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Structure & Member Societies

Structure
Official Member Societies
Links to Related Overseas Societies

JDDW Office Address

Structure

As of Apr. 1, 2025

Organization of JDDW

Official Member and Executive Director (Representative Director)	Kazuhiko Koike
Official Members and Executive Directors	Atsushi Irisawa, Hideki Ueno, Tatsuya Kanto, Takanori Goi, Akiko Shiotani, Ken Shirabe, Tetsuo Takehara, Shinji Tanaka, Atsushi Masamune, Satoshi Mochida, Hitoshi Yoshiji
Official Members and Auditors	Haruhiro Inoue, Yuko Kitagawa, Yasunari Nakamoto, Sumiko Nagoshi
Official Members	Hajime Isomoto, Daisuke Ichikawa, Hiromasa Ohira, Masayuki Kurosaki, Yutaka Saito, Masayuki Sho, Shuji Takiguchi, Yasuhito Tanaka, Shuji Terai, Hiroshi Nakase, Mitsuhiro Fujishiro, Shomei Ryozawa *Official Members: 28 (including 12 Executive Directors)
Advisors	Yutaka Atomi, Kentaro Sugano, Tooru Shimosegawa

Standing Committees

General Affairs Planning Committee

Chair	Ken Shirabe
Vice Chair	Shinji Tanaka
Members	Hajime Isomoto, Shuji Terai, Naoki Hiki, Mitsuhiro Fujishiro, Ryota Hokari, Hiroshi Yotsuyanagi

Financial Committee

Chair	Satoshi Mochida
Vice Chair	Hideki Ueno
Members	Norio Akuta, Ryu Ishihara, Daisuke Ichikawa, Masayuki Kurosaki, Hiroshi Seno, Shomei Ryozawa

Annual Conference Committee

Chair	Atsushi Irisawa
Vice Chair	Tatsuya Kanto
Members	Hiromasa Ohira, Akio Saiura, Masayuki Sho, Yasuhito Tanaka, Sachiyo Nomura, Mitsuhiro Fujishiro, Takahisa Matsuda
Hands-on Live Working Group	Mitsuhiro Fujishiro(Chair) Hiroyuki Isayama, Masafumi Inomata, Toshio Uraoka, Hidekatsu Kuroda, Chie Tanaka, Yousuke Nakai, Yoichi Hiasa, Tadakazu Hisamatsu

Public Relations Committee

Chair	Tetsuo Takehara
Members	Masayuki Kitano, Yutaka Saito, Masahito Shimizu, Shuji Takiguchi, Shuji Terai, Hiroshi Nakase, Hayato Hikita, Tsutomu Fujii

International Committee

International Committee	Atsushi Masamune(Chair), Akiko Shiotani(Vice Chair), Takanori Goi, Hitoshi Yoshiji
JDDW President	Kazuhiko Koike
Board Chairs of Official Member Societies	Ken Shirabe, Tetsuo Takehara, Shinji Tanaka, Satoshi Mochida

COI Committee

Chair	Yoshiyuki Ueno
Members	Hiroki Kawashima, Michiie Sakamoto, Chie Tanaka, Ichiro Yasuda

Annual JDDW Steering Committee

JDDW 2025 Steering Committee

Chair of Steering Committee	Yoshiyuki Ueno
Congress Presidents	Yoshiyuki Ueno, Kiyohito Tanaka, Tetsuo Takehara, Shuji Takiguchi, Shinji Okaniwa
Chair of the Preparatory Committee	Yasuhiko Abe, Takuji Kawamura, Masato Nakamura, Kenta Saito, Toshiharu Takahashi

JDDW 2026 Steering Committee

Congress Presidents	Michiaki Unno, Ryu Ishihara, Etsuro Hatano, Hideki Ueno, Tatsuya Mikami
Chair of the Preparatory Committee	Shuichi Aoki, Takashi Kanesaka, Yoichiro Uchida, Yoshiki Kajiwara, Tetsuya Tatsuta

Integrated Program Committee

JDDW President	Kazuhiko Koike
Board Chairs of Official Member Societies	Ken Shirabe, Tetsuo Takehara, Shinji Tanaka, Satoshi Mochida
Annual Conference Committee	Atsushi Irisawa(Chair), Tatsuya Kanto(Vice Chair) Hiromasa Ohira, Akio Saiura, Masayuki Sho, Yasuhito Tanaka, Sachiyo Nomura, Mitsuhiro Fujishiro, Takahisa Matsuda
Members	Masahito Shimizu, Hiroya Takeuchi, Keisuke Tateishi, Ichiro Yasuda
JDDW 2025 Steering Committee	Yoshiyuki Ueno, Kiyohito Tanaka, Tetsuo Takehara, Shuji Takiguchi, Shinji Okaniwa Yasuhiko Abe, Takuji Kawamura, Masato Nakamura, Kenta Saito, Toshiharu Takahashi
JDDW 2026 Steering Committee	Michiaki Unno, Ryu Ishihara, Etsuro Hatano, Hideki Ueno, Tatsuya Mikami Shuichi Aoki, Takashi Kanesaka, Yoichiro Uchida, Yoshiki Kajiwara, Tetsuya Tatsuta

Extraordinary Committees

Committee for Women Physicians and Researchers of Gastroenterology in Japan

Chair	Atsushi Irisawa
Members	Naomi Kakushima, Mina Nakagawa, Sachiyo Nomura, Mariko Hojo

Future Planning Committee

Directors of Official Member Societies	Atsushi Irisawa, Hideki Ueno, Tatsuya Kanto, Takanori Goi, Kazuhiko Koike, Akiko Shiotani, Ken Shirabe, Tetsuo Takehara, Shinji Tanaka, Atsushi Masamune, Satoshi Mochida, Hitoshi Yoshiji
Auditors	Haruhiro Inoue, Yuko Kitagawa, Yasunari Nakamoto, Sumiko Nagoshi
Advisors	Yutaka Atomi, Kentaro Sugano, Tooru Shimosegawa
Members	Ryuichi Okamoto, Chika Kusano, Yukinori Kurokawa, Masayuki Saruta, Kazuki Sumiyama, Taro Takami, Hayato Nakagawa, Taizo Hibi

JDDW Office Address

Shimbashi i-MARK Bldg. 6F, 2-6-2 Shimbashi, Minato-Ku, Tokyo 105-0004, Japan
TEL: +81-3-6550-8751 FAX: +81-3-6550-8752

Access:
2-minute walk from JR Shimbashi Station
1-minute walk from Shimbashi Station on Tokyo Metro’s Ginza Line, Toei Subway Asakusa Line
2-minute walk from Uchisaiwaicho Station on Toei Subway Mita Line

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Official Member Societies

The Japanese Society of Gastroenterology (JSGE)	Shimbashi i-MARK Bldg. 6F, 2-6-2 Shimbashi, Minato-Ku, Tokyo 105-0004 TEL: +81-3-6811-2351 FAX: +81-3-6811-2352 E-mail: info@jsge.or.jp » Website
The Japan Gastroenterological Endoscopy Society (JGES)	Shin-ochanomizu Urban Trinity Bldg. 4F, 3-2-1 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062 TEL:+81-3-3525-4670 FAX:+81-3-3525-4677 » Website
The Japan Society of Hepatology(JSH)	Kashiwaya Bldg. 5F, 3-28-10, Hongo, Bunkyo-ku, Tokyo 113-0033 Tel:+81-3-3812-1567 Fax:+81-3-3812-6620 » Website
The Japanese Society of Gastroenterological Surgery (JSGS)	Axior Mita 6F, 3-1-17, Mita, Minato-ku, Tokyo 108-0073 TEL:+81-3-5427-5500 FAX:+81-3-5427-5566 » Website

Member Societies

The Japanese Society of Gastrointestinal Cancer Screening (JSGCS)	Dai-ni Yasuke Bldg. 3rd Fl, 1-19-2 Sekiguchi Bunkyo-ku, Tokyo 112-0014 TEL:+81-3-3235-6754 FAX:+81-3-3235-7647 » Website

Links to Related Overseas Societies

American Association for the Study of Liver Diseases (AASLD)	» Website
The Asian Pacific Association for the Study of the Liver (APASL)	» Website
Asian Pacific Digestive Week (APDW)	» Website
United European Gastroenterology (UEG)	» Website
World Endoscopy Organisation (WEO)	» Website
World Gastroenterology Organisation (WGO)	» Website