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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gregory D Naden, MD

Radiation Oncology Physician in Mountain Home, AR · enumerated 2005 · practices at Highlands Oncology Group, PA.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1588649396

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Registry record

Entity type Individual (Type 1)
Name Mr. Gregory D Naden
Credential MD
Sex Male
Practice address 639 Hospital Dr, Mountain Home, AR, 72653
Phone (479) 587-1700
Fax (479) 587-1366
Enumeration date Dec 14, 2005
Last updated in NPPES Jul 6, 2026

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License E-15710 (AR) Primary
2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 36068 (IA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Gregory Naden?
The National Provider Identifier (NPI) for Gregory Naden is 1588649396, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Naden practice?
The practice location on file with NPPES is in Mountain Home, AR. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-06.