Assistant Professor of Surgery, University of Southern California (1996-2000)
Associate Professor of Surgery, University of Southern California (2000-2004)
Professor of Surgery, Harvard Medical School (2004-present)
Chief, Division of Trauma, Emergency Surgery, and Surgical Critical Care, Massachusetts General Hospital (2004-present)

Main clinical focus:

1. Abdominal and thoracic injuries
2. Surgical emergencies (perforations, bleeding, obstruction, and acute inflammation of the gastrointestinal tract)
3. Complex hernias

Fellow of the American College of Surgeons
Fellow of the Royal College of Surgeons of Edinburgh
Fellow of the Royal College of Physicians and Surgeons of Glasgow
Fellow of the American College of Critical Care Medicine
Author or co-author of over 250 publications, 4 books, 40 book chapters. Member of over 20 societies, including the American Surgical Association, Society of University Surgeons, Society of Clinical Surgery, American Association for the Surgery of Trauma, Society of Critical Care Medicine.
Chair, Education Committee and Member, Executive Committee, American College of Surgeons Committee on Trauma.