Tsuchiya Cardio Clinic is a clinic operated by Hanagaki Internal Medicine Hospital, located in Higashimamada, Oyama City, Tochigi Prefecture, specializing in internal medicine for cardiovascular diseases. The clinic primarily focuses on heart conditions, treating cardiovascular disorders including angina, myocardial infarction, valvular disease, and arrhythmia. Opened in July 2023, the clinic offers English-language services, provides parking facilities, and is fully barrier-free. The clinic is closed on Wednesdays and Sundays. The clinic also maintains a clear policy on disclosing medical records, ensuring a transparent healthcare system.