He is also remembered for his pioneering work in the establishment of Japan's first college of nursing, as well as for public health, child welfare and preventative medicine programs.

Due to Teusler's reputation as a gifted surgeon and skill as an administrator and fundraiser, the hospital grew and expanded rapidly.

Teusler's many supporters in the United States generously contributed for a complete rebuilding of the hospital facilities in the wake if the Great Kantō earthquake in 1923.

With the rank of Lt Colonel, Teusler also served as a Commissioner of the Red Cross, with Allied Forces in Vladivostok, Siberia from 1918 - 1921.

Teusler was awarded the Fifth Star of the Order of the Rising Sun by the Japanese Government for his contributions to public health and the development of modern medical practice in Japan.