Barnhill is a life sciences government affairs executive with experience at Fortune 500 companies and a diverse set of healthcare coalitions and political campaigns at the state and federal levels. Most recently, he was named to The Hill’s Top Lobbyists in 2022. He previously served as Director of Federal Policy for GlaxoSmithKline. Barnhill is also Associate Professor of the Practice at New York University’s Wagner School of Public Service where he teaches health policy.  A graduate of Duke University and the University of North Carolina, Barnhill began his career on Capitol Hill before working at a national lobbying firm. Barnhill lives in Washington.