Dr. C.M. Williams, board-certified radiation oncologist and retired U.S. Army Lieutenant Colonel

About Dr. C.M. “Queen” Williams, M.D.

A Veteran Serving Veterans

Board-Certified Radiation Oncologist  |  Retired U.S. Army Lieutenant Colonel  |  Educator & Patient Advocate

As a former enlisted Soldier, retired Army Lieutenant Colonel, and board-certified Radiation Oncologist, Dr. Williams understands both the realities of military service and the medical complexity behind cancer, toxic exposure, and service-related claims.

A personal message

Hear from Dr. Williams

Press play for a short message from Dr. Williams about why she does this work.

The Physician

  • Board-certified Radiation Oncologist (certified 2009; certification current)
  • M.D., F. Edward Hébert School of Medicine, Uniformed Services University (USUHS)
  • Residency in Radiation Oncology, Northwestern Memorial Hospital, Chicago
  • B.S. with Honors in Biochemistry, Rutgers University
  • Proton Therapy Certificate, University of Maryland
  • Expertise across 3D-CRT, IMRT, SRS/SBRT, IGRT, and proton therapy
  • 20+ years across military and civilian oncology

The Soldier

  • Retired U.S. Army Lieutenant Colonel, Medical Corps — a 24-year career (retired 2019)
  • Began as an enlisted Soldier — Nuclear, Biological & Chemical (NBC) Specialist — before commissioning
  • Served at Brooke Army Medical Center, Walter Reed, Fort Belvoir, and Walter Reed National Military Medical Center, Bethesda
  • Helped establish radiation oncology services within the Department of Defense
  • Educated first responders worldwide on radiation incident preparedness (AFRRI)

The Educator & Leader

  • Assistant Professor of Radiology, USUHS
  • Chief, Radiation Oncology Services, Fort Belvoir Community Hospital
  • Assistant Chief, Radiation Oncology Services, Walter Reed Army Medical Center
  • Physician Surveyor, American College of Radiology accreditation program
  • Governor-appointed, Senate-confirmed member, Maryland Board of Physicians
  • Fellow, Federation of State Medical Boards
  • Service on committees for women, diversity, and health equity (ACR; ASTRO CHEDI)

Roots & Heart

  • A native of Kingston, Jamaica
  • Active in faith and community service; has served as a health ministry leader
  • Known for bringing clarity, compassion, and encouragement to every conversation
If you served, your story matters. If radiation or cancer was mentioned and you walked away confused — you are in the right place.

Podcast & Speaking Engagements

Dr. Williams shares her perspective on health, service, and life after a diagnosis — on her own podcast and on stages and broadcasts around the world.

Intimacy After — the podcastDr. Williams’ podcast on health, healing, and life after a diagnosis. Press play below.

Veteran Business Radio

Guest appearance with host Lee Kantor.

2014 Keynote Speaker: Dr. C. McGann Williams

2017 Cayman Island Conference

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