Khalil Diab, MD ATSF is a pulmonologist in the Division of Pulmonary and Critical Care Medicine as an Associate Professor of Medicine at the GW School of Medicine & Health Sciences. Dr Diab completed his B.S. in Chemistry at the American University of Beirut in Beirut, Lebanon. He then obtained his medical degree from the American University of Beirut in 2002. Dr Diab completed 1 year of internal medicine internship at the American University of Beirut Medical Center, followed by an internship and residency at the University of Iowa Hospitals and Clinics. He completed his pulmonary and critical care fellowship at the Indiana University School of Medicine in 2009.