1972 : Graduated Nippon Medical School

1974 : Gastroenterological Research Associate of Saitama Medical University

1977 : Part-time Lecturer of Internal Medicine at Josai Dental University

1977 : Vice Director if Asahigaoka Hospital Sekijinkai Medical Corporation

1983 : Identification of Insulin in the Human Pancreatic Juice

1987 : Visiting Scholar of The Mount Sinai Hospital, USA

1993 : General Manager if Internal Department at Mizuno Hospital Shouaikai Medical Corporation

1996 : Established Shin Nihonbashi Ishii Clinic Koujinkai Medical Corporation

2011 : International patent acquired
             *1: EU (10 countries)
             *2: Russia, Australia, Hong Kong, Singapore, Taiwan
             [Patent title]
             *1:’A prophylactic agent protecting against atherosclerosis derived from fish skin collagen.’
             *2:’Vascular aging suppressant and anti-aging agent derived from fish skin collagen’