Shieh, Frederick K, M.D.
Gastroenterology

Simmit Medical Group,

75 E. Northfield Rd,
Livingston NJ 07039
Phone: 973-576-5591,

Abdominal pain and bloating, Achalasia, Advanced Endoscopy, Barrett¡¯s Esophagus and ablation of Barrett¡¯s, C. difficile infection, Celiac disease, Chronic constipation, Chronic diarrhea....