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Andrew Duffy

Associate Professor of Surgery (Gastrointestinal); Associate Surgical Chief, Digestive Health; Medical Director, Yale New Haven Health System Hernia Program

Contact Information

Andrew Duffy, MD, FACS, FASMBS

Patient Care Locations

Mailing Address

  • 40 Temple Street

    New Haven, CT, 06520-8062

    United States


Andrew Duffy, MD, is a Board Certified General Surgeon and is fellowship-trained in minimal access surgery. He is the Director of Bariatric and Metabolic Surgery for the Yale-New Haven Health System. His 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 with their stomach, intestines, colon, gallbladder, or other abdominal organs. He specializes in all type of primary and recurrent abdominal wall and hiatal hernias. He has extensive experience at surgically treating colon cancer and diverticulitis using laparoscopic techniques.

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

He specializes in laparoscopic gastrointestinal surgery; laparoscopic colon surgery for colon cancer or diverticulitis; 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); Inflammatory Bowel Disease (IBD); Crohn's disease; ulcerative colitis; appendicitis; gastroparesis.

Education & Training

  • MD
    University of Massachusetts Medical School (1996)
  • BS
    Boston College (1992)
  • Clinical Fellow
    Weill Medical College of Cornell University
  • Chief Resident
    University of Massachusetts Medical School
  • Resident
    University of Massachusetts Medical School
  • Board Certification
    AB of Surgery, Surgery, General (2004, recertified: 2013)

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