Doctor of Medicine, Tokyo University, 1978. Doctor of Philosophy, Tokyo University, 1988.
Assistant professor Tokyo University, since 1994. Chief, cardiovascular surgery JR Tokyo General Hospital, Japan, since 1999. Chief cardiovascular surgery International University Health and Welfare, since 2004, professor, since 2004.
Fellow: Japanese College of Cardiology (licentiate), Japanese Association for Thoacic and Cardiovasc. Surgeon (licentiate). Member: Japanese Association for Surgeons (licentiate), International Society for Heart and Lung Transplantation (life), The Transplantation Society (life).
Married Haruko Chigusa, March 16, 1961. Children: Shizuka, Yukari, Masahiro.