1994-2009 Lecturer, Department of Otolaryngology, Head & Neck Surgery, Faculty of Medicine, University of Toyama, Toyama, Japan

2009-2012 Assistant Professor, Department of Otolaryngology, Head & Neck Surgery, Toyama University Hospital, Toyama, Japan

2010-2012 Clinical Associate Professor, Department of Otolaryngology, Head & Neck Surgery, Toyama University Hospital, Toyama, Japan

2012-2013 Clinical Professor, Department of Otolaryngology, Head & Neck Surgery, Toyama University Hospital, Toyama, Japan

2013- Professor, Department of Speech, Language and Hearing Therapy, Faculty of Health Science, Mejiro University, Saitama, Japan

2015- Clinic Director, Mejiro University Ear Institute Clinic, Saitama, Japan