Located in Hyakunincho, Shinjuku-ku, Tokyo, Haruyama Memorial Hospital, a medical corporation by Koueikai, is a hospital specializing in internal medicine. This clinic offers services in multiple languages, including English and Korean, and accepts various payment methods such as credit cards, debit cards, and electronic payments. It also features an on-site parking lot and comprehensive barrier-free accessibility. The facility is closed on Sundays, holidays, January 1-3, and December 30-31.