Ryan S Grover, M.D.

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

64645 Issued in TN

Practice address

421 South Main Street
Crossville, TN 38555-5048

Phone

(931) 456-8390

Fax

(931) 456-8389

NPI assigned

Aug 9, 2006

Last updated

Nov 21, 2025By 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 2

Addresses

Other identifiers 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

University of Southern California Keck School of Medicine, 2001

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

Thompson Oncology GroupGroup PAC ID 0941246771, 65 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Cumberland Medical Center Hospital, Crossville, TN, CCN 440009
• Parkwest Medical Center Hospital, Knoxville, TN, CCN 440173
• Fort Sanders Regional Medical Center Hospital, Knoxville, TN, CCN 440125

Merit-based Incentive Payment System (MIPS)

Final score

75 of 100Reported as individual

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rgrover19482@scrippshlth.medalliesdirect.net

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

  Radiation Oncology

  Medicare reassignment Care Compare group NPD
• Scripps Health

  dba Scripps Hospital Medical Services

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1487928891
  NPD
• Scripps Clinic Medical Group

  • Multi-Specialty Clinic/Center
  • San Diego, CA
  • NPI 1124003280
  NPD (past)

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
• 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": "1155081600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763683200000",
    "number": "1346251287",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "421 SOUTH MAIN STREET",
            "city": "CROSSVILLE",
            "state": "TN",
            "postal_code": "385555048",
            "telephone_number": "931-456-8390",
            "fax_number": "931-456-8389"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GROVER",
        "first_name": "RYAN",
        "middle_name": "S",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-09",
        "last_updated": "2025-11-21",
        "certification_date": "2025-11-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "CA",
            "license": "A81474",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "TN",
            "license": "64645",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "Q071897",
            "state": "TN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Ronald William Gray, D.C.
• Alexandria Griesser, PA-C
• Jessica Lea Griffin-Cagle, PTA
• Dylan Chad Griffin, PTA
• Andrew Grimball, MS, CCC-SLP
• Tyler G Gunderson, M.D.
• Taylor Gunn
• Patricia Patterson Guthrie, L.C.S.W.
• Jana Guy, RDH
• William Cole Hackett, DMD

• Radiation Oncology Physician in Crossville, TN
• Providers in Crossville, 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 Nov 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.