(509) 228-1000 WA
(208) 754-3100 ID

O. Kenneth Macdonald, MD


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Radiation Oncology


Tumor Treating Fields (Optune)



Dr. Macdonald’s career is marked by developing and honing his skills to effectively provide radiotherapy for a variety of cancer types for both females and males. 
Dr. Macdonald’s long-time interest in stereotactic body radiotherapy (SBRT), intensity-modulated radiotherapy (IMRT) and advanced radiotherapy techniques have inspired him to seek for ways to expand the role of radiotherapy in treating a variety of primary and recurrent malignancies. His participation in research groups, clinical trials, and multi-disciplinary care teams allows opportunity for patients to undergo additional courses of radiation, once thought impractical, to achieve control, relief and confidence, in addition to the standard radiotherapy options. 
In his spare time, Dr. Macdonald enjoys exploring the world with his wife, spending time with his 5 children, participating in a variety of fitness activities, barbecuing, and cheering for his favorite sports teams.

Medical School:

  • University of Texas Health Science Center (MD); Houston, TX


  • Mayo School of Graduate Medical Education; Scottsdale, AZ


  • Huntsman Cancer Institute (Radiation Oncology); Salt Lake City, UT


  • American Board of Radiology: Radiation Oncology


Honors / Leadership
  • Medical Director, Dept of Radiation Oncology, St Luke’s East Hospital (2013-2021)
  • Medical Director, Dept of Radiation Oncology, Providence Medical Center (2007-2010)
  • Assistant Professor, Radiation Oncology, Mayo Clinic College of Medicine (2007-2010)
  • Roentgen Resident/Fellow Research Award, Huntsman Cancer Institute (2007)
  • Chief Resident, Dept of Radiation Oncology, Huntsman Cancer Institute (2006-2007)
  • Prostate Brachytherapy Fellowship, American Brachytherapy Society (2006)
  • Research Scholar, CaPSURE™ (2005)
  • Oncura Scholarship, Seattle Prostate Cancer Institute (2004)
  • National Student Membership Award, American Medical Association (2001)
  • Physician Oncology Education Program Scholarship, Texas Medical Association (2001, 2000)
  • Medical Student Summer Scholar, MD Anderson Cancer Center (1999)
  • Alpha Omega Alpha Honor Medical Society
  • American College of Radiation Oncology (ACRO)
  • American Medical Association (AMA)
  • American Society of Clinical Oncology (ASCO)
  • American Society of Therapeutic Radiology and Oncology (ASTRO)