The Hamamatsu City Nighttime Emergency Room is located in Denma-cho, Naka-ku, Hamamatsu City, Shizuoka Prefecture, and serves as an emergency medical facility established to handle sudden illnesses and injuries during nighttime hours when regular hospitals and clinics are closed. Specializing in internal medicine, it fulfills a public role in providing emergency initial care during nighttime hours. Core operating hours run from 8:00 PM to 7:00 AM the following morning, with additional hours available during daytime (2:00 PM to 6:00 PM) and early evening (8:00 PM to midnight) in some cases. As noted in the emergency medical information published by the City of Hamamatsu, this facility is positioned as an "emergency room for sudden illness or injury during nighttime hours when hospitals and clinics are not open," with the primary purpose of providing initial care on an emergency basis only. For this reason, patients are encouraged to follow up with their regular healthcare provider the next day. English-language assistance is available, making it easier for non-Japanese speakers to communicate their symptoms. The facility also features an on-site parking lot for those arriving by car, and is fully accessible for individuals with physical disabilities.