Bachelor of Science from Massachusetts Institute of Technology, 1973; M.D. from the University of Miami, 1982; Ph.D. in astrophysics from the Harvard University, 1978; at the time of selection employed by Stanford Medical Center, Stanford, California; semi finalist in NASA group 10 selection; 1978-1980 Chaim Weisman Research Fellow in Theoretical Astrophysics, California Institute of Technology; 1984-- Member, NASA Life Sciences Strategic Planning Committee, National Academy of Sciences, Washington, DC; 1985-Consultant, President Reagan's National Commission on Space; 1985-Team member, longest civilian combined air-sea rescue mission in the history of the US Air force, Moffitt NAS, Mountain View, CA; 1988-1992 Resident in Cardiothoracic Surgery and Cardiac Transplantation, Stanford University Medical Center; 1990 Member, NASA Radiation Biology Review Team, Washington, DC; 2009-present Member, Research Committee, Congenital Heart Surgeons Society; 2004-present Professor of Surgery, University of Central Florida College of Medicine, Chief, Pediatric Cardiothoracic Surgery and Chairman, Department of Surgery, Arnold Palmer Hospital for Children.