Having succeeded to his father's name Ryosen, he became an exclusive doctor to the quarters of foot soldiers in the Edo bakufu (Japanese feudal government headed by a shogun), and after the Meiji Restoration, he served as a medical officer in the Imperial Japanese Army.
父を継ぎ良仙と改名し、幕府歩兵屯所付医師となり、維新後大日本帝国陸軍軍医となる。