Charles R. ThomasJr., M.D.

  • Professor of Radiation Medicine, School of Medicine


  • Cancer

Special focus on

  • Colorectal Cancer
  • Esophageal Cancer
  • Lung Cancer
  • Pancreatic Cancer
  • Radiation Oncology

I see patients at


Dr. Charles R. Thomas, Jr. is trained in both medical oncology and radiation oncology. He joined the OHSU faculty in November 2005 as professor and chair of the Department of Radiation Medicine.

Dr. Thomas is an active member of several professional associations, including the American College of Radiology, the American Society of Clinical Oncology, and the American Association for Cancer Research. He serves on the editorial boards of the Journal of Clinical Oncology, Gastrointestinal Cancer Research, Diseases of the Esophagus, and CA: A Cancer Journal for Clinicians.

He is the national chairman or co-chairman for the following clinical trials: SWOG-0220, SWOG-0533, SWOG-0414, SWOG-0356, ACOSOG-Z06041, and NSABP FR1. His primary areas of interest are gastrointestinal and thoracic cancers, translational research (research translating scientific findings into treatments) and outcomes research (research into how well cancer treatments work for patients).


  • M.D., 1985, University of Illinois College of Medicine
  • Residency:

    • Radiation Oncology, University of Washington
    • Internal Medicine, Baylor College of Medicine
  • Fellowship:

    • Medical oncology, Rush University, 1991
  • Certifications:

    • American Board of Radiology/Radiation Oncology
    • American Board of Internal Medicine (Medical Oncology Sub-specialty)


  • English

Memberships and associations

  • American Society for Therapeutic Radiology and Oncology
  • American Society of Clinical Oncology
  • Radiological Society of North America
  • Society of Chairmen of Academic Radiation Oncology Programs
  • Southwest Oncology Group
  • American College of Surgeons Oncology Groups

Patient ratings

4.7 out of 5 (158 Ratings, 45 Comments)

The patient ratings score is an average of all responses to the question "How likely would you be to recommend this provider to your family and friends (on a scale of 0 to 10)" on our nationally-recognized NRC patient surveys.

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