Doctor of Medicine, Osaka University, Japan, 1961. Doctor in Medical Science, Osaka University, Japan, 1973.
Intern Tachikawa United States Air Force Hospital, Tokyo, 1961-1962. Resident surgery Osaka (Japan) City University Hospital, 1962-1969, instructor surgery, 1969-1974. Surgical fellow Hahnemman Medical College, Philadelphia, 1970-1972.
Assistant professor Osaka (Japan) City University, 1974-1989, associate professor, 1989-2001. Chairman surgery Osaka (Japan) Socio-Medical Center, 1992-2001. Visiting professor Kyto University School Medicine, since 2000.
President (honorary) Minami Ashiyahama Hospital, since 2001.
Fellow American College of Surgeons, Japanese Association Gastroenterology, Japan Pancreas Society (member council 1987). Member Society for Surgery of the Alimentary Tract, International Association Pancreatology (council 1998), Pancreatic Research Foundation of Japan (council since 1997, executive director since 2001), Asia Oceanica Pancreatic Association (councilor since 2004).
Married Michiko Kitamoto, May 28, 1967. Children: Makoto, Akira, Shinobu.