Oarai Kaigan Core Clinic, located in Onuki-cho, Oarai-machi, Higashiibaraki District, Ibaraki Prefecture, is a medical clinic specializing in internal medicine. Oarai-machi is known as a resort area facing the Pacific Ocean, and this clinic serves as a facility supporting the daily medical needs of the region. It provides a wide range of internal medicine services, from handling acute illnesses such as fever, colds, and gastrointestinal symptoms to managing lifestyle-related diseases such as hypertension and diabetes. A notable feature of this clinic is its multilingual staff system, supporting English, Korean, and other languages. This ensures that patients who have difficulty communicating in Japanese can receive appropriate examinations and explanations. The facility is also fully barrier-free, designed with consideration for wheelchair users and elderly patients. With a parking lot available, patients can visit by private car even in an area with limited public transportation. The clinic is closed on Sundays, holidays, and year-end and New Year holidays (December 30 to January 3), serving as a clinic supporting the health of local residents mainly on weekdays.