Located in Koizumi, Fujinomiya City, Shizuoka Prefecture, Oikawa Clinic is a gastroenterology clinic with excellent accessibility, about 6 minutes by car from the Shin-Fuji IC. This facility handles gastrointestinal diseases such as stomach and colon camera examinations, polyp removal, and hemorrhoid treatment. Transnasal endoscopy is used for stomach examinations, allowing conversation during the procedure and enabling immediate return home as sedatives are generally not used. Colonoscopy procedures are performed gently to reduce burden, with a policy of removing polyps whenever possible. Same-day surgery is available for anal diseases such as hemorrhoids and hernias, with individual rooms available for post-operative rest. The facility is equipped with 16 parking spaces, is barrier-free accessible, and supports multiple languages including English and Korean. Referrals to affiliated hospitals or preferred medical institutions are also provided as needed.