Doctor of Medicine, Keio University, 1982.
Research fellow Memorial Sloan-Kettering Cancer Center, New York City, 1992—1994. Chief urology Keio University School Medicine, Shinjuku-ku, Japan, 1994—1997, assistant professor, since 1997. Chief department urology National Tokyo Medical Center, Meguro-ku, since 1997.
Assistant professor University Ryukyus School Medicine, Okinawa, since 2000.
Member of American Association Cancer Research, American Urological Association (correspondent).
Married Mami Matsumoto, June 7, 1985. Children: Yuki, Rina.