Douglas J. Cassidy, MD
Abdominal Wall Reconstruction, Gastrointestinal Surgery, Hernia Surgery

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MUSC Health GI Surgery at Ashley River Tower - SURG GI ART1
25 Courtenay Dr, 1st Floor
Charleston, SC 29425
Phone
843-876-5788Douglas 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.
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.
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Douglas J. Cassidy

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Provider Information
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
Gender
Male
Languages
English
Education
Tufts University School of Medicine
Medical school, 2015
Massachusetts General Hospital
Residency, 2020
Massachusetts General Hospital: Surgical Education and Simulation Research
Fellowship, 2022
Barnes Jewish Hospital / Washington University: Advanced GI and Foregut Minimally Invasive Surgery
Fellowship, 2023
Certifications
American Board of Surgery
Insurance Coverage
Insurance plans vary by individual. Please contact your insurance provider to check your coverage.
- Absolute Total Care (NEIC)
- Absolute Total Care Healthy Connections Prime Dual Medicare/Medicaid Plan
- Aetna (Exclusive Choice)
- Aetna (Managed Choice)
- Aetna (Open Choice)
- Aetna (Preferred Provider Organization)
- Aetna Medicare
- AllWell by Absolute Total Care
- Ambetter from Absolute Total Care (Marketplace)
- BCBS Blue Essentials (Marketplace)
- Blue Choice Blue Option (Marketplace)
- Blue Choice Medicaid
- Blue Cross Blue Shield Blue Choice HealthCare (Group Health Plan)
- Blue Cross Blue Shield Federal (FEP)
- Blue Cross Blue Shield Medicare
- Blue Cross Blue Shield Planned Administrators
- Blue Cross Blue Shield Preferred Blue (PPC)
- Blue Cross Blue Shield State Health Plan for South Carolina
- Cigna
- Cigna Medicare
- Clover Health
- Coventry
- Employers Health Network (EHN)
- First Choice Next
- First Choice VIP Care Plus Healthy Connections Prime Dual Medicare/Medicaid Plan
- First Choice/Select Health (NEIC)
- First Health
- Great West Healthcare (Part of Cigna now)
- Healthy Blue Medicaid by Blue Choice
- Humana ChoiceCare PPO (Group Health Plan) (through March 31, 2025)
- Humana Healthy Horizons (through March 31, 2025)
- Humana Medicare (through March 31, 2025)
- Medcost
- Medicare A & B (Traditional Medicare)
- Molina Healthcare
- Molina Healthy Connections Prime Dual Medicare/Medicaid Plan
- Tricare
- United HealthCare
- Veterans' Affairs Community Care Network (CCN)
- WellCare
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Map & Directions
MUSC Health GI Surgery at Ashley River Tower - SURG GI ART1
25 Courtenay Dr, 1st Floor Charleston, SC 29425