Keio University (M.D. 1984)
Keio Univ. General and Cardiovasc. Surg. Residency (1984-1991)
La Pitie Hosp. Paris, Card. Surg. Fellow (1991-1992)
Keio Univ.Cardiovasc. Surgeon (1992-1993)
The Second Tokyo National Hospital, Cardiovasc. Surgeon (1993-1997)
National Saitama Hospital, Cardiovasc. Surgeon (1997-2000)
Ashikaga Red Cross Hospital, Cardiovasc. Surgeon (2000-2002)
National Tokyo Medical Center, Cardiovasc. Surgeon (2003-2005)
Saiseikai Utsunomiya Hospital, Cardiovasc. Surgeon (2005-2007)
Kawasaki Municipal Hospital, Chief and Director of Cardiovascular Surgery (2007-2012)
Keio Univ. Cardiovasc. Surgeon (2012-2014)
Professor and Chairman, Department of Cardiovascular and Thoracic Surgery, National Defense Medical College (2014-)
Valve Replacement
Assisted Circulation
Aortic Dissection
Cardiac and Vascular Tumors