Gregory D Naden, MD

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

E-15710 Issued in AR

Practice address

639 Hospital Dr
Mountain Home, AR 72653-2914

Phone

(479) 587-1700

Fax

(479) 587-1366

NPI assigned

Dec 14, 2005

Last updated

Jul 6, 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in AR

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

Other, 1983

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Highlands Oncology Group PAGroup PAC ID 7416976196, 78 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Baxter Health Hospital, Mountain Home, AR, CCN 040027

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: nadeng@jencc.direct.varian.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.

• Highlands Oncology Group PA

  • Hematology & Oncology Physician
  • Springdale, AR
  • NPI 1346211323
  Medicare reassignment Care Compare group
• Cancer Care Associates Inc

  • Radiation Oncology Physician
  • Jonesboro, AR
  • NPI 1184968661
  Medicare reassignment NPD
• Dean Health Systems, Inc.

  dba SSM Health Davis Duehr Dean Eye Care - Portage

  • Durable Medical Equipment & Medical Supplies
  • Portage, WI
  • NPI 1427085679
  NPD (past)
• Innovis Health, LLC

  dba Essentia Health Fargo

  • General Acute Care Hospital
  • Fargo, ND
  • NPI 1215125463
  NPD (past)
• Ozarks Medical Center

  dba Ozarks Healthcare

  • General Acute Care Hospital
  • West Plains, MO
  • NPI 1831115641
  NPD (past)
• Shared Magnetic Resonance Imaging Facility, Inc

  dba SSM Health Cancer Center

  • Radiation Oncology Clinic/Center
  • Madison, WI
  • NPI 1780640532
  NPD (past)

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

• Baxter County Regional Hospital Inc

  dba BRMC Professional Fees

  • General Acute Care Hospital
  • Mountain Home, AR
  • NPI 1033147921
  Care Compare affiliation
• Baxter County Regional Hospital, Inc

  dba Baxter Health

  • General Acute Care Hospital
  • Mountain Home, AR
  • NPI 1881788933
  Care Compare affiliation

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

{
    "created_epoch": "1134518400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783296000000",
    "number": "1588649396",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3901 PARKWAY CIR",
            "city": "SPRINGDALE",
            "state": "AR",
            "postal_code": "727626362",
            "telephone_number": "479-587-1700",
            "fax_number": "479-587-1366"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "639 HOSPITAL DR",
            "city": "MOUNTAIN HOME",
            "state": "AR",
            "postal_code": "726532914",
            "telephone_number": "479-587-1700",
            "fax_number": "479-587-1366"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NADEN",
        "first_name": "GREGORY",
        "middle_name": "D",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-14",
        "last_updated": "2026-07-06",
        "certification_date": "2026-07-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "IA",
            "license": "36068",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "AR",
            "license": "E-15710",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Thomas Myers, PTA
• Myhealth Rapid Diagnostic LLC
• Mytherapy Counseling & Life Coaching Services PLLC
• Nachtigal and Nachtigal General and Vascular Surgery, PLLC
• Kent Peter Nachtigal, M.D.
• Katie Leigh Nash, MHPP
• Ariel R Nations, LPC
• Rachel Christine Nations
• Natural Smiles Pediatric Dentistry
• Nca Anesthesia LLC

• Radiation Oncology Physician in Mountain Home, AR
• Providers in Mountain Home, AR by specialty
• Radiation Oncology Physician in Arkansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 6, 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.