Faculty of Medicine, Kyoto University, 1986-1990.
Research Fellow at Division of Head and Neck Surgery, UCLA, 1999-2000.
Research Fellow at Division of Head and Neck Surgery, University of Wisconsin-Madison, 2001-2003.
Assistant Professor at the Department of Otolaryngology-Head & Neck Surgery, Kyoto University, 1998-2003.
Associate Professor at the Department of Otolaryngology-Head & Neck Surgery, Kyoto University, 2005 to 2016.
Professor and chair, Department of Otolaryngology Head and Neck Surgery, Kyoto Prefectural University of Medicine, 2016-