Peter F. Crookes

Associate Professor of Surgery

Areas of treatment:

Barrett's Esophagus
Hiatal Hernia
Cancer of Esophagus and Stomach
Swallowing Disorders
Morbid Obesity
Including Diabetes Mellitus and Hyperlipidemia
Incisional Hernia


  • Bariatrics/Weight Management
  • Foregut Surgery


  • Department of Surgery


  • English

Peter F. Crookes, MD

Associate Professor of Surgery

Practicing locations:

  • Keck Hospital of USC
  • USC Healthcare Center 4

About this doctor:

Peter F. Crookes, M.D., associate professor of Surgery, is the director of the USC Bariatric Program at Keck Hospital of USC, and associate chief of the foregut service at Los Angeles County+USC Medical Center. He also has a special interest in medical and surgical education and is the recipient of numerous awards from the department and the Keck School of Medicine for his contributions in that area. He is the director of the Student Clerkship for the Keck School of Medicine. His research interests include a wide variety of problems related to morbid obesity and diseases of the esophagus and stomach. He has published extensively on the metabolic changes associated with different types of bariatric surgery, as well as the physiology of GERD and achalasia. He also has a lively interest in the history of surgery and frequently lectures and writes on historical topics. His CV includes over 80 peer-review publications in addition to 30 chapters and numerous invited lectures and presentations in these areas. Dr. Crookes received his medical degree from Queen’s University in Belfast, Northern Ireland, where he also completed a specialized qualification in pathology. During his internship and residency at Royal Victoria Hospital, Dr. Crookes gained extensive exposure to surgery, training from 1978 to 1989 before traveling to Melbourne, Australia, where he was a research fellow in the Department of Surgery at St. Vincent’s Hospital. In 1990, Dr. Crookes traveled to Creighton University in Omaha to serve as a research fellow with Tom R. DeMeester, M.D. He completed his fellowship at USC, and joined the faculty in 1994.


Doctor of Medicine, Medicine, Queen's University, North Ireland, 1978


Royal Victoria Hospital Belfast N. Ireland, Surgery, 1978 - 1979


Royal Victoria Hospital, North - General Surgery, 1978 - 1989


St. Vincent's Hospital, Australia, 1990 - 1990
University of Southern California - Esophageal Surgery, 1990 - 1992

Professional society memberships:

British Medical Association
Royal College of Surgeons of England
American College of Surgeons
Dysphagia Research Society
Society for Surgery of the Alimentary Tract
Society of American Gastrointestinal and Endoscopic Surgeons
Society of Critical Care Medicine
New York Academy of Sciences
American College of Surgeons
Alpha Omega Alpha
American Association for the Advancement of Science
American Society for Bariatric Surgery
Association for Surgical Education
North American Association for the Study of Obesity
Pacific Coast Surgical Association
Surgical Biology Club III
Los Angeles Surgical Society
Society of Graduate Surgeons


Excellence in Teaching Award for Resident Bedside Teaching, University of Southern California, 1993
CJ Berne award for excellence in teaching, 1996
USC School of Medicine award for outstanding teaching in Year III, 1997
Kaiser Permanante Excellence in Teaching Award for Clinical years, USC School of Medicine, May 1998
Elected to AOA honor society, USC School of Medicine, 1998
USC Department of Surgery Award for Faculty Teacher of the Year 1997-8
USC Department of Surgery Award for Outstanding Teacher in the Clinic 1997-8
Jeanine Chalabian award for excellence in teaching, USC Department of Surgery, 1998
Kaiser Permanente Excellence in Teaching Award, USC School of Medicine 1999
Faculty award for excellence in teaching, USC School of Medicine, 1999
Kaiser Permanente Excellence in Teaching Award, USC School of Medicine, 2001
Leonard Tow award for Humanism in Medicine 2008
Dr. Crookes was voted a Top Doctor by Pasadena Magazine in 2011.