Matsunaga Clinic is a community-based internal medicine clinic located in Takahashi Minamicho, Shimizu Ward, Shizuoka City. The clinic operates on Monday mornings (9:00–12:00) and afternoons (15:00–17:00), concentrating its services on one day per week. In addition to general internal medicine consultations, the clinic offers specific health checkups, Shizuoka City National Health Insurance health examinations, and health screenings under the Late-Stage Medical Care System for the Elderly, supporting health management across a wide range of age groups. Cancer screenings and various tests for stomach cancer, colorectal cancer, prostate cancer, and hepatitis (types B and C) are also available, contributing to preventive healthcare for local residents. Influenza vaccinations are offered to both patients aged 65 and older and those under 65. The facility is equipped with a parking lot for convenient access by car, and its barrier-free design ensures a comfortable environment for individuals with physical disabilities. English-language support is also available, allowing patients with limited Japanese communication skills to visit with confidence. The clinic is a member of the Shizuoka City Shimizu Medical Association (a general incorporated association), playing a role in the local medical network.