Mark Irwin

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

License

6170 Issued in TN

Practice address

501 19TH St Ste 600
Knoxville, TN 37916-1852

Phone

(865) 525-4333

NPI assigned

Mar 25, 2020

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in TN

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

Specialty

Infectious Disease

Education

Other, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Covenant Medical Group IncGroup PAC ID 2860305463, 363 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Parkwest Medical Center Hospital, Knoxville, TN, CCN 440173
• Fort Sanders Regional Medical Center Hospital, Knoxville, TN, CCN 440125
• Roane Medical Center Hospital, Harriman, TN, CCN 440031
• Fort Loudoun Medical Center Hospital, Lenoir City, TN, CCN 440110

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: irwin.mark@covenanthealth.cernerdirect.com

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.

• Covenant Medical Group, Inc.

  • Family Medicine Physician
  • Knoxville, TN
  • NPI 1457302010
  Medicare reassignment Care Compare group NPD
• Covenant Medical Group, Inc

  • Durable Medical Equipment & Medical Supplies
  • Knoxville, TN
  • NPI 1871269415

  Infectious Disease

  NPD

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

• Fort Loudoun Medical Center

  • General Acute Care Hospital
  • Lenoir City, TN
  • NPI 1609860659
  Care Compare affiliation
• Fort Sanders Regional Medical Center

  • General Acute Care Hospital
  • Knoxville, TN
  • NPI 1942294814
  Care Compare affiliation
• Parkwest Medical Center

  • General Acute Care Hospital
  • Knoxville, TN
  • NPI 1396739165
  Care Compare affiliation
• Roane County Medical Center

  • General Acute Care Hospital
  • Harriman, TN
  • NPI 1700036696
  Care Compare affiliation

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

{
    "created_epoch": "1585094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753056000000",
    "number": "1104453588",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "201 19TH STREET",
            "address_2": "SUITE 600, TRUSTEES TOWER",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "37916",
            "telephone_number": "865-525-4333"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "501 19TH ST STE 600",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "379161852",
            "telephone_number": "865-525-4333"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IRWIN",
        "first_name": "MARK",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-25",
        "last_updated": "2025-07-21",
        "certification_date": "2025-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "TN",
            "license": "6170",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "Q102113",
            "state": "TN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "Irwin.mark@covenanthealth.cernerdirect.com",
            "affiliation": "N",
            "address_1": "501 19th St Ste 600",
            "city": "Knoxville",
            "state": "TN",
            "country_code": "US",
            "postal_code": "379161852",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Catherine Stroop Irwin
• James Tyler Irwin, FNP-C
• John Bruce Irwin, M.D.
• Larry Gene Irwin, DDS
• Lora Carol Irwin, WHNP
• Azhar Muhsen Isa
• Mary Susan Isaac, ANP
• Fredia Isaacs
• Isad
• Emmanuel Emmanuel Isang, M.D.

• Infectious Disease Physician in Knoxville, TN
• Providers in Knoxville, TN by specialty
• Infectious Disease Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 21, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.