Dr. William Checkley is an Associate Professor of Medicine at the Johns Hopkins University School of Medicine and has a joint appointment in Department of International Health at the Bloomberg School of Public Health. Dr. Checkley also serves as the medical director for Johns Hopkins International. His areas of clinical expertise include epidemiology, pulmonary disease and critical care medicine. His research interests include the epidemiology of obstructive lung diseases in children and adults, studies of lung function and physiology, studies of the interactions between nutrition and infection, and critical care epidemiology—specifically studies of acute lung injury. Dr. Checkley earned his M.D. from Northwestern University and received his Ph.D. from Johns Hopkins University. He completed his internal medicine residency training at Emory University and fellowship training in pulmonary and critical care medicine at Johns Hopkins School of Medicine. Dr. Checkley has been recognized by the National Institute of Health with the 2007 Post-doctoral National Research Service Award and the 2009 Pathway to Independence Career Award. He is certified in pulmonary disease and internal medicine by the American Board of Internal Medicine.