Located in Horikiri, Katsushika Ward, Tokyo, Horikiri Itsumo Clinic is a medical facility specializing in internal medicine. Clinic hours are 9:00 AM to 12:00 PM and 2:00 PM to 5:00 PM on weekdays, with Saturday afternoon hours from 2:00 PM to 4:00 PM. This clinic features minimally invasive gastrointestinal endoscopy. For upper gastrointestinal endoscopy, transnasal examination and sedation are available. Lower gastrointestinal endoscopy is also performed with sedation to minimize discomfort. Simultaneous upper and lower gastrointestinal endoscopy examinations are possible. The clinic provides consultations for common cold symptoms, gastrointestinal symptoms, headaches, hypertension, and health checkup results. It also offers trauma examination and treatment, general dermatology services, and is equipped with blood tests, urinalysis, X-ray, ultrasound, and ECG. Vaccinations are available for influenza, measles-rubella, pneumococcus, shingles, tetanus, cervical cancer, and more. A web reservation system is in place, and same-day appointments are accepted. The clinic accepts credit cards, debit cards, electronic payments, and transportation IC cards, and has parking available. It is barrier-free and offers English-language services. The clinic maintains close collaboration with Tokyo Jikei University Katsushika Medical Center, a university hospital, and provides treatment in a clean environment through thorough staff education and hospital disinfection for infection control.