Chief, GI Division, The Johns Hopkins University School of Medicine
Dr. Mark Donowitz, MD, Emeritus Professor at The Johns Hopkins University School of Medicine. He is a scientist, GI clinician and administrator. His scientific focus has been regulation of intestinal Na+ absorption in normal digestive physiology and abnormalities that contribute to diarrheal diseases and use of that information to develop drug therapy for diarrheal diseases. His research group was the first to recognize the mammalian Na+/H+ exchanger (NHE) gene family, to clone the epithelial isoforms, NHE3 and NHE2, and to trace the evolutionary development of this gene family. He is a Past President of the American Gastroenterological Association (AGA) and served as President of the AGA Gastroenterology-Research Group. He has received the Distinguished Achievement Award and as well as the Davenport Memorial Prize from the American Physiology Society, the Career Achievement Award in Basic Science in Gastroenterology from the American Gastroenterological Association, is a Fellow of the American Association for the Advancement of Science, and a member of the American Society of Clinical Investigator and the Association of American Physicians.