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

Charles R. Thomas Jr., M.D.

    • Professor of Radiation Medicine School of Medicine
    • Biomedical Informatics Graduate Program School of Medicine

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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  • 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

Memberships and associations

  • American Society for Therapeutic Radiology and Oncology


  • "Does a fine line exist between regional and metastatic pelvic lymph nodes in rectal cancer-striking discordance between national guidelines and treatment recommendations by US radiation oncologists." Journal of Gastrointestinal Oncology  In: , Vol. 9, No. 3, 01.06.2018, p. 441-447.
  • "Preferential use of imaging modalities in staging newly diagnosed rectal cancer : A survey of US radiation oncologists." Journal of Gastrointestinal Oncology  In: , Vol. 9, No. 3, 01.06.2018, p. 435-440.
  • "microRNA-451a regulates colorectal cancer proliferation in response to radiation." BMC Cancer  In: , Vol. 18, No. 1, 517, 03.05.2018.
  • "Lung cancer specialists' opinions on treatment for stage I non-small cell lung cancer : A multidisciplinary survey." Advances in Radiation Oncology In: , Vol. 3, No. 2, 01.04.2018, p. 125-129.
  • "Evaluation of the Relative Citation Ratio, a New National Institutes of Health-Supported Bibliometric Measure of Research Productivity, among Academic Radiation Oncologists." Journal of the American College of Radiology In: , 01.01.2018.
  • "In Regard to Chapman and Jagsi." International Journal of Radiation Oncology Biology Physics In: , Vol. 100, No. 1, 01.01.2018.
  • "Prophylactic Cranial Irradiation for Limited-Stage Small-Cell Lung Cancer : Survey of US Radiation Oncologists on Current Practice Patterns." Clinical Lung Cancer  In: , 01.01.2018.
  • "Timing of Thoracic Radiation Therapy With Chemotherapy in Limited-stage Small-cell Lung Cancer : Survey of US Radiation Oncologists on Current Practice Patterns." Clinical Lung Cancer  In: , 01.01.2018.
  • "Patient-clinician communication among patients with stage I lung cancer." Supportive Care in Cancer  In: , 05.12.2017, p. 1-9.
  • "Allogeneic stem cell transplantation in fully MHC-matched Mauritian cynomolgus macaques recapitulates diverse human clinical outcomes." Nature Communications In: , Vol. 8, No. 1, 1418, 01.12.2017.
  • ""It wasn't as bad as i thought it would be" : A qualitative study of early stage non-small cell lung cancer patients after treatment." BMC Research Notes In: , Vol. 10, No. 1, 642, 29.11.2017.
  • "Burnout Evaluation of Radiation Residents Nationwide : Results of a Survey of United States Residents." International Journal of Radiation Oncology Biology Physics  In: , Vol. 99, No. 3, 01.11.2017, p. 530-538.
  • "PRADO : A Palliative Care Model for Every Radiation Oncology Practice." International Journal of Radiation Oncology Biology Physics In: , Vol. 99, No. 3, 01.11.2017, p. 518-519.
  • "Is it time to convert the frequency of radiotherapy in small-cell lung cancer?" The Lancet Oncology In: , Vol. 18, No. 10, 01.10.2017, p. e554.
  • "Emotional Intelligence and Burnout in Academic Radiation Oncology Chairs." Journal of Healthcare Management In: , Vol. 62, No. 5, 01.09.2017, p. 302-313.
  • "Potential of prospective particle therapy trials to increase the therapeutic ratio for locally advanced lung cancer." JAMA Oncology In: , Vol. 3, No. 8, e172165, 01.08.2017.
  • "Understanding and Resetting Radiation Sensitivity in Rectal Cancer." Annals of Surgery In: , 24.07.2017.
  • "The IASLC Lung Cancer Staging Project : External Validation of the Revision of the TNM Stage Groupings in the Eighth Edition of the TNM Classification of Lung Cancer." Journal of Thoracic Oncology  In: , Vol. 12, No. 7, 01.07.2017, p. 1109-1121.
  • "Single-fraction radiotherapy and early subjective improvement in pain." JAMA Oncology In: , Vol. 3, No. 7, 01.07.2017.
  • "Female Representation in the Academic Oncology Physician Workforce : Radiation Oncology Losing Ground to Hematology Oncology." International Journal of Radiation Oncology Biology Physics  In: , Vol. 98, No. 1, 01.05.2017, p. 31-33.
  • "Does sex influence publication productivity among colorectal surgeons participating in fellowship training programs?" Diseases of the Colon and Rectum In: , Vol. 60, No. 5, 01.05.2017, p. 537-543.
  • "Stereotactic body radiotherapy for patients with hepatocellular carcinoma and intermediate grade cirrhosis." The Lancet Oncology In: , Vol. 18, No. 4, 01.04.2017, p. e192.
  • "Association of preresidency peer-reviewed publications with radiation oncology resident choice of academic versus private practice career." Practical Radiation Oncology In: , 28.02.2017.
  • "Optical Coherence Tomography Angiography Characteristics of Iris Melanocytic Tumors." Ophthalmology  In: , Vol. 124, No. 2, 01.02.2017, p. 197-204.
  • "Neutrophil-to-Lymphocyte and Platelet-to-Lymphocyte Ratios can Predict Treatment Response to Neoadjuvant Therapy in Esophageal Cancer." Journal of Gastrointestinal Surgery In: , 12.01.2017, p. 1-7.
  • "Neuroinflammatory and cognitive consequences of combined radiation and immunotherapy in a novel preclinical model." Oncotarget  In: , Vol. 8, No. 6, 2017, p. 9155-9173.
  • "Impact of US immigration ban on oncologists and patients : Oncology knows no borders." JAMA Oncology In: , Vol. 3, No. 5, 2017, p. 591.
  • "Determining penetration of prostate-specific antigen screening recommendations." JAMA Oncology  In: , Vol. 3, No. 5, 2017, p. 707.
  • "The pervasive crisis of diminishing radiation therapy access for vulnerable populations in the United States, part 1 : African-American patients." Advances in Radiation Oncology In: , 2017.
  • "The Relationships Between Spiritual Well-Being, Quality of Life, and Psychological Factors Before Radiotherapy for Prostate Cancer." Journal of Religion and Health In: , 30.12.2016, p. 1-10.

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