Anthony J. DiMarino, Jr., MD

  • Jefferson University Physician
  • Chair, Department of Gastroenterology
  • William Rorer Professor of Medicine
  • Chief, Division of Gastroenterology and Hepatology


  • Gastroenterology
  • Consultive gastroenterology
  • Gastroenterology – Celiac, Nutrition, Eating Disorders
  • Gastroenterology – Esophageal Disease/Cancer
  • Gastroenterology – Inflammatory Bowel Disease ( Ulcerative Colitis & Crohn’s Disease )
  • Gastroenterology – Motility Disorders

Board Certifications

Internal Medicine

Hospital Affiliation / Admitting Privileges

Thomas Jefferson University Hospital
Inspira Health Network
Methodist Hospital Division of Thomas Jefferson University Hospital

Education and Training

Medical/Professional School & Year of Graduation
Hahnemann University School of Medicine, 1968

Postgraduate Training and Fellowship Appointments:
Intern in Medicine, Hahnemann Medical College and Hospital,Philadelphia, PA
First Year Resident in Medicine, Hahnemann Medical College and Hospital, Philadelphia, PA
Second Year Resident in Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA
Fellowship in Gastroenterology, Hospital of the University of Pennsylvania, Philadelphia, PA
Medical Licensure, Commonwealth of Pennsylvania and New Jersey


Hahnemann University Hospital


Hahnemann University Hospital
Hospital of University of Pennsylvania (HUP)


Hospital of University of Pennsylvania (HUP)

Awards and Honors

1999,2002,2004,2005,2006,2007,2008, 2010 Top Docs Philadelphia Magazine – Named one of the outstanding Gastroenterologists in the Philadelphia area as voted by Delaware Valley physicians

1999 Lifetime Member Whos Who

2003 Delaware Valley Consumers Checkbook
Named one of the outstanding Gastroenterologists in the Delaware Valley

2005 Top Physicians of South Jersey 2005
President, Student Government – Hahnemann Medical College
Alpha Omega Alpha Honor Medical Society, Hahnemann Medical College
Simon Komarov Prize for Excellence in Gastroenterology Research
“Physician of the Year” – selected by the Philadelphia/Delaware Valley Chapter of the National Foundation for Ileitis and Colitis
Outstanding Teaching Award by senior residents,
Department of Medicine Presbyterian University of Pennsylvania Medical Center
Selected one of 25 Best and Brightest Residents of Gloucester County,May 12, 1988, Gloucester County Times
Member, Bockus International Society of Gastroenterology
Outstanding Student Teaching Award presented by The University of Pennsylvania Class of 1992
Fellow, College of Physicians of Philadelphia
The Best Doctors in America: Northeast Region
Named one of 100 Gloucester County residents who are making a difference in people’s lives and changing the county. April 9, 1997, Gloucester County Times
The Best Doctors in America – Fourth Listing
Honorary Alumnus, Jefferson Alumni Society
Faculty Advisor, Komarov Competition, Gastrointestinal Research for Gastrointestinal Fellows
Delaware Valley Consumers Checkbook
2007 Named one of the outstanding Gastroenterologists by physicians in the Delaware Valley

Research Interests

New drug development in treatment of Celiac Disease
Esophageal Reflux (swallowing and other gastrointestinal motility disorders)
Gastrointestinal endoscopic disinfection

Other Expertise

Strong interest in medical education having organized and served as the course director for the largest annual gastrointestinal update course in the Delaware Valley for the past 19 consecutive years. In 1992, honored by the American Society for Gastrointestinal Endoscopy and selected to be the director of the national postgraduate course held at the annual meeting of the American Society for Gastrointestinal Endoscopy in San Francisco, California. The course attracted over 2,050 attendees.

Author of over eighty original papers and as a lead author his papers have appeared in the New England Journal of Medicine, Journal of Clinical Investigation, The American Journal of Physiology, Gastroenterology, The American Journal of Gastroenterology, and Gastrointestinal Endoscopy.

Author of the “White Paper”, which is currently still in use as the standard for reprocessing endoscopic gastrointestinal instruments to protect patient safety between patient procedures.

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