- Lawrence C. Kolb Professor and Chairman, Department of Psychiatry, Columbia University College of Physicians and Surgeons.
- Director, New York State Psychiatric Institute.
- Psychiatrist-in-Chief, Columbia University Medical Center if the New York-Presbyterian Hospital.
- President of the American Psychiatric Association (APA)
Focused on the neurobiology, pharmacology and treatment of schizophrenia and related psychotic disorders.