Medical Care Vol. 46, Issue 4, Pages 403-409 April 2008 ÌÇÐÄvlog¹ÙÍø Authors See citation below for complete author information. Joseph Newhouse John D. MacArthur Research Professor of Health Policy and Management Citation Newhouse, Joseph P. "Office Visit Copayments: Patient Knowledge, Response, and Communication with Providers." Medical Care 46.4 (April 2008): 403-409.