Founding member of the Ashikari Breast Center in 1988. He was Chief of The Breast Service at Memorial Sloane Kettering Cancer Center in the 1970’s and 80’s. He has written the seminal research papers on Paget’s disease, Ductal Carcinoma In-Situ (DCIS), Lobular Carcinoma In-Situ (LCIS), breast cancer in men, and breast cancer in pregnancy. He was one of the first surgical oncologists to practice in the lower Hudson Valley. His breast center was the first to become nationally accredited in the New York area.
He emigrated from Japan in 1970, but has always maintained his cultural roots. He is very active in Japanese medical societies as well as being a United States mentor for Japanese medical students from his alma mater Keio University. He is also on the board of Keio High School in Purchase, NY where he supports the educational activities of the younger generation. In 1996, he was awarded the highest honor a non-citizen can be given from the Emperor of Japan.