Masuya Clinic is a medical facility located on Toyoshima Island in Kure City, Hiroshima Prefecture, in the center of the Akinada Tobishima Kaido cycling route. In the lush green environment of the island, they offer Internal Medicine, Gastroenterology, General Surgery, and Proctology, with specialized medical care aimed at anal diseases. The clinic's philosophy includes serving as the community's primary care physician, cooperating with regional network hospitals to provide appropriate medical care, and delivering specialized medical services. They aim to be a clinic where patients can feel at ease. A doctor is available on Sundays to handle emergencies. Home visit medical care is also provided for those who have difficulty coming to the clinic, including Sunday visits. They are prepared to respond to cases of illness or injury while cycling. Designated as a medical institution for diagnosis and examination since October 28, 2020, they implement spatial infection prevention measures. The facility is equipped with a parking lot and barrier-free features, and also provides English-language services.