Gregory J Gagnon


SOM Clinician Educator Track -- Associate Professor
Associate Professor and Acting Chair, Department of Radiation Medicine


Radiation Medicine
  • General profile
General profile


+1 301-762-5595

Alt. phone

(202) 444-3320


Shady Grove 9711


Gregory Gagnon,MD, is Associate Professor and Acting Chair in the Department of Radiation Medicine. He is an experienced radiation oncologist with a specialty in the radiation treatment of prostate cancers, having designed the original 3D-conformal radiation treatment protocol and the high dose rate temporary brachytherapy (HDR) protocol. He also has experience with IMRT and low dose rate permanent brachytherapy. He is CyberKnife Program Director for Georgetown University Hospital and is using this superior dose-delivery technology to treat prostate cancers.


  • Residency (1990) Georgetown University Hospital, Radiation
  • Internship (1987) University of Virginia, Internal Medicine
  • MD (1986) University of Virginia, Medicine
  • BS (1982) University of Virginia, Biochemistry