Dr. Atwood graduated from the University of Alabama School of Medicine in 1988, where he also completed his medical internship and residence. He then moved to the University of Pittsburgh to complete a pulmonary and critical care medicine fellowship and an additional year of sleep medicine training. He joined the division of Pulmonary, Allergy and Critical Care Medicine in 1995. Dr. Atwood was the director of the pulmonary section at the VA Pittsburgh Healthcare System (VAPHS) from 1997-2003. He also co-founded and has been the chief of the sleep laboratory at the VAPHS since 1996. In this role he has fostered its growth to be one of the largest in the VA system. In July, 2008 Dr. Atwood was appointed the Assistant Chief of Medicine at the VAPHS.