Our Physicians

Here at Radiology Specialists of the Northwest (RSN)in Portland, Oregon, we are dedicated to our patients' good health. In fact, we've earned a reputation among over 650 referring physicians for high-quality care and excellent customer service. We have access to the full spectrum of medical imaging modalities , and our board certified radiologists – many of whom have completed subspecialty fellowship training – provide complete and accurate reports promptly.

Our radiologists work with our highly skilled medical staff to provide both patient and referring physician the best personal attention and service. To learn more about each member of our medical team, please click on the physicians' names below.

Nuclear medicine

Alexandru Bageac, MD, MBA	Ronald Divine, MD

Thoracic Imaging

Thomas Warfel, MD, PhD

Interventional radiology

Mark Gibson, MD	Dana Mann, MD	Dave Vegas, MD

Body imaging

Michael Chan, MD	Stacy Yamasaki, MD

Diagnostic imaging

Ronald Larson, MD	Matthew Orth, DO	Robert Stephenson, MD

Neuroradiology

Ronald Kizziar, MD, MPH	Richard Koesel, MD	James Tsai, MD

Musculoskeletal radiology

Thomas Brown, MD	James Hasenauer, MD	J. Carmen Timberlake, MD

Women's imaging

Deborah Arnold, MD	Valerie Hunter, MD	Norna Karp MD	Michael Neuman, MD	Richard Vigran, MD

For additional information on Radiology Specialists of the Northwest or to schedule your personal appointment, call us today at (503) 731-2900.