Gregory A. Brent, MD is Professor of Medicine and Physiology and Chief of the Division of Endocrinology, Diabetes and Metabolism, David Geffen School of Medicine at UCLA. He is Chair of the Department of Medicine, VA Greater Los Angeles Healthcare System. He received his clinical endocrinology training at Brigham and Women's Hospital in Boston and completed a research fellowship at Massachusetts General Hospital. His research focus is on studies on the molecular mechanisms of thyroid hormone action in metabolic regulation and neural differentiation, and the regulation of iodine transport in hormone-dependent cancers. He has conducted clinical research in thyroid disease in pregnancy and in chronic kidney disease patients. He is an elected member of the American Society for Clinical Investigation and Association of American Physicians. He is past chair of the National Institutes of Health, Molecular and Cellular Endocrinology Study Section and the Endocrine Merit Review Board for the Department of Veterans Affairs.  He has been on the editorial boards of Journal of Clinical Endocrinology and Metabolism, Molecular Endocrinology, Thyroid and Endocrinology. He is past Secretary/Chief Operating Officer and past President of the American Thyroid Association. He has been recognized with the American Thyroid Association Van Meter, Braverman, Ingbar, and Distinguished Service Awards, and the Endocrine Society Knoll Mentor Award.