Stephen Bader MD

Stephen Bader MD

TEL: 503-215-6029
FAX: 503-513-3310

“Treatment starts with educating the patient and the family about their illness, the role of radiation therapy, what to expect, and stepping them through how my team is going to help them through this process and what to expect going forward.”

Dr. Bader graduated from the University of Washington and completed his internship and residency in internal medicine at the New England Deaconess Hospital, Harvard Medical School. He later finished his fellowship and became Chief Resident for the Joint Center for Radiation Therapy at Harvard Medical School. Dr. Bader is a member of several organizations, including the American Society for Clinical Oncology, the American Society for Therapeutic Radiation Oncology and the American Brachytherapy Society. Dr. Bader is also the former Medical Director of the Department of Radiation Oncology at Providence Health System and the Gamma Knife Center of Oregon. Dr. Bader focuses on breast cancer, lung cancer, head and neck malignancies, and other radiation oncology needs at The Oregon Clinic Radiation Oncology.

Other Activities

Clinical Instructor, Oregon Health Sciences University, Portland, OR, 1991-Present

Member, American Society for Clinical Oncology

Member, American Society for Therapeutic Radiation Oncology

Member, American Brachytherapy Society

Member, Oregon Radiation Oncology Society

Member, American Board of Radiology

Member, American Medical Association

Member, Oregon Medical Association

Member, Multnomah County Medical Association


Fellowship, Therapeutic Radiology, Joint Center for Radiation Therapy, Harvard Medical School, Boston, MA, 1991

Internship and Residency, Internal Medicine, New England Deaconess Hospital, Harvard Medical School, Boston, MA, 1985

MD, University of Washington School of Medicine, Seattle, WA, 1984

BS, University of Washington, Seattle, WA, 1980


Internal Medicine

Radiation Oncology


Medical Director, Department of Radiation Oncology, Providence Health System, 1998-2006

Medical Director, Gamma Knife Center of Oregon, 2001-2003


Portland Monthly Magazine, “Top Doctors,” 2009, 2016, 2022, 2024