NPIMap

Individual provider Active NPI

Mark Louis Siefring, MD

  • Internal Medicine Physician
  • Louisville, KY
National Provider Identifier
1245729870
Registry record updated Aug 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
34079 Issued in KY
Practice address
1250 Bardstown Rd Ste 8
Louisville, KY 40204-1333
Phone
(502) 456-7047
Fax
(502) 452-1491
NPI assigned
May 9, 2018
Last updated
Aug 11, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X MD203727 OR
Internal Medicine Physician 207R00000X 34079 KY Primary

Addresses

Primary practice location

1250 Bardstown Rd Ste 8
Louisville, KY 40204-1333

Mailing address

PO Box 776351
Chicago, IL 60677-6351
Phone (502) 588-9490

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
I20191213000891 KY Practitioner - Internal Medicine 0941633465 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Louisville School of Medicine, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Community Medical Associates IncGroup PAC ID 7012811284, 1,368 clinicians

Practice addresses (Care Compare)

1250 Bardstown Rd
Suite 8
Louisville, KY 40204-1333
Phone (502) 456-7047

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions11
Removal or shaving of skin growth1-10
Skin biopsy14

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Community Medical Associates, Inc. Single Specialty Current Accepting new patients
Community Medical Associates, Inc. Single Specialty CurrentSince Aug 1, 2025 Accepting new patients
Community Medical Associates, Inc. Internal Medicine CurrentSince Aug 1, 2025 Accepting new patients
Community Medical Associates, Inc. Single Specialty Past Accepting new patients

Locations

325 W Walnut St
Ste 600
Lebanon, KY 40033
Phone (270) 699-9500

1250 Bardstown Rd
Ste 8
Louisville, KY 40204
Phone (502) 456-7047

825 Barret Ave
Louisville, KY 40204
Phone (502) 272-5165

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 14

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

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1525824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754870400000",
    "number": "1245729870",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 776351",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606776351",
            "telephone_number": "502-588-9490",
            "fax_number": "502-272-5116"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1250 BARDSTOWN RD STE 8",
            "city": "LOUISVILLE",
            "state": "KY",
            "postal_code": "402041333",
            "telephone_number": "502-456-7047",
            "fax_number": "502-452-1491"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEFRING",
        "first_name": "MARK",
        "middle_name": "LOUIS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-05-09",
        "last_updated": "2025-08-11",
        "certification_date": "2025-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OR",
            "license": "MD203727",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KY",
            "license": "34079",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Louisville, KY

Sources for this page

Verify at the official NPI Registry.