International University of Health and Welfare, Mita Hospital, Tokyo (Japan)
2007-2012 Associate Professor, Department of Cardiovascular medicine, and Director of Echocardiographic Laboratory , Juntendo University Faculty of Medicine, Tokyo, Japan.
2013-2023 Lecturer, Department of Clinical laboratory, Department of Cardiovascular Medicine.
Director of Echocardiography, The University of Tokyo Hospital, Tokyo, Japan
2023-present Professor, Cardiology, International University of Health and Welfare, Mita Hospital