Usui Clinic in Chitose-cho, Naka-ku, Yokohama offers internal medicine, cardiology, gastroenterology, pediatrics, and dermatology. Services include flu vaccines, childhood immunizations, and health screenings. The October 2025 renovation added waiting seats and an isolation room for infection control. With 28 years of history, the clinic has served approximately 34,000 outpatients and provided end-of-life home care for 34 patients. Appointments can be booked via smartphone, My Number cards are accepted for insurance, and English-speaking services are available. The facility also offers credit card and electronic payment options with barrier-free access.