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Dr. ChiassonPatrick Chiasson, MD, FACS 

established the Surgical Weight Loss Program at Northwest Medical Center in Tucson, AZ in 2002. He is the past President of the Arizona Chapter of the American Society for Metabolic & Bariatric Surgery. Dr. Chiasson migrated to Tucson, from Canada and received his medical education at McGill University, a Master’s degree from the Institute for the History of Medicine at the Johns Hopkins University, and his general surgical training at Dalhousie University. He then went on to complete his sub-specialty training in advanced laparoscopic surgery at the University of Toronto’s highly regarded Center for Minimally Invasive Surgery. He has numerous publications to his credit that address such issues as Minimally Invasive Surgery techniques and outcomes, Health Policy, Medical Ethics and Health Law. His particular surgical interests include the application of advanced laparoscopic and endoluminal techniques to manage colorectal diseases, solid organ diseases, and conditions involving the esophagus and stomach including the surgical management of morbid obesity.



Dr. BurpeeStephen Burpee, MD, FACS

joined Southern Arizona Center for Minimally Invasive Surgery as a partner in 2003, contributing to the development of the Surgical Weight Loss Program at Northwest Medical Center in Tucson, AZ. He currently serves as the Medical Director of Bariatric Services at Northwest Medical Center. He is also a native of Canada and received his medical degree from the University of Western Ontario. Dr. Burpee’s surgical residency was performed t Lenox Hill Hospital in New York City and his subsequent fellowship in advanced laparoscopic surgery was performed at the University of Toront. He also obtained additional training in laparoscopic bariatric surgery at the University of Pittsburgh Medical Center and spent time as  research fellow in the department of Minimally Invasive Surgery at Mount Sinai Hospital in New York City. He has numerous publications in the area of Minimally Invasive Surgery and has a spec9ial interest in diseases of the gastroesophageal junction, colorectal disease and the surgical management of obesity.





Renee Corrigan, PA-C

Renee Corrigan, PA-C Physician Assistant has been assisting Drs. Chiasson and Burpee in the operating room for more than 10 years. She moved to Tucson, AZ from Lincoln, NE in 1995. She graduated Summa Cum Laude from Midwestern University’s Physician Assistant program in 2002. Prior to joining our team in early 2005, Ms. Corrigan worked as a “hospitalist” at Tucson Medical Center for almost three years. Her experience as a hospitalist and more than a decade of first assisting our surgeons has made Ms. Corrigan an integral part of our surgical team.