1. Minnesota


  1. Gastroenterology and Hepatology


  1. BA - Summa Cum Laude DePauw University
  2. MD Harvard Medical School
  3. Internship - Internship and Residency in Internal Medicine University of Minnesota Hospital
  4. Resident - Chief Medical Resident University of Minnesota Hospital
  5. Fellow - Fellowship in Gastroenterology Mayo Clinic in Rochester
  6. Fellow - Special Clinical Fellow in Epidemiology Mayo Clinic in Rochester
  7. Other New England Epidemiology Institute
  8. Other - University of Minnesota Institute for Health Services Research Extension Courses University of Minnesota


  1. American Board of Internal Medicine - Internal Medicine
  2. American Board of Internal Medicine - Gastroenterology

Academic rank

  1. Professor of Medicine

Professional Highlights

  • President, Functional Brain Gut Research Group (FBG), 2007
  • Associate Editor, American Journal of Gastroenterology, 2004-2009


  • Epidemiology and outcomes research in gastroenterology
  • Functional gastrointestinal disorders (IBS), epidemiology and clinical
  • Gastroesophageal reflux disease, epidemiology and clinical
  • Gastrointestinal motility, clinical
  • Gastric and esophageal adenocarcinoma epidemiology and clinical


See a listing of publications on PubMed, a service of the National Library of Medicine.


See a description of research activities.