Dr. Yaggi is an Associate Professor of Medicine at the Yale University School of Medicine and Director of the Yale Program in Sleep Medicine. He is board certified in Internal Medicine, Pulmonary Medicine, Critical Care, and Sleep Medicine. He is a Principal Investigator at the national VA Clinical Epidemiology Research Center. His research interest is the clinical epidemiology of sleep-disordered breathing, with a focus on the diverse health implications of sleep apnea and an emphasis on informing clinical care. Within this larger domain, his work has focused on 3 specific topics: sleep apnea as a risk factor for adverse cardiovascular and metabolic health outcomes; prognostic factors for adverse cardiovascular and metabolic health outcomes in patients with sleep-disordered breathing; and the impact of diagnosing and treating sleep apnea (using home-based strategies) on cardiovascular risk.