NPPES file of Aug 9, 2026

Gregory D. Naden, MD

Radiation Oncology Physician · Mountain Home, AR

Gregory D. Naden, MD is a radiation oncology physician with a practice address in Mountain Home, Arkansas, and NPI 1588649396, issued on Dec 14, 2005. Check the license (Arkansas E-15710, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588649396
Name
Gregory D. Naden
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
E-15710 AR
36068 IA
Self-reported in NPPES; status is on the state search
Practice location
639 Hospital Dr, Mountain Home, AR 72653
Phone
(479) 587-1700
Enumerated
Dec 14, 2005
Record last updated
Jul 6, 2026
Fax
(479) 587-1366
Medicare enrollment
Enrolled (PECOS I20220815002276); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 639 Hospital Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jamie Lee AldakkourHematology & Oncology Physician1366070179
  2. Martin Barnes, M.D.Hematology & Oncology Physician1730583089
  3. Jennifer Carpenter, FNPNurse Practitioner1073249280
  4. Amanda Carson, APRNNurse Practitioner1558710608
  5. Peter Li, MDHematology & Oncology Physician1942709647
  6. Leslie Lockridge, MDHematology (Internal Medicine) Physician1437133352

Verify Gregory D. Naden in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArkansas State Medical Board
    Search for license E-15710
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arkansas license search

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2.0 times the Medicare Part D claims of the average radiation oncology physician in 2024

268 Medicare Part D claims for 109 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 62 claims were for opioids.

  1. Gregory Naden268
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl57 claims
  2. Hydrocodone-Acetaminophen41 claims
  3. Triamcinolone Acetonide17 claims
  4. Ondansetron Odt14 claims
  5. Oxycodone Hcl12 claims
  6. Alprazolam11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $232.65

16 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory Naden$232.65
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Highlands Oncology Group PAMountain Home, AR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Radiation Oncology Physician providers in Arkansas

There are 49 radiation oncology physician records in Arkansas.

Other radiation oncology physician records in Arkansas

  1. Edward Abraham, M.D.Hot Springs, AR1710093166
  2. Scarlett Acklin-Wehnert, MDFayetteville, AR1295362184
  3. Hiba Ahmed, M.D., M.P.H.Jonesboro, AR1043743339
  4. Sondos Alkhatib, MDLittle Rock, AR1205446739
  5. John Allgood, M.D.Jonesboro, AR1184674608
  6. Joshua Anderson, MDFayetteville, AR1982231833
  7. Brent Cameron, M.D., PH.D.Little Rock, AR1265850325
  8. Graham Campbell, MDConway, AR1194287482
  9. Bruce Cross, MDFort Smith, AR1922090315
  10. Richard (rick) Crownover, MDHot Springs, AR1225238215

Common questions

What is Gregory D. Naden, MD's NPI number?

Gregory D. Naden, MD's National Provider Identifier (NPI) is 1588649396, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Gregory D. Naden, MD located?

The NPPES record lists a practice address at 639 Hospital Dr, Mountain Home, AR, 72653. Phone: (479) 587-1700. Providers update this record themselves, so call before visiting.

How can I verify Gregory D. Naden, MD's license?

NPPES lists Arkansas license number E-15710, as entered by the provider. Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory D. Naden, MD prescribe under Medicare Part D?

In 2024, Gregory D. Naden, MD had 268 Medicare Part D claims for 109 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.