Mark L. Zeidel, Herrman L. Blumgart Professor of Medicine at Harvard Medical School and Chair of the Department of Medicine at Beth Israel Deaconess Medical Center in Boston, is a widely respected scientist, clinician and teacher known for his NIH-funded research in epithelial biology and water transport. He came to Beth Israel Deaconess Medical Center in July 2005 from the University of Pittsburgh School of Medicine where his tenure spanned 12 years, first serving as Chief of the Renal and Electrolyte Division of the Department of Medicine, and then, starting in 1999, as the Jack D. Myers Professor and Chair of the Department of Medicine. A summa cum laude graduate of Yale College, he received his medical degree from Columbia University College of Physicians and Surgeons, where he was elected to the national honor medical society, alpha omega alpha. He then served as an intern and resident in Medicine at Brigham and Women's Hospital in Boston, followed by a renal fellowship at the same institution. He has served on many regional and national committees and is recognized by his peers for his numerous accomplishments, including elected membership to the American Society of Clinical Investigation and the Association of American Physicians.