Donald F. Slack, III, MD, is a physician with Pulmonary Medicine at GBMC and intensivist with GBMC’s critical care team. Board-certified in both Internal and Pulmonary Medicine, he earned his medical degree from the University of Maryland School of Medicine. Dr. Slack completed his residency at Christiana Care Health System in Newark, Delaware, including a year during which he acted as Chief Resident. He went on to complete his fellowship training in pulmonary diseases and critical care medicine at the University of Maryland Medical Center.