Leadership

David J. Leffell, MD

Chief Executive Officer, YMG; Deputy Dean for Clinical Affairs; Section Chief and Professor of Dermatology&Surgery

As CEO of Yale Medical Group (YMG), David J. Leffell leads a rapidly expanding physician organization that combines warmth and compassion with cutting-edge diagnosis and treatment. Leffell is a practicing dermatologist who heads YMG’s dermatologic surgery practice, one of the busiest in the country. In addition to his role as CEO, he is the deputy dean for clinical affairs for Yale School of Medicine, the David Paige Smith Professor of Dermatology, and a professor of surgery, and has trained dozens of dermatologists entering the field. Born in Montreal, Canada, Leffell was educated at Yale, McGill and Cornell universities, and the University of Michigan.

Ronald J. Vender, MD 

Chief Medical Officer, YMG; Associate Dean for Clinical Affairs of Yale Medical Group (YMG)

As CMO of Yale Medical Group, Ronald J. Vender draws upon his knowledge of the local and regional medical community to play a key role in operating YMG as a seamlessly integrated group practice that achieves high satisfaction ratings from patients and referring physicians. He is a nationally recognized gastroenterologist who maintained a private practice for 26 years, and held leadership roles at several New Haven-area hospitals and national professional organizations. He is the recipient of regional and national awards for teaching and clinical excellence. Vender is a clinical professor and associate dean for clinical affairs at Yale School of Medicine, where he teaches medical students and residents in the field of digestive disease. He was educated at Harvard College and Yale School of Medicine.