Year(s) Academic Title Academic Department Academic Institute 1982-1986 Assistant Professor Medicine Harvard Medical School 1986-1996 Associate Professor Medicine Harvard Medical School 1996-2008 Professor Medicine Harvard Medical School 1998-2008 Mallinckrodt Professor Medicine Harvard Medical School 2008- Professor Internal Medicine University of Texas Southwestern Medical Center 2008- Doris and Bryan Wildenthal Distinguished Chair in Medical Science University of Texas Southwestern Medical Center 2008- Philip O’Bryan Montgomery, Jr., M.D. Distinguished Presidential Chair in Academic Administration University of Texas Southwestern Medical Center