "created_epoch": "1126051200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776384000000",
    "number": "1164416129",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 909",
            "city": "LOUISVILLE",
            "state": "KY",
            "postal_code": "402010909",
            "telephone_number": "502-588-0328"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 ABRAHAM FLEXNER WAY",
            "city": "LOUISVILLE",
            "state": "KY",
            "postal_code": "402022877",
            "telephone_number": "502-852-5851"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4000 Kresge Way",
            "address_purpose": "LOCATION",
            "city": "Louisville",
            "state": "KY",
            "postal_code": "402074605",
            "country_code": "US",
            "telephone_number": "502-259-5391",
            "fax_number": "502-259-9733",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JANSON",
        "first_name": "MARC",
        "middle_name": "PATRICK",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-07",
        "last_updated": "2026-04-17",
        "certification_date": "2026-04-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "KY",
            "license": "39543",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200519710",
            "state": "IN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Louisville, KY

Sources for this page

Verify at the official NPI Registry.