Bachelor of Science, California Institute of Technology, 1973. Doctor of Philosophy, Massachusetts Institute of Technology, 1977.
Post doctoral fellow, U. Colorado, Boulder, 1977-1979; research associate, Massachusetts Institute of Technology, Cambridge, 1979-1982; assistant professor, State University of New York, Stony Brook, 1982-1989; associate professor, State University of New York, Stony Brook, since 1989.
Member American Society Cell Biologists.
Married Karen Stone (deceased June 1988). Married June Colleti. Children: Alex, Sarah.