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. Hassan 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.
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