Clinical Associate Professor, Department of Cardiovascular Science, East Carolina University (2014- )
Chief, Division of Cardiovascular Surgery, Japanese Red Cross Medical Center (2008-2013)
Assistant Professor, Department of Cardiac Surgery, University of Tokyo Hospital (2006- 2008)
Senior Associate, Deaprtment of Cardiac Surgery, National Children's Hospital, JAPAN (2005-2006)
Senior Instructor, Department of Cardiac Surgery, University of Tokyo Hospital ( 2004-2005)
Co-chief, Division of Cardiovascular Surgery, National Hospital at Maizuru (2002-2003)
Clinical Fellow of Cardiac Surgery, Children's Hospital Boston (1999-2000)
Research Fellow of Cardiac Surgery, Children's Hospital Boston (1996-1997)
Research Fellow of cardiothoracic surgery, University of Pittsburgh (1992-1994)
Neonatal and pediatric cardiac surgery
Myocardial protection
Adult with congenital heart disease
Coronary bypass surgery
Valve repair
Hirosaki University, Japan (PhD 1991)
Hirosaki, University,Japan (M.D.1987)
Children's Hospital, Boston (Clinical fellowship, 1999)