Located in Chitosedai, Setagaya Ward, Setagaya Chitose Clinic is an internal medicine clinic operated by the medical corporation Niji no Kai. The clinic provides patient-centered medical services and focuses not only on treating diseases but also preventing their onset from a preventive medicine perspective. Emphasizing lifestyle improvements through proper diet, exercise, and stress management, they also engage in innovative approaches using regenerative medicine. The clinical departments include general internal medicine, respiratory medicine, cardiology, gastroenterology, acupuncture, and general pain treatment using autologous adipose-derived stem cells. Clinic hours are from 9:00 AM to 12:30 PM and 3:00 PM to 6:30 PM on weekdays, with acupuncture available until 7:00 PM. The clinic is closed on Tuesdays, weekends, and holidays, as well as from December 29 to January 3 for the year-end and New Year period. The clinic accepts credit cards and electronic payments, and is equipped with barrier-free facilities. Niji no Kai, led by a medical team holding professional qualifications such as special membership in the Japan Gastroenterological Association and certified physician qualifications in the Japan Surgical Society and the Japanese Society of Gastroenterological Surgery, provides comprehensive medical care combining traditional Western medicine and pharmacotherapy with Eastern medicine, regenerative medicine, and alternative and complementary medicine.