Dennis A. Ausiello, MD is the Jackson Professor of Clinical Medicine at Harvard Medical School and the Physician-in-Chief of the Department of Medicine at Massachusetts General Hospital (MGH). Previously, Dr. Ausiello served as Chief of the MGH Renal Unit from 1983-1996 and oversaw its development into one of the most sought after research and training programs in the world. He has made a substantial contribution to knowledge of epithelial biology in the areas of membrane protein trafficking, ion channel regulation and signal transduction, and has published over 100 papers, chapters and textbooks. Dr. Ausiello currently serves as the co-editor of Cecil's Textbook of Medicine (Elsevier), now in its 22nd edition. A nationally-recognized leader in academic medicine, Dr. Ausiello was elected to the Institute of Medicine of the National Academy of Sciences in 1999 and the American Academy of Arts and Sciences in 2003.