Doctor of Medicine, Hamamatsu University, Japan, 1989. Doctor of Philosophy, Hamamatsu Graduate School Medicine, Japan, 1997.
Resident Hamamatsu University Hospital, 1989—1990, Fujieda (Japan) Municipal General Hospital, 1990—1993. Chief department internal medicine Chofu (Japan) Hospital, 2001—2004, Tokyo Metropolitan Health and Medical Treatment Corporation, Ohkubo (Japan) Hospital, since 2004.
Fellow: Japanese Society Psychosomatic Medicine (licentiate), Japanese Society Internal Medicine (licentiate). Member: Endocrine Society (licentiate Abbott Thyroid Research Clinical Fellow award 2001).
Married Mikayo Sato, June 13, 1992.