Mitchell A. Lazar, MD, PhD, is the Willard and Rhoda Ware Professor of Diabetes & Metabolic Diseases at the University of Pennsylvania Perelman School of Medicine. He was an undergraduate at MIT, received his MD/PhD from Stanford, and trained in internal medicine and endocrinology at Brigham and Women’s Hospital and MGH before joining the Penn faculty, where he has served as Chief of the Division of Endocrinology, Diabetes, and Metabolism and is Founding Director of the Institute for Diabetes, Obesity and Metabolism. Dr. Lazar’s groundbreaking research has focused on genomic mechanisms by which nuclear receptors control circadian rhythms and metabolism, and how these impact metabolic diseases such as obesity, diabetes, and fatty liver. He has received numerous awards including the Stanley Korsmeyer Award of the ASCI and the Fred Conrad Koch Lifetime Achievement Award of the Endocrine Society. He is a member of the ASCI and AAP, and was AAP President in 2021. Dr. Lazar is also an elected member of the National Academy of Medicine, the American Academy of Arts and Sciences, and the National Academy of Science.