Geoffrey Williams is Professor of Medicine, with secondary appointments in Psychiatry and Psychology at the Healthy Living Center, part of the University of Rochester’s Center for Community Health. Dr. Williams has an M.D. from Wayne State University and a Ph.D. in Health Psychology from the University of Rochester. He completed his residency in Internal Medicine in the Associated Hospital Program at the University of Rochester, and fellowships in General Internal Medicine, and Biopsychosocial Medicine. Dr. Williams has over twenty years of practice experience in academic internal medicine and training as a health psychologist. He has contributed to the development of the Self-Determination Theory (SDT) model for health behavior change; focusing much of his research career on SDT and its application in interventions for health-related motivation, tobacco dependence treatment, diabetes self-management, adherence to medications, and other health behaviors that are difficult to change. He has been the recipient of numerous grants including research support from the National Cancer Institute, the National Institute on Drug Abuse, the National Institute of Diabetes and Digestive and Kidney Diseases, Small Business Innovation Research and the National Institute of Mental Health. He has published over 90 peer-reviewed articles as well as books and numerous book chapters. He has also presented at over 50 major national professional meetings.