Koishikawa Yanagicho Clinic, located in Koishikawa, Bunkyo-ku, Tokyo, is a medical facility specializing in internal medicine. A key feature of the clinic is its appointment-only policy. This system is designed to reduce infection risks from crowded waiting rooms and ensure sufficient time for examinations and explanations. Appointments can be made by phone or online. Consultation hours are from 9:00 AM to 12:00 PM and 3:30 PM to 6:30 PM, with the clinic closed on Tuesdays, Sundays, and public holidays. In addition to internal medicine, the clinic offers pediatric care, providing a wide range of services including vaccinations, health checkups, and sublingual immunotherapy. The clinic places particular emphasis on preventive medicine, actively administering various vaccines such as the RSV vaccine, shingles vaccine, and pneumococcal vaccine. The facility is barrier-free accessible and supports multiple payment methods, including credit cards, debit cards, and electronic payments, reflecting its commitment to patient convenience. Internal medicine consultations are available every day except closing days, and as a community-based medical institution, the clinic serves patients across a broad range of age groups.