Koyama Internal Medicine Clinic is a medical clinic specializing in internal medicine located in Higashi-Nippori, Arakawa Ward, Tokyo. In addition to internal medicine services, the clinic also provides specific health checkups for those covered by National Health Insurance or social insurance. The clinic is barrier-free accessible and offers English language services. Regular clinic hours are until 12:30 PM and until 7:00 PM, while health checkups and vaccine appointments are accepted until 12:00 PM and until 6:00 PM. Patients with cold symptoms can visit the reception during office hours. Since April 2023, My Number cards can be used as health insurance cards. Payment at this clinic is cash only; credit cards are not accepted. The clinic is closed on Sundays, holidays, year-end and New Year holidays, and during the summer break period.