Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John Gleason Jr., MD

Individual provider Radiation Oncology Physician · NPI 1457591539

Dr. John Gleason Jr., MD is a Radiation Oncology in Huntsville, Alabama. Qualified in 2008, 18 years ago. Practices with Oncology Specialties, PC, a 106-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Alabama.

Years since qualifying
18
Licensed in
AL
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

201 Sivley Rd SW Ste 10
Huntsville, AL 35801-5138
Phone: (256) 319-5400
Fax: (256) 327-5977
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1 Hospital Dr Sw Ste 100, Huntsville, AL 35801-3495 — (256) 319-5400
  • 3601 Cci Dr Nw Ste 10, Huntsville, AL 35805-2609 — (256) 319-5400

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence MD.32447 (AL)

Record details

NPI number1457591539
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 2, 2009
Last updated in NPPESJanuary 28, 2026
Certification dateJanuary 28, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Oncology Specialties, P.C. — 106 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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