Donald ThomasM.D., F.A.C.S.

  • Associate Professor of Surgery, Division of Cardiothoracic Surgery, School of Medicine


  • Cardiology
  • Cardiothoracic Surgery
  • Surgery

Special focus on

  • Aortic Surgery
  • Arrhythmia / Electrophysiology
  • Heart Surgery
  • Heart Transplant
  • Heart Valve
  • Surgery


Prior to OHSU, Dr. Thomas spent 20 years serving in the Chicago metropolitan area as a faculty member at Loyola University Medical Center. His legacy at Loyola includes an impressive track record of patient care and satisfaction, as well as his leadership in developing hospital research, quality and educational programs.

Dr. Thomas’s primary interest is adult cardiac care, with a special focus on valve repair, coronary revascularization and surgery for heart rhythm problems, such as atrial fibrillation.

Minimally invasive surgeries for valve disease have revolutionized the care of the oldest and sickest patients, previously treated through traditional open-heart surgery. Dr. Thomas has expertise in minimally invasive techniques, such as transcatheter aortic valve replacement, known as TAVR. Dr. Thomas helped start a busy percutaneous valve replacement program while at Loyola.

For patients who need traditional surgery, Dr. Thomas’ skills in repairing or replacing valves through small incisions can make hospital stays shorter, recovery easier, and cosmetic results better.


  • M.D., 1986, University of Michigan School of Medicine
  • Residency:

    • General surgery, Wayne State University Affiliated Hospitals, Detroit, Mich., 1991
  • Fellowship:

    • Senior research fellow, Cardiothoracic Surgery, University of Washington, Seattle, Wash., 1992
  • Certifications:

    • American Board of Thoracic Surgery, 1995
    • American Board of Surgery, 1992
    • National Board of Medical Examiners Diplomat


  • English

Memberships and associations

  • American Medical Association