Piet de Groen, MD

Professor of Medicine, Division of Gastroenterology, Hepatology, and Nutrition

Piet de Groen

Contact Info

Mailing Address:
420 Delaware Street SE
MMC 36
Minneapolis, MN 55455

Lab Address:
406 Harvard Street SE
Room V359
Minneapolis, MN 55455

Administrative Assistant Name
Colleen Unger

Administrative Phone

Administrative Email

Administrative Fax Number

Professor of Medicine, Division of Gastroenterology, Hepatology, and Nutrition


Medical School, Catholic University Nijmegen, Netherlands

Residency, Mayo Clinic, Rochester, MN

Fellowship, Mayo Clinic, Rochester, MN

Fellowship, University of Utrecht, Utrecht, Netherlands


Dr. de Groen is a Professor of Medicine in the Division of Gastroenterology, Hepatology and Nutrition, at University of Minnesota, emeritus staff at Mayo Clinic College of Medicine, adjunct professor at University of Arizona and former Program Director of the Mayo Clinic/IBM Computational Biology Collaboration. He is an NIH-funded clinical investigator and international expert in medical informatics, primary liver cancers and colonoscopy.

His endoscopic research is focused on measuring what happens during colonoscopy. Together with collaborators at Iowa State University and the University of North Texas he has created a first-of-a-kind new software system that automatically captures and analyzes “inside-the-patient” video information of medical procedures performed via endoscopy. At present he is studying patient- and endoscopist-specific features, including quality of the colon preparation and effort of the endoscopist to visualize mucosa, remove remaining fecal material and adequately distend the colon.

The ultimate goal of his endoscopic research related to colonoscopy is a fully automated quality control system that provides real-time feedback to the endoscopist and insures individualized healthcare by virtually guaranteeing a high quality examination for each patient. Another goal is to extend the technology to other organs examined using endoscopy equipment and combine the information obtained from the optical signal with information derived from other imaging modalities.


Research Summary/Interests

Colorectal cancer prevention, colonoscopy and quality of endoscopy


Academic Interests and Focus

Endoscopy, comprehensive patient evaluation


Clinical Interests

Colorectal cancer prevention, primary liver cancer, drug-induced liver toxicity