Nishikawa Internal Medicine & Gastroenterology Clinic, located in Katsuyama-cho, Matsuyama City, Ehime Prefecture, is a medical facility providing outpatient care focusing on gastroenterology and general internal medicine. The clinic specializes in stomach and colon endoscopic examinations and also accommodates nasal gastroscopy. For endoscopic examinations, a method with minimal pain and less likelihood of nausea is adopted, and the clinic features the ability to remove polyps on-site. Consultation hours are from 9:00 to 12:00 and from 15:00 to 18:00, with the clinic closed on Sundays and public holidays. For cases requiring hospitalization or advanced specialized treatment, a cooperative system with other medical facilities and core hospitals is established. The clinic also provides home medical care and house calls, and conducts health checkups and comprehensive medical examinations. Additionally, the clinic serves as an implementing agency for Matsuyama City's stomach cancer screening (gastroscopic screening). The facility is equipped with parking and barrier-free access, and offers an environment where English communication is available.