Dr. Shieh is a licensed Gastroenterology in NJ. Medical degree obtained from Boston University School of Medicine. Completed residency training at Marshall University and fellowship training at Yale New Haven. Currently practices at Simmit Medical Group (Simmit Medical Group), located at 75 E. Northfield Rd, Livingston, NJ 07039. Dr. Shieh specializes in Abdominal pain and bloating, Achalasia, Advanced Endoscopy, Barrett¡¯s Esophagus and ablation of Barrett¡¯s, C. difficile infection, Celiac disease, Chronic constipation, Chronic diarrhea..... In addition to English, Dr. Shieh speaks Mandarin and accepts new patients.