Professor Rossiter is an expert in health economics who has testified or served as an expert in the following areas: competition in the financing and delivery of health services; reimbursement economics, especially for Medicare, Medicare Advantage, and Medicaid; managed care organizations; prescription medicines; survey research; and health information analytics. Professor Rossiter is the former secretary of health and human resources for the Commonwealth of Virginia. In that role, he was responsible for over 15,000 employees in 13 agencies (including 10 state mental hospitals), brought major information technology projects in the Secretariat to national prominence, and made major reforms in Virginia Medicaid. He also served as deputy for policy to the Administrator of the Centers for Medicare and Medicaid Services (CMS). As deputy, he created and directed a new payment system for US hospitals under Medicare, was responsible for the CMS strategic plan, and formulated all agency policy initiatives through the federal legislative process.
Prior to joining the William & Mary faculty, Professor Rossiter was a professor of health administration at Virginia Commonwealth University. He served on the board of regents of the National Library of Medicine, National Institutes of Health; on the board of directors of AcademyHealth; and as chair of the board of directors of the Coalition for Health Services Research, the lobbying arm of AcademyHealth, during the passage of the Affordable Care Act. He has also served on numerous advisory groups, including the National Advisory Council for Healthcare Research and Quality, and is currently a trustee and chair of the Williamsburg Health Foundation. Professor Rossiter is the author or editor of 15 books, and the author of over 50 journal articles on health economics and the role of competition in the financing and delivery of health services.