David D. Clarke, MD is President of the Psychophysiologic Disorders Association. He is also Assistant Director at the Center for Ethics and Clinical Assistant Professor of Gastroenterology Emeritus both at Oregon Health & Science University (OHSU) in Portland, Oregon, USA. As Faculty Associate at Arizona State University and at the Cummings Graduate Institute for Behavioral Health Studies he teaches graduate courses on Psychophysiologic Medicine. He is also a Clinical Advisor to the Stress Illness Recovery Practitioners Association (U.K.) and a Clinical Lecturer with Pacific University in Oregon. His book, They Can’t Find Anything Wrong!,(Sentient Publications, 2007) was praised by a president of the American Psychosomatic Society as “truly remarkable.” He was also the lead editor for the professional textbook Psychophysiologic Disorders (KDP Publishing, 2019) which has sixteen contributors from five countries.
He is board-certified in Gastroenterology and Internal Medicine and practiced Gastroenterology in Portland from 1984 to 2009. During that time he diagnosed and treated over 7000 patients whose symptoms were not explained by diagnostic testing. In surveys of physicians by Portland Monthly magazine in the metropolitan area, Dr. Clarke was twice named one of the “Top Doctors” in his specialty. He has received numerous awards for patient care and is a member of the Academy of Psychosomatic Medicine, the American Psychosomatic Society and the Collaborative Family Healthcare Association for whom he co-Chairs the Special Interest Group on Medically Unexplained Symptoms.

Dr. Clarke is a graduate of Williams College (Phi Beta Kappa) and the University of Connecticut School of Medicine where he received the Mosby Award for Clinical Excellence. He completed internship and residency in Internal Medicine and fellowship in Gastroenterology at Harbor/UCLA Medical Center in Los Angeles. He has been a Visiting Professor at the Royal Children's Hospital in Brisbane, Australia and at Oxford University in England. He was the Ethics Director for his medical group from 2005-2008.

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