- 2013/01 - 現在 St.Marianna University School of Medicine
- 2012/04 - 2012/12 St.Marianna University School of Medicine
- 2009/01 - 2012/03 聖マリアンナ医科大学東横病院脳神経外科 准教授
- 2008/11 - 2008/12 - 聖マリアンナ医科大学脳神経外科 准教授
- 2008/11 - - St. Marianna School of Medicine, Neurosurgery, Assistant Professor
- 2008/03 - 2008/10 -10 昭和大学藤が丘病院脳神経外科 准教授
- 2008/03 - -10 Showa University, Fujigaoka Hospital, Neurosurgery, Assistant Professor
- 1999 - 2008 Showa University Fujigaoka Hospital, School of Medicine, Fujigaoka Hospital, School of Medicine
- 1999 - 2008 Showa University, Fujigaoka Hospital, Neurosurgery, Associated Professor
- 1996 - 1999 Showa University, Fujigaoka Hospital, Neurosurgery, Assistant
- 1995 - 1999 Showa University Fujigaoka Hospital, School of Medicine, Fujigaoka Hospital, School of Medicine
- 1999 - - Showa University, Fujigaoka Hospital, Neurosurgery and Emergency care medicine, Associated professor
- 1994 - 1995 東京医科歯科大学脳神経外科 助手
- 1994 - 1995 Tokyo Medical and Dental University, Neurosurgery Assistant
- 1987 - 1989 アメリカ国立保健衛生研究所 研究生
- 1987 - 1989 National Institutes of Health, USA. visiting fellow