Medical technologist New Jersey College Medicine and Dentistry, Newark, 1970-1972. Graduate student Rutgers University, New Brunswick, New Jersey, 1972-1977. Research fellow Research Institute of Scripps Clinic, La Jolla, California, 1977-1980.
Research associate Baylor College Medicine, Houston, 1980-1982, research instructor, 1982. Consultant Imré Corporation, Seattle, 1982-1983, research director, 1983-1989, vice president product development, 1989-1992, director device development, 1993, vice president Research and development, 1994-1996.