New England Journal of Medicine Vol. 368, Issue 16, Pages 1465-1468 April 18, 2013 View on Publisher Site HKS Authors See citation below for complete author information. Joseph Newhouse John D. MacArthur Professor of Health Policy and Management, HKS and HSPH; Professor of Health Care Policy, HMS Citation Newhouse, Joseph P., and Alan M. Garber. "Geographic Variation in Medicare Services." New England Journal of Medicine 368.16 (April 18, 2013): 1465-1468.