Kenwakai Yotsugi Clinic, a medical corporation foundation, is located in Higashi-Yotsugi, Katsushika Ward, Tokyo, specializing in internal medicine. The clinic is equipped with barrier-free facilities and provides English-language communication support. Closed on Sundays, public holidays, year-end and New Year holidays (December 29 to January 3), and the consecutive holidays in May (May 3 to May 5). The official website regularly updates information on each physician's days off and the substitute doctor system. Multiple physicians take turns providing medical care, and a substitute doctor system is in place to cover when physicians are absent.