Scott I. Kahan, M.D., M.P.H., is an American physician, writer, and internationally recognized expert on obesity prevention and treatment. He is the director of the Strategies To Overcome and Prevent (STOP) Obesity Alliance, a nonprofit coalition of more than 70 consumer, provider, government, labor, business, health insurers and quality-of-care organizations and the director of the National Center for Weight and Wellness. His clinical practice and research addresses obesity prevention and treatment, chronic disease risk reduction, health behavior change in populations, and clinical aspects of weight management. His public policy work focuses on expanding access to care for obesity treatment services, addressing weight stigma, and training physicians in obesity treatment modalities.