（As of May, 2022）
Professor & Director, Dept. of Endoscopy, Hiroshima Univ. Hospital / Professor, Endoscopy & Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima Univ.
Professor, Division of Gastroenterology and Hepatology, Toho Univ. Omori Medical Center
Vice director, Dept. of Gastrointestinal Oncology, Osaka International Cancer Institute
Medical consultant, Dept. of Gastroenterology, Yamashita Hospital
Professor & Chairman, Dept. of Gastroenterology, Dokkyo Medical Univ. School of Medicine
Professor & Chairman, Dept. of Gastroenterology, Fukuoka Univ. Chikushi Hospital
Professor & Director, Center for Diagnostic and Therapeutic Endoscopy, Keio Univ. School of Medicine
Professor & Director, Dept. of Gastrointestinal Endoscopy, Endoscopy Center, Tokyo Medical Univ. Hospital
Professor, Dept. of Gastroenterology & Hepatology, Kawasaki Medical Schoo
Chief Information Officer (CIO) & Deputy of Hospital President, Dept. of Internal Medicine, Division of Gastroenterology, Kyoto Second Red Cross Hospital
Adviser, The Premier Departmental Research of Medicine, Osaka Medical and Pharmaceutical University
President of Hirosaki University
Professor, Dept. of Gastroenterology, Graduate School of Medicine, The University of Tokyo
Professor, Dept. of Internal Medicine, Division of Gastroenterology and Hepatology, Iwate Medical Univ.
Professor & Chairman, Dept. of Gastroenterology, Oita Univ. Faculty of Medicine
Associate Professor / Director, Dept. of Gastroenterology and Hepatology, Sapporo Medical Univ. School of Medicine / Gastrointestinal Endoscopy Center, Sapporo Medical Univ. Hospital
Professor & Chairman, Dept. of Medicine, Jichi Medical Univ.
Professor and Chairman, Dept. of Gastroenterology, Saitama Medical University International Medical Center
Director of Endoscopy Center, Itami City Hospital
Director, Japanese Red Cross Society Himeji Hospital
Professor and Chairman, Dept. of Surgery, Keio Univ.
Vice Trustee for Clinical Research, Director & Professor, Center for Clinical Research and Advanced Medicine Shiga Univ. of Medical Science / Professor, Medical Research Support Center, Univ. of Fukui Hospital