Matsuo Clinic, operated by Medical Corporation Keikokai, is located in Hasami-cho, Higashisonogi-gun, Nagasaki Prefecture, offering primary care services centered on internal medicine. Consultation hours are 9:00 AM to 12:30 PM in the morning and 2:00 PM to 6:00 PM in the afternoon, with Sundays and public holidays closed. The clinic provides fever outpatient services for COVID-19 and influenza, where patients with fever or cold symptoms undergo telephone triage before being examined in a private room or in their vehicle. The facility has implemented an online eligibility verification system, allowing patients to share medical and insurance information by presenting their My Number Card at reception. Electronic prescriptions are also planned. The clinic offers specific health checkups, short-term comprehensive health screenings, and corporate health examinations, supporting community health management. Hasami-cho offers a subsidy program for shingles vaccines for those aged 50 and above, and vaccinations are available at the clinic. English assistance is available, and the facility is equipped with parking and barrier-free access, creating an accessible environment for many patients.