Colleen L. Barry, PhD, MPP is Professor and Chair of the Department of Health Policy and Management at the Johns Hopkins Bloomberg School of Public Health. She conducts policy analysis and political communication research with a focus on vulnerable populations and often-stigmatized health conditions including mental illness, substance use and obesity. Much of her current research involves examining the implications of various aspects of the Affordable Care Act (ACA) on persons with mental illness or substance use disorders. She has also led studies examining public opinion and political persuasion in the context of childhood obesity, mental illness and gun policy. She teaches courses in health policy and in public opinion research. Dr. Barry received her PhD in health policy from Harvard University and her masters degree in public policy from the John F. Kennedy School of Government at Harvard.