Matsuo Clinic, operated by Medical Corporation Matsuo, provides internal medicine services in Hikari-cho, Yao City, Osaka Prefecture, and offers English language support and barrier-free facilities. Dr. Hiroshi Matsuo examines patients on Tuesday and Friday mornings by appointment only, specializing in arteriosclerosis, venous thrombosis, lymphedema, and other conditions. The clinic is notable for adopting wet dressing therapy without disinfectants for wound treatment, and patients can check consultation status through the reservation website. Crowding is expected on Saturdays. For testing, the clinic offers self-funded urine tests for cancer risk screening of ovaries, breast, stomach, colon, lung, pancreas, and esophagus, while blood tests can assess risks for pancreatic and colon cancer. Pneumococcal vaccinations are also provided by appointment.