This week, Mark and Margaret speak with Dr. Benjamin Sommers. Dr. Sommers is a health economist and physician whose primary research interests are the uninsured, Medicaid, and medical decision-making. He was honored with the 2006 National Dissertation Award by AcademyHealth, a preeminent national association of health policy and health services researchers. Dr. Sommers also served as a Senior Advisor in the Office of the Assistant Secretary for Planning and Evaluation in the U.S. Department of Health and Human Services from 2011-2012. His current research projects focus on barriers to health care access among low-income adults, Medicaid policy, and national health reform.