Consultant, Institute for Healthcare Quality.  1996-2003 Consultant, Psychotherapeutic Medication Development Program, NIMH.  1992-96 Consultant, National Institute on Drug Abuse.  1990-2003 CPMC Clinical Research & Development Fund Committee.  1992-2003 Chairman, NIDA/VA Medication Development Review Group.  1991-96 Senior Science Advisor, ADAMHA.  1989-1990 Consultant, ADAMHA.  1988-1989 Chairman, Research Advisory Council.  Texas Department of Mental Health and Mental     Retardation.  1983-1985 Consultant, Long Island Jewish-Hillside Medical Center.  1976-1985 Full Attending Psychiatrist, Queens Hospital Center.  1972-1985 Lecturer, Columbia University.  1976-1978 Visiting Professor, University of Hawaii.  1977, 1985, 1986 & 1993 Professor of Psychiatry, State University of New York College of Medicine, Stony Brook, NY.     1972-1976 Visiting Professor of Psychiatry, University of Auckland, New Zealand. 1975 Psychiatrist-in-Chief, Queens Hospital Center.  1970-1971 Director of Research & Evaluation, Department of Psychiatry, Long Island Jewish-Hillside Medical    Center.  1972-1976 Chairman, Committee on Research & Publication.  Long Island Jewish-Hillside Medical Center.    1972-1975 Medical Director for Evaluation, Hillside Hospital.  1970-1971 Director of Research, Hillside Hospital.  1965-1970 Senior Staff Psychiatrist (Research), Hillside Hospital.  1965 NIMH Mental Health Career Investigator, Hillside Hospital.  1961-1964 Research Associate, Hillside Hospital.  1959-1964 Research Associate, Creedmoor Institute for Psychobiologic Studies.  1957-1959 Candidate, New York Psychoanalytic Institute.  1957-1961