Gregory Naden, MD
NPI 1588649396 · Radiation Oncology Physician · Mountain Home, AR
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Naden, MD is a Radiation Oncology Physician provider in Mountain Home, AR (NPI 1588649396).
Provider details
- NPI number
- 1588649396
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36068 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,448 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 1,935 | $298 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 1,536 | $104 |
| Calculation of Radiation Therapy Dose77300 | 608 | $58 |
| Continuing Radiation Therapy Consultation Per Week77336 | 519 | $74 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 465 | $171 |
| Radiation Treatment Delivery,3 Or More Separate Treatment Areas, Custom Blocking, Tangential Ports, Wedges, Rotational Beam, Compensators, Electron Beam; 6-10 MevG6012 | 279 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 57 | 24 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 41 | 28 |
| Triamcinolone Acetonide | 17 | — |
| Ondansetronbrand: Ondansetron Odt | 14 | — |
| Oxycodone Hcl | 12 | — |
| Alprazolam | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$233 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-14
- Last updated
- 2023-06-16
- Certified
- 2023-06-16
Frequently asked questions
- What is Gregory Naden's NPI number?
- Gregory Naden's National Provider Identifier (NPI) is 1588649396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Naden's specialty?
- Gregory Naden is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Naden located?
- Gregory Naden's practice location on file with NPPES is 639 Hospital Dr, Mountain Home, AR 72653-2914.
- What is Gregory Naden's phone number?
- The practice phone number listed in the NPPES registry for Gregory Naden is (479) 587-1700.
- Does Gregory Naden accept Medicare?
- Gregory Naden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Naden's NPI active?
- Yes — Gregory Naden's NPI (1588649396) is active in the NPPES registry as of the last update on 2023-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.