（As of May, 2026）

President

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  Mitsuhiro Fujishiro

  Professor, Dept. of Gastroenterology, Graduate School of Medicine, The Univ. of Tokyo

Directors

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  Katsunori Iijima

  Professor, Department of Gastroenterology & Neurology, Akita Univ.

• 

  Ryu Ishihara

  Vice director, Dept. of Gastrointestinal Oncology, Osaka International Cancer Institute

• 

  Takao Itoi

  Professor & Chairman, Dept. of Gastroenterology and Hepatology, Tokyo Medical University

• 

  Atsushi Irisawa

  Professor & Chairman, Dept. of Gastroenterology, Dokkyo Medical Univ. School of Medicine

• 

  Motohiro Esaki

  Professor, Div. of Gastroenterology, Dept. of Internal Medicine, Faculty of Medicine, Saga University

• 

  Kazuo Ohtsuka

  Professor & Chairman, Digestive Disease Center, Showa Medical Univ. Northern Yokohama Hospital

• 

  Shiro Oka

  Professor, Dept. of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University

• 

  Akio Katanuma

  Associate Professor, Dept. of Gastroenterology and Hepatology, Sapporo Medical Univ. School of Medicine

• 

  Masayuki Kitano

  Professor & Chairman, Second Dept. of Internal Medicine, Wakayama Medical University

• 

  Yutaka Saito

  Chief of Endoscopy Division, Director of Endoscopy Center, National Cancer Center Hospital

• 

  Akiko Shiotani

  Professor, Dept. of Gastroenterology & Hepatology, Kawasaki Medical School

• 

  Kiyohito Tanaka

  Deputy of Hospital President, Kyoto Second Red Cross Hospital

• 

  Takashi Hisabe

  Professor, Dept. of Gastroenterology, Fukuoka Univ. Chikushi Hospital

• 

  Takayuki Matsumoto

  Professor, Dept. of Internal Medicine, Division of Gastroenterology and Hepatology, Iwate Medical Univ.

• 

  Ichiro Yasuda

  Professor, Third Dept. of Internal Medicine, Univ. of Toyama

• 

  Hiro-o Yamano

  Vice Director of Hospital, Ebetsu City Hospital

• 

  Shomei Ryozawa

  Professor and Chairman, Dept. of Gastroenterology, Saitama Medical Univ. International Medical Center

Auditors

• 

  Nobutsugu Abe

  Professor, Dept. of Gastroenterological and General Surgery, Kyorin Univ. Faculty of Medicine

• 

  Hiroyuki Imaeda

  Professor, Dept. of Gastroenterology, Saitama Medical Univ.

• 

  Tetsuji Takayama

  Specially Appointed Professor, Tokushima University Graduate School of Biomedical Sciences / Adviser of Hospital, Higashi Sapporo Hospital

• 

  Junko Fujisaki

  Director, Foundation for Detection of Early Gastric Carcinoma