Undergraduate Education:

• Stanford University, Stanford CA

Medical Education:

• Louisiana State University School of Medicine, New Orleans LA

Residency:

• Charity Hospital, New Orleans LA – Internship
• University of Connecticut School of Medicine, Farmington CT- Chief resident

Fellowship:

• University of Connecticut-, Farmington CT – Gastroenterology
• Yale University, New Haven CT – Hepatology (NIH Trainee)

Board Certifications:

• American Board of Internal Medicine
• American Board of Internal Medicine- Gastroenterology

Professional Appointments and Memberships:

• Associate Clinical Professor of Medicine, Oakland University William Beaumont School of Medicine
• Fellow, American College of Physicians
• Fellow, American College of Gastroenterology

Special Interests:

• Inflammatory bowel disease (Crohn’s disease, Ulcerative Colitis)
• Irritable bowel syndrome
• Reflux and Barrett’s esophagus

Honors and Awards:

• Yale University Gastroenterology Research Award; 1981
• Detroit Monthly-Top Doctor List; 1994, 1996
• Detroit Free Press- Top/Best Doctor List; 1996, 1998
• Detroit Hour Magazine- Top Doctor List; 2000-2013, 2015
• Best Doctors in America; 1999, 2003-2004, 2005-2007, 2009-2012, 2015-2020,
• StyleLine Magazine- Best Doctors for Women; 2009-2010, 2012, 2014
• Vital Magazine- Best Doctors List; 2008
• Who’s Who in America; 2010
• Castle Connolly- Top/Best Doctor; 2013-2025
• Hour Magazine – Top Doctor; 2000-2013, 2015-2020, 2024
• Teacher of the year award – GI Division – Corewell; 2025

Other Interests:

Dr. Duffy has authored over 20 publications in peer-reviewed journals and books.  He has served on the board of directors of the Crohn’s & Colitis Foundation and as President of the Detroit GI Society. He is active in the Gastroenterology Fellowship at William Beaumont Hospital, serves as Fellowship Program Director.