Doctor of Medicine, Keio University, 1977. Doctor of Medical Science, Keio University, 1981. Doctor of Philosophy, Lund University, 1989.
Instructor medicine Keio University Hospital, Tokyo, 1981—1982, 1982—1986, Tokyo, 1989—1991. Vice director neurology Shizuoka Red Cross Hospital, Japan, 1982. Research fellow neurobiology University Lund, Sweden, 1986—1989.
Director medicine and neurology Mito Red Cross Hospital, Japan, 1991—1998. Assistant professor medicine Keio University, since 1992, Tsukuba (Japan) University, 1993-1998. Vice president Mito (Japan) Red Cross Hospital, 1997-1998.
Assistant professor medicine Kitasato University, Kanagawa, 1998-1999, associate professor, 1999-2003, professor, 2003-2004. Professor medicine Keio University since 2004, vice president Keio University Hospital since 2007.
Fellow American College of Physicians, Japanese Society Internal Medicine. Member International Society Cerebral Blood Flow and Metabolism, World Federation Neurology, International Neurology, International Society Stroke, International Headache Society, Japanese Mozart Society, Japanese Flute Society, Japan-Sweden Society, Japan-Sweden Science Club.
Married Hiroko Furukawa, March 31, 1979. 1 child, Shota.