President

• Kazuhiko KOIKE, MD, PhD
  Dept. of Gastroenterology, Graduate School of Medicine, The Univ. of Tokyo

Director

• Kazuaki CHAYAMA, MD, PhD
  Dept. of Gastroenterology and Metabolism, Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima Univ.
• Nobuyuki ENOMOTO, MD, PhD
  First Dept. of internal Medicine, Faculty of Medicine, Univ. of Yamanashi
• Hideki FUJII, MD, PhD
  Kofu Municipa Hospital
• Eisei Gu, MD, PhD
  Kohnan Hospital
• Etsuko HASHIMOTO, MD, PhD
  Institute of Gastroenterology, Dept. of Internal Medicine, Tokyo Women's Medical Univ.
• Masao ICHINOSE, MD, PhD
  Faculty of Medicine, Teikyo Univ.
• Keiichi KUBOTA, MD, PhD
  Second Dept. of Surgery, Dokkyo Univ. School of Medicine
• Hiroto MIWA, MD, PhD
  Division of Upper Gastroenterology, Dept. of Internal Medicine, Hyogo College of Medicine
• Satoshi MOCHIDA, MD, PhD
  Dept of Gastroenterology & Hepatology, Saitama Medical Univ.
• Kazunari MURAKAMI, MD, PhD
  Dept. of Gastroenterology, Oita Univ.
• Yasunari NAKAMOTO, MD, PhD
  Dept. of Gastroenterology, Graduate School of Medicine, Fukui Univ.
• Naoya SAKAMOTO, MD, PhD
  Gastroenterology and Hepatology, Hokkaido Univ. Graduate School of Medicine
• Yutaka SASAKI, MD, PhD
  Dept. of Gastroenterology and Hepatology, Graduate School of Medical Science, Kumamoto Univ.
• Masanori SUGIYAMA, MD, PhD
  Dept. of Surgery, Kyorin Univ. School of Medicine
• Tetsuji TAKAYAMA, MD, PhD
  Dept. of Gastroenterology and Oncology, Institute of Health Biosciences, Univ. of Tokushima Graduate School
• Tetsuo TAKEHARA, MD Dept. of Gastroenterology and Hepatology, Osaka Univ. Graduate School of Medicine
• Michiaki UNNO, MD, PhD
  Dept. of Gastroenterological Surgery, Tohoku Univ. Graduate School of Medicine
• Sumio WATANABE, MD, PhD
  Dept. of Gastroenterology, Juntendo Univ. School of Medicine

Auditor 

• Hideyuki HIRAISHI, MD, PhD
  Dept. of Gastroenterology, Dokkyo Univ. School of Medicine
• Fumio ITOH, MD, PhD
  Dept. of Internal Medicine, Division of Gastroenterology and Hepatology, St. Marianna Univ. School of Medicine
• Yasumasa NIWA, MD, PhD
  Aichi Cancer Center Hospital
• Toshiji SAIBARA, MD, PhD
  Dept. of Gastroenterology and Hepatology, Kochi Medical School