Located in Izumi, Suginami-ku, Tokyo, Iritani Internal Medicine Clinic (Katsueikai Medical Corporation) offers internal medicine, cardiology, otolaryngology, and dermatology services. The internal medicine department manages blood pressure and cardiovascular conditions, while the cardiology department specializes in evaluating patients with unstable blood pressure, palpitations, or shortness of breath, providing specialized assessment and treatment in collaboration with university hospitals when necessary. The otolaryngology department focuses on sinusitis treatment, offering care with emphasis on symptom progression for cases resistant to over-the-counter medications or self-treatment, and provides sinus CT evaluation when needed. The dermatology department treats various skin conditions primarily hives and atopic dermatitis for children and adults, with treatment tailored to symptom progression and living environment. The clinic has multiple physicians including respiratory specialists, gastroenterology specialists, and female doctors, allowing patients to choose a primary care physician who suits their symptoms and preferences. Appointment-based system with priority given to appointments; during morning clinic hours from 12:30 to 13:00, only patients with appointments are seen. Reception opens 10 minutes before clinic hours. Closed on Sundays and holidays. Credit cards and electronic payments are accepted.