1999 – 2006 Assistant Professor, Department of Otolaryngology Faculty of Medicine, Niigata University

2006 – 2012 Lecturer, Department of Otolaryngology Faculty of Medicine, Niigata University 

2012– 2015 Associate Professor, Department of Otolaryngology Head and Neck Surgery Faculty of Medicine, Niigata University

2015-2017 Associate Professor, Department of Otorhinolaryngology Jikei University School of Medicine

2017- Present Professor and Medical Director, Department of Otorhinolaryngology Jikei University School of Medicine