Grant Michael Clark, M.D.

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

51020 Issued in TN

Practice address

1915 White Avenue
Knoxville, TN 37916-2399

Phone

(865) 331-1155

Fax

(865) 331-3165

NPI assigned

Apr 7, 2009

Last updated

May 18, 2026By the provider in NPPES

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

Radiation Oncology

Education

West Virginia University School of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

East Tennessee Radiation Oncology, P.C.Group PAC ID 6103917729, 8 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Fort Sanders Regional Medical Center Hospital, Knoxville, TN, CCN 440125
• Parkwest Medical Center Hospital, Knoxville, TN, CCN 440173
• Cumberland Medical Center Hospital, Crossville, TN, CCN 440009
• Morristown Hamblen Hospital Association Hospital, Morristown, TN, CCN 440030
• Leconte Medical Center Hospital, Sevierville, TN, CCN 440081

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Quality

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: clark.grant.michael@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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• East Tennessee Radiation Oncology, P.C.

  • Radiation Oncology Physician
  • Knoxville, TN
  • NPI 1962589150
  Medicare reassignment Care Compare group NPD
• Thompson Oncology Group

  dba DBA Covenant Health Oncology Group

  • Hematology & Oncology Physician
  • Knoxville, TN
  • NPI 1619975737
  Medicare reassignment

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

• Cumberland Medical Center, Inc.

  dba Cumberland Medical Center

  • General Acute Care Hospital
  • Crossville, TN
  • NPI 1871596403
  Care Compare affiliation
• Fort Sanders Regional Medical Center

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

  • General Acute Care Hospital
  • Sevierville, TN
  • NPI 1528052578
  Care Compare affiliation
• Morristown Hamblen Hospital Association

  dba Morristown Hamblen Healthcare System

  • General Acute Care Hospital
  • Morristown, TN
  • NPI 1912997024
  Care Compare affiliation
• Parkwest Medical Center

  dba Peninsula Div Parkwest MC

  • General Acute Care Hospital
  • Knoxville, TN
  • NPI 1396739165
  Care Compare affiliation

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

{
    "created_epoch": "1239062400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779062400000",
    "number": "1700029626",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 24120",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "379332120",
            "telephone_number": "865-803-4321",
            "fax_number": "865-988-5658"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1915 WHITE AVENUE",
            "city": "KNOXVILLE",
            "state": "TN",
            "postal_code": "379162399",
            "telephone_number": "865-331-1155",
            "fax_number": "865-331-3165"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CLARK",
        "first_name": "GRANT",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-04-07",
        "last_updated": "2026-05-18",
        "certification_date": "2026-05-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "TN",
            "license": "51020",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "Q005973",
            "state": "TN"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "clark.grant.michael@covenanthealth.cernerdirect.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1915 White Avenue",
            "city": "Knoxville",
            "state": "TN",
            "country_code": "US",
            "postal_code": "379162399",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Cheyenne Amilee Clark, RMA
• Christopher Timothy Clark, M.D.
• David Clark, RBT
• Edna Kathleen Clark, LCSW
• Ginger Clark, P.T.A.
• Guy Clark, MD
• Jennie S Clark, PA C
• Jennifer Jarrett Clark, MS, RD, LDN
• Jessica Marie Clark, CPHT
• Jo-Ella Clark

• Radiation Oncology Physician in Knoxville, TN
• Providers in Knoxville, TN by specialty
• Radiation Oncology Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 18, 2026; 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.