Kawaguchi Internal Medicine Clinic, located in Mitsuhashi-machi, Yanagawa City, Fukuoka Prefecture, has been a community-based primary care clinic supporting residents' health since its establishment in 1946. The clinic relocated to its current address in Mitsuhashi-machi Takahata in 1969, and has continued to provide a wide range of medical services centered on internal medicine to this day. In addition to treating everyday conditions such as colds, hay fever, and allergies, the clinic places particular emphasis on managing lifestyle-related diseases including hypertension, diabetes, and hyperlipidemia. Specialized examinations such as gastroscopy and abdominal ultrasound are performed on-site, and a smooth referral system to nearby specialist medical institutions is in place for cases requiring more advanced treatment. The clinic also offers various health check-ups and vaccinations including influenza, and provides influenza tests and COVID-19 antigen tests for patients presenting with fever. English-speaking support is available, allowing patients who are not fluent in Japanese to visit with confidence. The facility is also equipped with a parking lot and barrier-free facilities, creating an accessible environment for a wide range of patients. Consultation hours are 9:00–12:00 in the morning and 14:00–18:00 in the afternoon, with the clinic closed on Sundays, public holidays, year-end/New Year holidays, and the Obon period.