Dr. Moellering is currently Physician-in-Chief and Chairman, Department of Medicine at the Beth Israel Deaconess Medical Center as well as President and CEO of the Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center.

Dr. Moellering received his MD cum laude from Harvard Medical School and served as a medical intern and resident at the Massachusetts General Hospital where he was also an infectious disease fellow prior to joining the staff of the Massachusetts General Hospital and the faculty of Harvard Medical School in 1970. He served as Chairman of the Department of Medicine at the Deaconess Hospital from 1981 through 1996. Dr. Moellering received an honorary Doctor of Science degree from Valparaiso University in 1980 and is also the recipient of the Garrod Medal from the British Society for Antimicrobial Chemotherapy, the Feldman Award from the Infectious Diseases Society of America of which he served as President from 1990 to 1991, and the Hoechst-Roussel Award from the American Academy of Microbiology. Dr. Moellering is a fellow of the Infectious Diseases Society of America and the American College of Physicians, and has been elected to membership in the American Society for Clinical Investigation and the Association of American Physicians. He is Editor-in-Chief Emeritus of Antimicrobial Agents and Chemotherapy, Editor of Infectious Diseases Clinics of North America, and Editor of the European Journal of Clinical Microbiology and Infectious Diseases. His major interests include the mechanism of action and mechanisms of resistance to antimicrobial agents.