Located in Nishiasahicho, Nasushiobara City, Tochigi Prefecture, Onuma Internal Medicine & Gastroenterology Clinic provides medical services centered on internal medicine. The clinic performs painless gastrointestinal endoscopic examinations and employs a double-check system with multiple doctors to prevent missed lesions. Accurate diagnoses are made using CT scans and ultrasound examinations, enabling comprehensive treatment for the head, lungs, abdomen, and other areas. The clinic also treats various lifestyle-related diseases such as hypertension, diabetes, and dyslipidemia. Various health screenings are conducted, including specific health checkups, stomach cancer screening, colorectal cancer screening, prostate cancer screening, and lung cancer screening. CT examinations are also performed to support secondary screenings. Home visit medical care is available upon request from regular patients. The clinic is equipped with a parking lot and has barrier-free access. English-speaking services are available.