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Andrew Duffy

Associate Professor of Surgery (Bariatric, Minimally Invasive); Associate Surgical Chief, Digestive Health; Medical Director, Yale New Haven Health System Hernia Program; Interim General Surgery Residency Program Director, Surgery

Contact Information

Andrew Duffy, MD, FACS, FASMBS

Patient Care Locations

Mailing Address

  • Bariatric & Minimally Invasive Surgery

    333 Cedar Street, PO Box 208062

    New Haven, CT 06510

    United States


Andrew J. Duffy, MD, FACS, FASMBS is a Board Certified General Surgeon and is fellowship-trained in minimal access surgery. He is the Associate Surgical Chief of the Digestive Health Service line and the Medical Director of the Hernia Center for Yale-New Haven Health System. He has additional subspecialty certification through the American Board of Surgery in Metabolic and Bariatric Surgery. He offers minimally invasive surgery of the abdomen and GI tract, including laparoscopic and robotic techniques.

Dr. Duffy has a long history in surgical education. He has developed simulator programs and utilized other technology to help develop the Yale surgical residents and fellows into top Minimally Invasive and Robotic Surgeons

He is currently the interim Program Director for the General Surgery Residency Program at Yale

His clinical goal is to offer the most effective surgery with the least recovery time and post-operative discomfort.

Dr. Duffy is dedicated to helping individuals with acute and chronic issues related to hernias or with their stomach, intestines, gallbladder, or other abdominal organs. He specializes in all type of primary and recurrent abdominal wall. He has extensive experience at surgically treating hernia surgery-related complications, including mesh problems.

He also offers minimally invasive techniques for correcting hiatal hernias, GERD, acid reflux, paraesophageal hernias, complications of prior stomach and hiatal hernia surgery, achalasia and other swallowing disorders.

He also specializes in laparoscopic and robotic procedures for obesity, including gastric bypass, sleeve gastrectomy, adjustable gastric banding and revision of prior bariatric surgery.

He specializes in laparoscopic gastrointestinal surgery; laparoscopic bariatric surgery for morbid obesity; laparoscopic gastric bypass surgery; laparoscopic adjustable gastric banding; laparoscopic sleeve gastrectomy; revisional bariatric surgery; laparoscopic surgery for reflux and achalasia; laparoscopic Nissen, laparoscopic Heller myotomy; laparoscopic splenectomy; laparoscopic paraesophageal hernia repair; laparoscopic repair of abdominal-wall hernias; laparoscopic repair of inguinal hernias; gall bladder; gall stones; cholecystectomy; gall stone pancreatitis; Gastroesophageal Reflux Disease (GERD); gastroparesis. Robotic surgery

Education & Training

  • Clinical Fellow
    Weill Medical College of Cornell University (2004)
  • Chief Resident
    University of Massachusetts Medical School (2003)
  • Resident
    University of Massachusetts Medical School (2002)
  • MD
    University of Massachusetts Medical School (1996)
  • BS
    Boston College (1992)

Honors & Recognition

AwardAwarding OrganizationDate
New York Magazine Best Doctors 2012, New York Magazine2017
Connecticut Magazine Top Docs 2017, Connecticut Magazine2017
Connecticut Magazine Top Docs 2016Connecticut Magazine2016
Connecticut Magazine Top Docs 2015Connecticut Magazine2015

Departments & Organizations