About Dr. Zirin

Richard Zirin, MD

Dr. Zirin is dually certified in internal medicine and gastroenterology, and has more than three decades experience helping diagnose and treat problems in the digestive system.

At Newburyport Gastroenterology, Dr. Zirin, Dr. Liu and Dr. Mark Amorosino, strive to help patients get digestive health and well-being. Dr. Zirin's expertise covers the evaluation, diagnosis and treatment of a wide range of gastrointestinal disorders, including colon cancer screening and colonoscopy, diseases of the small bowel, upper endoscopy, video capsule endoscopy, and liver disease.


Board Certification

American Board of Internal Medicine (Internal Medicine, Gastroenterology)

Medical School

Boston University School of Medicine


George Washington University Hospital, Washington, DC


George Washington University Hospital, Washington, DC


University of Connecticut Health Center, Farmington, CT



  • Gastroenterology

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