Bachelor, Yale University, 1971. Doctor of Medicine, Northwestern University, Chicago, 1975. Master of Arts (honorary), University Pennsylvania, Philadelphia, 1988.
Intern Hospital University Pennsylvania, 1975-1976, resident in neurology, 1976-1979. Fellow University Pennsylvania, Philadelphia, 1979-1982, NIMR, London, 1981-1982. Assistant professor departments neurology and microbiology University Pennsylvania, Philadelphia, 1982-1988, associate professor, 1988-1994, professor, 1994—2010, professor emeritus, since 2010.
Dean & vice president medical affairs, Joh P. Howe Distinguished chair University Texas Health Science Center, San Antonio, since 2010. Vice-chair research neurology department University Pa, 1998-1999, chair 1999—2010. Co-director Pennsylvania Center for Human Immunodeficiency Virus and Acquired Immune Deficiency Syndrome, 1998-2007, Pennsylvania Neurosci.
Center, 2006—2010; chairman board science counselors National Institute Neurological Diseases and Stroke, Bethesda, Maryland, 1993-1997, National Advisory Neurological Diseases and Stroke Council, 2004-2008.
Trustee Swarthmore Presbyterian Church, 1997-2000, session 2004-2007. Fellow: Philadelphia College Physicians. Member: Institute of Medicine, American Society Clinical Investigation, American Academy Neurology (member science issues committee 1985-1989, professional public issues committee 1987-1993), American Neurological Association (executive council 2001-2003, chair science progressive committee 2005-2007, vice president since 2008), Scroll & Key, John Morgan Society, Penn Club, Alpha Omega Alpha.
Married Barbara Jean Turner, June 23, 1979. Children: Genevieve Carre, Stephanie Katharine, Lisa Frances.