Masuyama Clinic is a community-based clinic located in Sarado, Otawara City, Tochigi Prefecture. The clinic provides internal medicine as well as respiratory, cardiovascular, allergy, pediatrics, and dermatology services, and also offers herbal medicine and sublingual immunotherapy. Clinic hours are 8:30 AM to 5:45 PM from Monday to Wednesday and Friday, and until 12:00 PM (noon) on Thursdays and Saturdays. The clinic is closed on Sundays and holidays, and is also closed on the third Thursday of each month in 2025. Closure dates include August 13-16, December 29-31, January 1-3, October 16-18, and other specific dates. English services are available, creating a welcoming environment for international patients. The clinic has 22 parking spaces, making it convenient for patients arriving by car. Information on vaccinations is also provided, catering to a wide range of healthcare needs.