Engineering Assistant, E. G. & G., Inc. Albuquerque, NM: 1966
Associated Western Universities Fellow, Lawrence
Livermore Laboratory, Livermore, CA: 1971.
Teaching Assistant, Department of
Physics and Astronomy, University
of New Mexico, Albuquerque, NM: 1966-1973.
Member, Technical Staff, Sandia National Laboratory, Albuquerque, NM: 1974.
Assistant Professor, Department
of Neurology, University of Pittsburgh,
Pittsburgh , PA: 1981-1993.
Assistant Professor, Intelligent
Systems Program, University of Pittsburgh,
Pittsburgh, PA: 1987-1993.
Associate Professor, Department
of Neurology, University of Pittsburgh,
Pittsburgh, PA: 1993-1997.
Associate Professor, Intelligent
Systems Program, University of Pittsburgh,
Pittsburgh, PA: 1993-1997.
Senior Scientist, Pittsburgh Health Research Institute, Duquesne
University, Pittsburgh, PA: 1995-1998
Director, Valley Headache Center, Valley Neurology, Inc., Natrona
Heights, PA: 1997-1998.
Director, Willamette Valley Neurology, McMinnville, OR: 1998-Present.