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

4.8 out of 5 (112 Ratings, 27 Comments)


  • Cancer

Special focus on

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


  • M.D., University of Illinois College of Medicine 1985
  • 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)


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).

Read more


  • 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

4.8 out of 5 (112 Ratings, 27 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

  • May 04, 2019

    Everything has been perfect

  • Apr 15, 2019

    I think they could have done a better job at monitoring my side effects from the radiation and keeping me from having to go to the hospital with a 100.5 degree temperature.

  • Apr 13, 2019

    My experience at the OHSU radiation oncology headquarters exceeded all my expectations. I have nothing but respect and admiration for their kind professional help in the treatment of my cancer,from the office managers to the technicians,doctors and nurses. From beginning till the end their help inspired me. I am truely thankful.

  • Apr 08, 2019

    Dr. Thomas remembered me from 4 years ago. While my case is unique, I know I wasn't supposed to see him that day, but he saw my name and made sure he was the one to see me. He absolutely genuinely cares.

  • Mar 23, 2019

    Had a very good review of my treatment

  • Mar 06, 2019

    He was informative, pleasant. Just is the first visit so still don't know much.

  • Feb 28, 2019

    Dr. Thomas is thoughtful and attentive to his patients. He asks good questions and is knowledgeable. I feel very fortunate to have him as one of my physicians.

  • Feb 12, 2019

    Yes, my experience with him was very good. He listened to me, you know what I mean? Most doctors they listen at you or they talk at you. They don't talk to you. And he was very knowledgeable on my case, you know, so therefore I appreciated his candor and so forth, his knowledge on my particular situation, and so forth. Thank you.

  • Feb 03, 2019

    Yeah. Dr. Thomas was outstanding, he's very caring, very professional very smart, very helpful, and I just think the world of the doctor. I feel very fortunate to have Dr. Thomas helping me with radiation. So he's outstanding. I can't say enough good things about the doctor.

  • Jan 27, 2019

    Great, very professional.

  • Jan 27, 2019

    Dr. Thomas was competent informative and personable very intelligent man.

  • 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.

  • Aug 04, 2018

    Our experience was excellent. He did an outstanding job giving us the facts. His manner was wonderful so we couldn't ask for a better doctor.

  • Jul 16, 2018

    Yes, I was extremely pleased with my appointment up there, so yeah I'm really happy with her.

  • Jul 15, 2018

    He explained things well and took the time to listen

  • Jul 10, 2018

    He was Dr. Tom was very informative and very up front with me and I liked him a lot and I trusted my life to be in his care. Thank you bye.

  • Jun 22, 2018

    I'd highly recommend him to head this department.

  • Jun 05, 2018

    excellent in every way