- 2012/04 - 現在 University of the Ryukyus School of Health Sciences, Faculty of Medicine Professor
- 2014/04 - 2020/03 University of the Ryukyus Graduate School of Health Sciences Dean
- 2013/04 - 2020/03 University of the Ryukyus School of Health Sciences, Faculty of Medicine head
- 2012/04/01 - - , University of the Ryukyus, Faculty of Medicine, School of Health Sciences, Professor
- 2010/01/01 - 2012/03/31 , Nagasaki University Hospital, Department of Hematology, Senior Asistant Professor
- 2009/04/01 - 2012/03/31 , Nagasaki University Hospital, Clinical Oncology Center,
- 2010/01 - 2012/03 Nagasaki University Hospital Department of Hematology Senior Lecture
- 2009/04 - 2012/03 Nagasaki University Hospital Clinical Oncology Center Vice Director
- 2001/03/01 - 2009/12/31 Nagasaki University Graduate School of Biomedical Sciences, Department of Hematology, Assistant Professor
- 2001/03/01 - 2009/12/31 , Nagasaki University Graduate School of Biomedical Sciences, Department of Hematology, Assistant Professor
- 2007/04 - 2009/12 Nagasaki University Department of Hematology Assistant Professor
- 2003/04 - 2007/03 Nagasaki University Graduate School of Biomedical Sciences
- 2001/03 - 2003/03 Nagasaki University School of Medicine
- 1998/04/01 - 2001/02/28 , Nagasaki University, Department of Hematology, Senior Resident
- 2000/06 - 2001/02 Faculty of Medicine, Nagasaki University Department of Hematology senior resident
- 1999/10 - 2000/05 恵寿病院 内科 常勤医師
- 1998/04 - 1999/09 Nagasaki University School of Medicine
- 1996/04/01 - 1998/03/31 Sasebo City General Hospital, Staff
- 1996/04 - 1998/03 佐世保市立総合病院 血液内科 副医長
- 1994/01/01 - 1996/03/31 National Cancer Center Hospital, Department of Hematology, Staff
- 1994/01/01 - 1996/03/31 , National Cancer Center Hospital, Department of Hematology, Staff
- 1994/01 - 1996/03 国立がんセンター中央病院 血液内科 医員
- 1993/09/06 - 1993/12/31 , Nagasaki University, Department of Hematology, Senior Resident
- 1993/09 - 1993/12 Nagasaki University School of Medicine
- 1992/09/01 - 1993/09/05 Kushiro North Hospital, Staff
- 1992/09 - 1993/09 釧路北病院 内科 常勤医師
- 1991/06/01 - 1992/08/31 , Nagasaki University, Department of Hematology, Senior Resident
- 1991/06 - 1992/08 Nagasaki University School of Medicine
- 1990/06/01 - 1991/05/31 National Nagasaki Center Hospital. Resident
- 1990/06 - 1991/05 国立長崎中央病院 研修医
- 1989/06 - 1990/05 Nagasaki University School of Medicine