• Chief Director, Ultrasonography and Endoscopy Center
• Attending Physician, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Far Eastern Memorial Hospital, and National Taiwan University Hospital
• Assistant Professor, College of Medicine, Fu Jen Catholic University
• Member of the Board of Supervisors, Taiwan Association for the Study of Small Intestinal Diseases
• Deputy Secretary, The Digestive Endoscopy Society of Taiwan
• Member of World Endoscopy Organization

• 1. Internal medicine
• 2. Gastroenterological disorders
• 3. Biliopancreatic disorders, endoscopic retrograde cholangiopancreatography and cholangioscopy
• 4. Diagnostic and therapeutic endoscopy and endoscopic
• ultrasonography
• 5. Abdominal ultrasonography
• 6. Endoscopic resection techniques, peroral endoscopic myotomy
• 7. Inflammatory bowel disease (Crohn's disease and ulcerative colitis)

• Department of Medicine, Taipei Medical University
• Graduate School of Clinical Medicine, Medical College of National Taiwan Universtiy

• Resident doctor, Taiwan University Hospital
• Chief resident doctor, Taiwan University Hospital
• Fellow doctor, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taiwan University Hospital
• Member of Taiwan Society of Internal Medicine, The Gastroenterological Society of Taiwan, The Digestive Endoscopy Society of Taiwan
• Fellow doctor, Kyoto University Hospital, Kyoto, Japan
• Clinical Observer, Johns Hopkins Hospital, Baltimore, USA