Located in Azabujuban, Minato City, Tokyo, HOLON Toriizaka Clinic Otolaryngology & Allergy Department offers services in English, accepts credit cards and electronic payments, and provides parking and barrier-free facilities. The clinic offers sublingual immunotherapy; for prescriptions requiring no procedures or medication changes, patients can revisit without an appointment by presenting a priority ticket. They also perform paranasal sinus catheter treatments, with new patients able to book appointments after their initial examination. For laser treatments, there may be limits on the number of patients based on anesthesia availability, and treatment is generally available for those who can undergo procedures on both nostrils. The clinic conducts the misignal test, which can assess cancer risk from a urine sample alone, and has implemented a system where general appointments can be booked from two weeks before the desired examination date. From April 2026, examinations are conducted every Saturday by Dr. Yani Takashi. The use of electronic medical records ensures patient information is carried over. As operating hours may differ from regular days and there may be temporary closures, verification is necessary. The clinic is closed every Wednesday, the fifth Sunday, and holidays. The clinic also promotes the use of generic medications and supports healthcare digital transformation through electronic prescriptions and electronic qualification verification.