Douglas J. Cassidy, MD

Physician in Charleston, SC
Specialties:Abdominal Wall Reconstruction, Gastrointestinal Surgery, Hernia Surgery, Metabolic & Bariatric Surgery
NPI #1245619154

Douglas J. Cassidy, MD

Director of Surgical Simulation, MUSC Surgical Residency

Douglas Cassidy, MD is a fellowship-trained minimally invasive surgeon who specializes in laparoscopic, robotic, and endoscopic techniques for hernia and benign foregut surgery. He has clinical interests in abdominal wall reconstruction and hernia surgery as well as foregut surgery, including gastroesophageal reflux disease (GERD), paraesophageal and hiatal hernias, achalasia, and gastroparesis. Dr. Cassidy enjoys working with his patients and collaborating with multi-disciplinary care teams, including gastroenterologists, metabolic and bariatric surgeons, nutritionists and medical weight loss specialists, and plastic surgeons to provide optimal patient care and develop joint patient-physician care decisions for hernia and foregut patients alike. His research interests include surgical simulation and resident education, and he serves as the Director of Surgical Simulation for the MUSC surgical residency.

He earned his medical degree from Tufts University School of Medicine and was selected to the Alpha Omega Alpha (AOA) honor society. He completed his general surgery residency at Massachusetts General Hospital (MGH), including a two-year Surgical Education and Simulation Research Fellowship where he published on surgical education and won teaching and mentorship awards from both Harvard Medical School and MGH. He then went on to complete a fellowship in Advanced GI and Foregut Minimally Invasive Surgery at Barnes Jewish Hospital / Washington University in St. Louis.

Dr. Cassidy is an active member of several surgical societies, including the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), the Association of Surgical Education (ASE), the Association of Program Directors in Surgery (APDS), and the Fellowship Council (FC). Outside of his work, Dr. Cassidy is a former ice hockey player and active triathlete and enjoys spending his time with his wife and two children.

Board Certifications: American Board of Surgery
Clinical Areas of Interest
  • Abdominal wall reconstruction
  • Achalasia
  • Diaphragmatic hernias (Morgagni, Bochdalek, traumatic)
  • Esophageal diverticula
  • Foregut surgery
  • Gallbladder surgery
  • Gastric GIST (gastrointestinal stromal tumor)
  • Gastroesophageal reflux disease (GERD)
  • Gastroparesis
  • Hernia surgery (ventral, incisional, umbilical, and inguinal)
  • Minimally invasive, endoscopic, and robotic surgical techniques
  • Paraesophageal and hiatal hernias
  • Fellowship at Barnes Jewish Hospital / Washington University: Advanced GI and Foregut Minimally Invasive Surgery
  • Fellowship at Massachusetts General Hospital: Surgical Education and Simulation Research
  • Residency at Massachusetts General Hospital
  • Medical School at Tufts University School of Medicine

Insurances Accepted

Insurance plans vary by individual. Please contact your insurance provider to check your coverage.

My Offices

  • Map of 25 Courtenay Dr in Charleston
    MUSC Health GI Surgery at Ashley River Tower
    Primary Office
    25 Courtenay Dr
    1st Floor
    Charleston, SC 29425
    Day of the WeekHours
    Monday8:00 AM - 5:00 PM
    Tuesday8:00 AM - 5:00 PM
    Wednesday8:00 AM - 5:00 PM
    Thursday8:00 AM - 5:00 PM
    Friday8:00 AM - 5:00 PM
    Map of 25 Courtenay Dr in Charleston


Did you inherit a heart-shaped birthmark or an increased risk for ovarian cancer? Your DNA can affect your health, too. Learn more by joining MUSC's community health research project.