- 2012/04 - 現在 Department of Functional Morphology, Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
- 2012/04/01 - Department of Functional Morphology, Division of Cell Regeneration and Transplantation, Nihon University School of Medicine
- 2009/11/01 - 2012/03/31 Professor, Department of Medical Science, Division of Cell Regeneration and Transplantation
- 2009/11 - 2012/03 Professor, Department of Medical Science, Division of Cell Regeneration and Transplantation
- 2007/04/01 - 2009/10/31 Associate Professor, Division of Cell Regeneration and Transplantation, Advanced medical Research Center, Nihon University School of Medicine
- 2007/04 - 2009/10 Associate Professor, Division of Cell Regeneration and Transplantation, Advanced medical Research Center, Nihon University School of Medicine
- 2005/04 - 2007/03 Associate Professor, Division of Cell Regeneration and Transplantation, Advanced medical Research Center, Nihon University, School of Medicine
- 2002/11 - 2005/03 Assistant, Division of Cell Regeneration and Transplantation, Advanced medical Research Center, Nihon University School of Medicine
- 2002/09 - 2002/10 Assistant, Division of kidney and Endocrinology, Department of Internal Medicine, Nihon University School of Medicine
- 1999/04 - 2002/08 Uppsala University Department of Genetics and Pathology Post Doctor
- 1997/06 - 1999/04 Research resident, Second Department of Internal Medicine, Chiba University School of Medicine
- 1990/07 - 1997/06 Assistant, Second Department of Internal Medicine, Nihon University School of Medicine
- 1989/08 - 1990/06 Internal Medicine, National Kofu Hospital
- 1987/05 - 1989/07 Assistant, Second Department of Internal Medicine, Nihon University School of Medicine