Located in Taitado, Setagaya Ward, Tokyo, Ouchi no Doctor is a medical facility that provides comprehensive care primarily in internal medicine. With a specialized treatment system focused on diabetes internal medicine, it offers diabetes specialist care led by the hospital director, along with the Diabetes Ladies & Mothers' Clinic, general internal medicine treating lifestyle diseases and endocrine disorders, neurology, home medical support, and vaccinations. Nutrition guidance by registered dietitians is also well-developed, providing individualized recommendations for portion sizes and meal plans based on patients' dietary habits, as well as group nutrition guidance by disease. The facility is equipped with examination equipment, enabling rapid results for blood glucose, HbA1c, and thyroid hormones (FT3, FT4, TSH). Online medical consultations are also available, allowing hospital visits tailored to lifestyle. In addition to medical services provided in close cooperation with base hospitals, the facility offers convenient services such as English support, credit card, debit card, and electronic payment options, and barrier-free accessibility. The facility is closed on Sundays, holidays, and specific dates.