Duke University Medical School (1982)
The Univeristy of Minnesota General Surgery (1982-1990)
Brigham and Women's Hospital, Harvard Medical School Cardiothoracic Surgical Residency (1992-1994)
Brigham and Women's Hospital, West Roxbury, VA Medical Center, Cardiothoracic Surgery (1994-1995)
The University of Minnesota Ph.D.(1996)
Asst Prof of Surgery, Cardiothoracic Surgery, The U. of Iowa College of Medicine (1995-1998)
Associate Prof of Surgery, Cardiothoracic Surgery, The U. of Iowa College of Medicine (1998 - 2004)
Professor of Surgery, Cardiothoracic Surgery, The University of Iowa (2004)
Professor, City of Hope National Medical Center and Beckman Institute (2004-2010)
Professor, University of Texas, Southwestern (2011-Present)