1. Gail Wilensky is the John M. Olin Senior Fellow at Project HOPE and the chair of the Medicare Payment Advisory Commission (MedPAC). She served as administrator of the Health Care Financing Administration (HCFA) from 1990 to 1992. Joseph Newhouse is the John D. MacArthur Professor of Health Policy and Management at Harvard University and director of Harvard's Division of Health Policy Research and Education. He is the vice-chair of MedPAC and has written extensively on Medicare risk issues.