Yamaguchi Internal Medicine Heart Clinic is a clinic located in Kamisaginomiya, Nakano Ward, Tokyo, with a cardiologist serving as the director. Since opening in May 2017, the clinic has been responding to medical needs accompanying the rapid transformation of Nakano Ward. The director, who holds specialized qualifications including certification as a general internist from the Japanese Society of Internal Medicine and as a cardiologist from the Japanese Circulation Society, draws on extensive experience treating inpatients and emergency patients in the cardiology department after graduating from Saitama Medical School, providing comprehensive care that leverages specialization in cardiovascular diseases. Clinical departments cover internal medicine, cardiology, diabetology, respiratory medicine, lifestyle diseases, smoking cessation, health checkups, vaccinations, travel medicine, sleep apnea, home visit care, and paid medical services. The clinic addresses conditions ranging from hypertension, diabetes, hyperlipidemia, sleep apnea, and smoking cessation control to preventing progression to myocardial infarction, angina, cerebral infarction, emphysema, and lung cancer. In addition to daily health concerns, the clinic handles headaches, fever, sore throat, cough, abdominal pain, vomiting, diarrhea, constipation, anemia, fatigue, gout, hyperuricemia, obesity counseling, kidney disease, and also provides Kampo herbal medicine prescriptions. For concerns about influenza and COVID-19, the clinic has established a fever clinic offering examinations and testing through a separate route from general consultations. Saturday hours are 9:00-11:30 AM and 1:30-4:30 PM. Closed days are Thursday, Sunday, holidays, with additional closures during year-end/New Year period and spring/autumn seasons. The clinic provides parking and barrier-free accessibility, accepts credit cards, debit cards, and electronic payments. English-speaking consultation is available, and as a community-based family doctor, the clinic aims to provide continuous medical care including hospitalization avoidance.