Photo of Sean B. Orenstein, M.D., F.A.C.S.

Sean B. Orenstein M.D., F.A.C.S.

    • Assistant Professor of Surgery, Division of Gastrointestinal and General Surgery School of Medicine

Dr. Orenstein joined the OHSU Department of Surgery in 2014 as Assistant Professor of Surgery within the Division of Gastrointestinal and General Surgery.  His research interests include outcomes and improvements for minimally invasive and open hernia repair techniques, evaluation of hernia mesh prosthetics, and further exploration of the fusion between endoscopic and surgical techniques to improve patient outcomes and medical care.

Dr. Orenstein's residency and fellowship training allowed him to explore his passion for hernia repair, with specialized training in abdominal wall reconstruction for complex and recurrent abdominal hernias. During his fellowship he also focused on minimally invasive surgical techniques such as laparoscopic hernia repair, laparoscopic foregut surgery, and laparoscopic diaphragmatic pacemaker placement for Amyotrophic Lateral Sclerosis (ALS) or spinal cord injury. His fellowship was also an avenue to receive specialized training on advanced endoscopy, including per oral endoscopic myotomy (POEM) for achalasia, endoscopic retrograde cholangiopancreatography (ERCP), and endoscopic stenting.

Dr. Orenstein has held membership with the Association for Academic Surgery since 2008, and with the American College of Surgeons, Americas Hernia Society, and the Society of American Gastrointestinal and Endoscopic Surgeons since 2009.

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Areas of interest

  • Hernia repair
  • Abdominal Wall Reconstruction (AWR)
  • Minimally Invasive Surgery
  • Robotic-assisted Surgery
  • Gastrointestinal (GI) Surgery
  • General Surgery


  • B.A., University of Colorado, Boulder Colorado United States 1999
  • M.M.S., MCP Hahnemann University, Philadelphia Pennsylvania United States 2002
  • M.D., Albany Medical College, Albany New York United States 2006
  • Residency:

    • General Surgery, University of Connecticut School of Medicine, Farmington and Hartford, CT, 2006-2013
  • Fellowship:

    • Advanced GI and Minimally Invasive Surgery, University Hospitals Case Medical Center, Cleveland, OH, 2013-2014
  • Certifications:

    • American Board of Surgery, 2015

Memberships and associations

  • American College of Surgeons (ACS)
  • Americas Hernia Society (AHS)
  • Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
  • Association for Academic Surgery (AAS)

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