- 1995 - 2005 広島大学医学部附属病院第三内科 講師
- 1995 - 2005 Third Department of Internal Medicine, Hiroshima University School of Medicine, Assistant professor
- 2005 - - 広島大学大学院医歯薬学総合研究科病態探究医科学講座脳神経内科学 助教授
- 2005 - - Department of Clinical Neuroscience and Therapeutics, Division of Integrated Medical Science, Hiroshima University Graduate School of Biomedical Sciences, Associate professor
- 1987 - 1995 広島大学医学部内科学第三 助手
- 1987 - 1995 Third Department of Internal Medicine, Hiroshima University School of Medicine, Research assistant
- 1985 - 1987 米国エール大学医学部神経内科 研究員
- 1985 - 1987 Department of Neurology, Yale University School of Medicine, USA, Postdoctoral fellow
- 1984 - 1985 東京都立神経病院神経内科 医師
- 1984 - 1985 Department of Neurology, Tokyo Metropolitan Neurological Hospital, Medical staff
- 1982 - 1983 鹿児島市立病院第一内科 医師
- 1982 - 1983 First Department of Internal Medicine, Kagoshima City Hospital, Medical staff
- 1980 - 鹿児島大学医学部附属病院第三内科 医員
- 1980 - Third Department of Internal Medicine, Kagoshima University School of Medicine, Junior resident