Bachelor in Physics, University of Chicago, 1982; Master of Science in Physics, University of Illinois, 1984; Doctor of Philosophy in Physics, University of Illinois, 1988.
Research fellow in chemistry California Institute of Technology, Pasadena, 1988-1990. Postdoctoral fellow theoretical division Las Alamos (New Mexico) National Laboratory, 1990-1993. Senior staff fellow physical science laboratory Computer Research and Technology division National Institutes of Health, Bethesda, Maryland, since 1993.
Member Santa Fe (New Mexico) Institute, 1991-1994.