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Michael Robert Marohn, D.O.

Photo of Dr. Michael Robert Marohn, D.O.

Director, Minimally Invasive Surgery (MIS) Fellowship

Associate Professor of Surgery


Languages: English, French

Expertise: Achalasia, Adrenal Disorders, Adrenal Surgery, Bile Duct Injury, Bile Duct Surgery, Biliary Tract Surgery, Colitis, Ulcerative, Colon Cancer, Colon Surgery, Colonic Inertia, Colorectal Cancer, Colorectal Surgery, Crohn's Disease, Diaphragmatic Hernia, Diverticulosis, Endocrine Diseases, Endocrine Oncology, Endocrine Surgery, Gallbladder Surgery, Gallstones, Gastroesophageal Reflux Disease (GERD), General Surgery, GERD Surgery , Hiatal Hernia, Inflammatory Bowel Disease, Inguinal Hernia, Inguinal Hernia Repair, Minimally Invasive Surgery, Pancreatic Surgery, Pancreatic Tumors, Paraesophageal Hernia, Parathyroid Surgery, Periampullary Tumors, Rectal Surgery, Reflux and Burning, Robotic Surgery, Spleen Surgery, Superior Mesenteric Artery Syndrome, Surgery, Thyroid Surgery, Ulcerative Colitis more

Research Interests: Minimally Invasive Surgery (MIS); Emerging interventional technologies; Surgical Robotics/Computer, Assisted Surgery; Telemedicine; Image integration in functional/interventional medicine; Surgical education, training, and simulation; Surgeon Performed Ultrasound; Harnessing technology for improved patient care & safety; Global impact of emerging technologies; Natural orifice transluminal endoscopic surgery (NOTES); Endocrine Surgery: Minimally Invasive Approaches more

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The Johns Hopkins Hospital
Appointment Phone: 410-955-5464

600 N. Wolfe Street
Sheikh Zayed Tower
Baltimore, MD 21287 map

Johns Hopkins Bayview Medical Center
Appointment Phone: 410-550-0400

4940 Eastern Avenue
Baltimore, MD 21224 map


Col. Marohn, USAF (Ret) was formerly an associate professor and vice chair of the Norman M. Rich Department of Surgery, Uniformed Services University (USU), Bethesda, MD; chief of general surgery, Malcolm Grow USAF Medical Center; and associate program director, Walter Reed Army Medical Center general surgery residency. He co-founded the USU Department of Defense Tri-service Videoendoscopic Surgery Program. more


  • Director, Minimally Invasive Surgery (MIS) Fellowship
  • Director, Minimally Invasive Surgery Training Center (MISTC)
  • Associate Professor of Surgery

Departments / Divisions

Centers & Institutes



  • DO, Chicago College Of Osteopathic Medicine Midwestern University (1979)


  • Wilford Hall Medical Center (AETC) / General Surgery (1981)


  • Wilford Hall Medical Center (AETC) / Surgical Critical Care (1982)
  • Wilford Hall Medical Center (AETC) / General Surgery (1985)

Board Certifications

  • American Board of Surgery / Surgery- General (1989, 2010)

Research & Publications

Core Facility: Survival - Blalock

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