Nishiyama Clinic is located a 7-minute walk from Nankai Electric Railway Koya Line "Sayama" Station and provides internal medicine services in Ikejiri-Jiyugaoka, Osaka-Sayama City, Osaka Prefecture. The clinic is open Monday to Friday from 9:00 AM to 12:00 PM and 4:30 PM to 7:30 PM, with closures on Wednesday afternoons, Saturday afternoons, Sundays, and holidays. The clinic offers English services, has 5 parking spaces, and is barrier-free. In preventive medicine, the clinic provides influenza vaccinations without appointments: 3,500 yen for children aged 6 months to under 13, 3,500 yen for adults aged 13 to 64, and 1,000 yen for seniors aged 65 and over eligible for municipal subsidies. Since March 2023, the clinic accepts My Number cards for health insurance. As a medical institution eligible for the Medical Information and System Infrastructure Enhancement Allowance, the clinic operates a medical system utilizing medication information and specific health checkup data. As a primary care physician, the clinic listens attentively to patients and provides accurate diagnosis and treatment to support healthy living in the community.