- 2018/04 - Nippon Medical School Chiba Hokusoh Hospital Department of Anesthesiology Clinical Professor
- 2017/10 - 2018/03 Nippon Medical School Department of Anesthesiology Associate Professor
- 2014/08 - Nippon Medical School Chiba Hokusoh Hospital Department of Anesthesiology Director
- 2013/04 - 2014/07 Nippon Medical School Chiba Hokusoh Hospital Department of Anesthesiology Acting Director
- 2010/04 - 2013/03 Nippon Medical School Chiba Hokusoh Hospital Department of Anesthesiology Senior Assistant Professor
- 2006/04 - 2010/03 Nippon Medical School Department of Anesthesiology Senior Assistant Professor
- 2003/10 - 2006/03 Nippon Medical School Hospital Department of Anesthesiology Manager
- 2003/04 - 2003/09 Nippon Medical School Department of Anesthesiology Assistant Professor
- 2001/04 - 2003/03 Nippon Medical School Hospital Intensive Care Unit Assistant Professor
- 2000/12 - 2001/03 - 日本医科大学医学部麻酔科学教室 助手
- 1999/09 - 2000/11 スウェーデン・カロリンスカ病院・研究所麻酔科 客員研究員
- 1999 - 2000 Visiting Researcher, Dept. of Anesthesiology and Intensive Care Medicine, Karolinska Intstitute and Hospital, Stockholm, Sweden
- 2000 - - Assistant Professor, Dept. of Anesthesiology, Nippon medical school
- 1996/04 - 1999/08 Nippon Medical School Medical School
- 1996 - 1999 Assistant Professor, Dept. of Anesthesiology, Nippon medical school
- 1992/03 - 1996/04 Nippon Medical School
- 1992 - 1996 PhD Student, Division of Anesthesilogy, Faculty of Surgical Science, Graduate School of Nippon Medical School
- 1990/06 - 1992/03 Nippon Medical School
- 1990 - 1992 Research Fellow, Dept. of Anesthesiology, Nippon medical school
- Nippon Medical School
- Nippon Medical School Faculty of Medicine, Department of Medicine, Department of Anesthesiology Lecturer