Kouetsukai Medical Corporation's Masuda Clinic is located in Koga City, Ibaraki Prefecture, approximately 10 minutes by car from JR Koga Station, serving as a community-focused clinic. The clinic primarily offers internal medicine services, along with neurosurgery, neurology, and rehabilitation departments, covering a wide range of medical specialties. Notably, they operate a specialized headache clinic on Mondays, Wednesdays, and Saturdays (phone reservation required), providing expert care for patients suffering from headaches, which is one of the clinic's distinctive features. Clinic hours are Monday through Thursday, 8:30-11:30 AM and 2:00-5:30 PM, with Saturday morning appointments only; closed on Fridays, Sundays, and holidays. Clinic Director Dr. Hiroshi Hamada's policy is "All patients are like my own family," and the entire staff is committed to providing compassionate, patient-centered care. The clinic offers various preventive vaccinations, including influenza and shingles vaccines, as well as health check-ups, making it a convenient choice for routine health management. The facility features barrier-free design with wheelchair-accessible restrooms and provides 20 parking spaces, creating an accessible environment for patients arriving by car. With English-speaking staff available and support for online eligibility verification using My Number cards, the clinic offers a highly convenient healthcare experience.