John Gleason, MD
NPI 1457591539 · Radiation Oncology Physician · Huntsville, AL
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Gleason, MD is a Radiation Oncology Physician provider in Huntsville, AL (NPI 1457591539).
Provider details
- NPI number
- 1457591539
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD.32447 (AL)
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
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
5,994 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) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 1,419 | $111 |
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 1,223 | $321 |
| Radiation Treatment Delivery,3 Or More Separate Treatment Areas, Custom Blocking, Tangential Ports, Wedges, Rotational Beam, Compensators, Electron Beam; 6-10 MevG6012 | 468 | $206 |
| Continuing Radiation Therapy Consultation Per Week77336 | 345 | $79 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 308 | $183 |
| Calculation of Radiation Therapy Dose77300 | 298 |
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 | 24 | 15 |
| Lorazepam | 17 | 15 |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 15 | — |
| Oxycodone Hcl | 14 | — |
| Dexamethasone | 13 | 13 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 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.
$1,469 across 9 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
Additional practice locations (2)
- 1 Hospital Dr Sw Ste 100Huntsville, AL 35801-3495Phone: (256) 319-5400Fax: (256) 327-5977
- 3601 Cci Dr Nw Ste 10Huntsville, AL 35805-2609Phone: (256) 319-5400Fax: (256) 327-5977
Registry dates
- Enumerated
- 2009-03-02
- Last updated
- 2026-01-28
- Certified
- 2026-01-28
Frequently asked questions
- What is John Gleason's NPI number?
- John Gleason's National Provider Identifier (NPI) is 1457591539, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gleason's specialty?
- John Gleason is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Gleason located?
- John Gleason's practice location on file with NPPES is 201 Sivley Rd Sw Ste 10, Huntsville, AL 35801-5138.
- What is John Gleason's phone number?
- The practice phone number listed in the NPPES registry for John Gleason is (256) 319-5400.
- Does John Gleason accept Medicare?
- John Gleason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Gleason's NPI active?
- Yes — John Gleason's NPI (1457591539) is active in the NPPES registry as of the last update on 2026-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.