John W. Barnhill, MD is DeWitt Wallace Senior Scholar and Professor of Clinical Psychiatry and Medical Ethics at Weill Cornell Medicine.Dr. Barnhill is Vice Chair for Psychosomatic Medicine within the Department of Psychiatry, where he oversees the team of psychiatrists, psychologists, nurse practitioners, psychiatric residents, medical students, and other trainees who work at the juncture between mental health and medical illness. This team performs psychiatric consultations throughout NYPH/Weill Cornell, NYPH/Lower Manhattan, and the Hospital for Special Surgery. Members of the team spearhed liaison work with three transplant services (heart, kidney, and liver) as well as oncology and rheumatology.  Other members of the team have developed a collaborative care outpatient service for Weill Cornell Medicine and consult for Cornell Internal Medicine Associates (CIMA). All members of the psychosomatic medicine team are actively involved in teaching and clinical investigation.Dr. Barnhill is a site director for the NYPH/Weill Cornell Medicine geriatric psychiatry fellowship and was, until recently, site director for the Psychosomatic Medicine fellowship that is run jointly at NYPH/WCMC and Memorial Sloan-Kettering Cancer Center. He is also a Lecturer in Psychoanalysis at the Columbia University Center for Psychoanalytic Training and Research.Dr. Barnhill is Director of the House Staff Mental Health Service at NYPH/Weill Cornell Medicine. In this role, he works with the NYPH Graduate Medical Education office and provides confidential consulting and referral services to medical and surgical trainees.Dr. Barnhill served on the Medical College's General Faculty Council for a dozen years, including a term as chair and 6 years as senior councilor. He has a secondary appointment in Medical Ethics within the Department of Medicine and serves on the NYPH/WCMC Ethics Committee. He has served as the board president of the Society for Liaison Psychiatry.Dr. Barnhill serves on the editorial board of American Psychiatric Publishing (APP), the book publishing arm of the American Psychiatric Association.He has written or edited five books about psychiatry. His books have been translated into ten languages. In addition to reviewing for a wide variety of journals, Dr. Barnhill edits the Anxiety Disorders section of the Merck Manual.Dr. Barnhill has taught or consulted in the Middle East, Africa, Europe, and Asia. He directs the psychiatry section of the annual Salzburg Weill Cornell Seminars, which are focused on the continuing education of young physicians from developing countries, particularly in Eastern Europe. He serves on the WCMC Faculty Committee for the Weill Bugando Medical College in Mwanza, Tanzania. To further these efforts, he serves on the International Psychoanalytic Association's and the American Psychiatric Association's Committees to the United Nations and on the United Nations Commission on the Status of Women.Dr. Barnhill has continuously maintained an outpatient clinical practice since 1989.