Yuai Hospital, located in the Nangu district of Okaya City, Nagano Prefecture, provides medical care primarily focused on internal medicine. The hospital offers English-speaking services and accepts payments via credit cards and electronic payments. In addition to a parking lot, the facility is barrier-free, ensuring smooth movement within the premises. Closed days are mainly Sundays and holidays, with closures from August 14th to 16th and December 30th to January 3rd of the following year. The official website regularly updates monthly information on closed and clinic days, and provides details about influenza vaccines, self-pay vaccines, and health checkups.