Oikawa Clinic is a medical clinic primarily specializing in internal medicine, located on the 2nd floor of the Oikawa Medical Mall in Sugamo, Toshima Ward, Tokyo. The clinic operates on weekday and Saturday mornings, and weekday afternoons. Closed on Tuesdays, Sundays, and holidays. The primary department is internal medicine, and endoscopic examinations including gastroscopy and colonoscopy are available by appointment on Monday, Wednesday, Friday, and Saturday afternoons. The facility offers Mounjaro injections as a new obesity treatment method. This self-injection treatment is administered once weekly at the patient's own expense, with physician follow-up during the injection period. The facility is equipped with a parking lot, barrier-free access, and electronic payment support. English language services are also available. While appointments are generally recommended, walk-in consultations may be possible in some cases, providing an environment where direct consultation is available.