David P. Calfee, MD, MS, is an infectious disease physician and healthcare epidemiologist who serves as Senior Science Advisor and the Director of the Healthcare-Associated Infection (HAI) Division within the Center for Quality Improvement and Patient Safety (CQuIPS) at the Agency for Healthcare Research and Quality (AHRQ). Prior to joining AHRQ, Dr. Calfee was a Professor of Medicine and Population Health Sciences at Weill Cornell Medicine, in New York, NY. He also served as the Chief Hospital Epidemiologist for NewYork-Presbyterian/Weill Cornell Medical Center. He has more than 20 years of experience in implementation and management of infection prevention and control programs and has conducted clinical research on healthcare-associated infections, antimicrobial resistance, and antimicrobial stewardship in a variety of healthcare settings. He currently also serves as the Editor-in-Chief of Infection Control & Hospital Epidemiology.