Dr. Ping-Huei Tseng graduated with a medical degree from the National Taiwan University. After two years’ military service, he completed his residency in internal medicine and fellowship of gastroenterology and hepatology at the National Taiwan University Hospital. He also obtained his PhD degree from the Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University. Dr. Tseng is currently an attending physician at the National Taiwan University Hospital and clinical associate professor in the College of Medicine of National Taiwan University. Dr. Tseng’s research works mainly focus on the upper gastrointestinal diseases, including gastroesophageal reflux disease (GERD), functional GI diseases, and motility disorders such as achalasia and diabetic gastropathy. He has accumulated clinical experiences on the application and interpretation of various motility testing, including high resolution manometry (HRM), multichannel intraluminal impedance-pH (MII-pH) monitoring, and gastric emptying scintigraphy. In addition, in his clinical work, he has applied image enhanced endoscopy (IEE) in the diagnosis of GERD as well as the screening of esophageal neoplasm in head and neck cancer patients with transnasal endoscopy. He has carried out a series of basic and clinical studies focusing on the neurogastroenterology and motility. Currently, he serves as the executive director of Taiwan Neurogastroenterology and Motility Society and a member of Information & Communication Committee and Scientific Committee for Asian Neurogastroenterology and Motility Association.