Charles R. Thomas Jr., M.D.

Photo of Charles R. Thomas, Jr., M.D.
Faculty profile

Professor of Radiation Medicine School of Medicine

Accepting new patients

4.9 out of 5 (80 Ratings, 17 Comments)


  • Cancer

Special focus on

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


  • M.D., University of Illinois College of Medicine, 0 1985
  • Residency:

    • Radiation oncology, University of Washington, 1997
  • Fellowship:

    • Medical oncology, Rush University, 1991
  • Certifications:

    • American Board of Internal Medicine, 1989


Dr. Thomas trained in both medical oncology and radiation oncology. He joined the OHSU faculty in November 2005 as professor and chairman 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.

Dr. Thomas 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).

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  • English

Memberships and associations

  • American Society for Therapeutic Radiology and Oncology

Clinical Trials

The following clinical trials are currently accepting new participants:

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Patient Ratings

4.9 out of 5 (80 Ratings, 17 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.

Patient Comments

  • Dec 29, 2018

    I am made to feel a thoroughness and focus of my condition and its treatment.

  • Nov 21, 2018

    Very good visit with Dr. Thomas.

  • Nov 21, 2018

    Personable, attentive and knowledgeable. Answered all my questions and gave very reassuring answers.

  • Nov 18, 2018

    Everyone was very nice to me. And even though I got overlooked at radiation....the people where very apologetic and I didn't feel like a number.

  • Nov 17, 2018

    Extremely happy with the service we got from Dr. Thomas. He has an excellent bed side manner and he was very informative and did it in such a way that was completely understandable and we felt very comfortable with him. Thank you.

  • Oct 27, 2018

    Dr. Charles is, I can tell, a great, great doctor and fits right in perfect with the rest of my great cancer team doctors I got up on the hill with you people.

  • Oct 21, 2018

    He put a patient at ease and is very easy to understand about medical issues.

  • Sep 15, 2018

    He was very helpful in explaining things to me that I hadn?t heard before. This was the first time I had any contact with Dr. Thomas. He was very thorough.

  • Sep 15, 2018

    I saw him before 3 years ago and I trust him and his team.

  • Aug 25, 2018

    Well versed in my procedure. Spoke with knowledge and concern.

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