Andrew Duffy, MD, FACS, FASMBS

Associate Professor of Surgery (Gastrointestinal); Director, Bariatric and Metabolic Surgery Yale-New Haven Health System

Physician Biography

Dr. Duffy is the Director of Bariatric and Minimally Invasive Surgery at Yale New Haven Health System and an Associate Professor of Surgery at Yale University School of Medicine. He received his medical degree from the University of Massachusetts Medical School in 1996, and completed a general surgery residency at the UMass-Memorial Surgical Residency Program in 2003. Dr. Duffy completed a Fellowship in Minimally Invasive Surgery at Cornell and Columbia Medical School in New York in 2004. He has been a full-time faculty member of the Yale University School of Medicine since 2004. He specializes in advanced minimally invasive, bariatric, hernia, and gastrointestinal surgery. He has a special clinical interest in complex recurrent hernia repair, abdominal wall reconstruction, and complex foregut surgery (achalasia, paraesophageal hernias, GERD)..

Clinical Interests

  • Anastomosis, Roux-en-Y
  • Appendectomy
  • Barrett Esophagus
  • Biliary Tract
  • Cholecystectomy
  • Cholecystostomy
  • Choledochostomy
  • Colectomy
  • Colon
  • Crohn Disease
  • Diverticulitis
  • Esophageal Achalasia
  • Esophageal Stenosis
  • Esophagitis
  • Esophagogastric Junction
  • Gallbladder
  • Gastrectomy
  • Gastroenterostomy
  • Gastroesophageal Reflux
  • Gastrostomy
  • Hernia
  • Hernia, Diaphragmatic
  • Hernia, Femoral
  • Hernia, Hiatal
  • Hernia, Inguinal
  • Hernia, Obturator
  • Hernia, Umbilical
  • Hernia, Ventral
  • Intestinal Fistula
  • Intestinal Neoplasms
  • Intestine, Small
  • Jejunoileal Bypass
  • Medical Oncology
  • Obesity
  • Peptic Ulcer
  • Postgastrectomy Syndromes
  • Reoperation
  • Colon, Sigmoid
  • Splenectomy
  • Stomach
  • Stomach Volvulus
  • Gastric Bypass
  • Gastroplasty
  • Gallbladder Emptying
  • Cholecystectomy, Laparoscopic
  • Gastric Outlet Obstruction
  • Gastroparesis
  • Fundoplication
  • Minimally Invasive Surgical Procedures
  • Gastrointestinal Tract
  • Gallstones
  • Gastrointestinal Stromal Tumors
  • Hernia, Abdominal
  • Esophageal Sphincter, Lower
  • Bariatric Surgery
  • Gastropexy

Patient Care

Accepts new patients? Yes
Patient Type: Adult; Adolescent; Geriatric
Referrals: From patients or physicians

Patient Care Organizations

Gastrointestinal Motility Program

Surgery: Bariatric Surgery Program

Yale Medicine

Office of Cooperative Research

Clinical Trials

Conditions Study Title
Diseases of the Digestive System - Small Intestines, Large Intestines & Rectum, Diseases of the Digestive System - Stomach A Prospective Trial of a Bio-absorbable Mesh in Challenging Laparoscopic Ventral or Incisional Hernia Repair (ATLAS)

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Contact Info

Andrew Duffy, MD, FACS, FASMBS
Patient Care Locations
Gastrointestinal and Bariatric SurgeryTemple Medical Center
40 Temple Street, Ste Suite 7B

New Haven, CT 06510
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Yale Minimally Invasive and Bariatric SurgeryYale Minimally Invasive and Bariatric Surgery
2000 Post Road, Ste 101

Fairfield, CT 06824
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Mailing Address
40 Temple Street
New Haven, CT 06520-8062

Curriculum Vitae