Located in Kasugacho, Nerima Ward, Tokyo, Toshima-en Coloproctology is a highly specialized clinic focusing on gastroenterology. The director holds specialist certifications from three medical societies: the Japan Society of Coloproctology, the Japan Gastroenterological Endoscopy Society, and the Japan Surgical Society, providing examinations and surgeries based on extensive experience and expertise. The clinic performs over 400 anal surgeries annually and conducts over 1,200 colonoscopies each year, establishing high specialization through these achievements. For examinations and surgeries, sedatives and anesthesia are used to minimize physical burden, ensuring patients receive treatment as comfortably as possible. The clinic is equipped with the latest endoscopic instruments, with colonoscopies providing detailed observation of the entire colon for early detection of polyps, inflammation, and cancer. Gastroscopy is also available, allowing direct observation of the esophagus, stomach, and duodenum for early detection and diagnosis of conditions such as stomach cancer, gastric ulcers, and reflux esophagitis. Facilities include 15 inpatient beds, with parking and barrier-free access available. Examinations are conducted on a first-come, first-served basis, with first-time patients requested to arrive by 11:30 AM or 5:30 PM. Infection control measures include visitor restrictions, and the clinic operates with a commitment to patient-centered care.