1. Assistant Professor of Clinical Psychiatry and Director of Trauma Studies, Anxiety Disorders Clinic, New York State Psychiatric Institute (NYSPI), Columbia University College of Physicians and Surgeons.
2. Post-Doctoral Clinical Fellow, Assistant in Clinical Psychiatry, NYSPI, Columbia University College of Physicians and Surgeons.
3. Professor of Clinical Psychiatry, Columbia University College of Physicians and Surgeons; Chairman of the Research Committee, Columbia University Center for Psychoanalytic Training and Research.
4. Associate Professor of Psychiatry; Associate Director of Residency Training, NYSPI; Faculty, Columbia University Center for Psychoanalytic Training and Research.
5. Professor of Clinical Psychiatry, Columbia University College of Physicians and Surgeons; Director, Columbia University Center for Psychoanalytic Training and Research.