Bachelor of Science, Biomedical Engineering, University of Illinois, 1979; Master of Science, Biomedical Engineering, University of Illinois, 1981; Master of Science, Aerospace Medicine, Wright State University, 1991; MD, Rush University, 1985;; Semifinalist bei der Astronautenauswahl der NASA-Gruppe 16; 11/2004 bis 9/2013 NASA Flight Surgeon; derzeit Associate Professor and Director, Aerospace Medicine Residency Program, University of Texas Medical Branch at Galveston.