Dr. Ong Guan Yeow is a knowledgeable and skillful Gastroenterologist & Hepatologist with more than 18 years of experience in managing various gastrointestinal diseases. His main scope of work include Gastroesophageal Reflux Diseases (acid reflux), Peptic Ulcer Diseases (oesophageal ulcer, gastric ulcer, duodenal ulcer), Gastritis, Helicobacter Pylori Infection, Pancreatitis, Cholecystitis, Irritable Bowel Disease (IBS), Inflammatory Bowel Disease, Hepatitis, Fatty Liver Disease, Liver Cirrhosis and Liver Tumor.