Onitsuka Clinic, located in Gojo, Dazaifu City, Fukuoka Prefecture, is an internal medicine clinic that opened in October 2016. Director Dr. Ryo Onitsuka, who has had ties to this community since childhood, places community contribution at the core of his practice, providing medicine deeply rooted in the local area. The clinic covers general internal medicine, with a particular focus on endoscopic examinations. Gastroscopy allows precise observation of a wide range from the throat to the esophagus, stomach, and duodenum, enabling detection of a diverse range of conditions from inflammation to early-stage cancer. For colorectal cancer—reportedly the third leading cause of death in men and the first in women—the clinic actively promotes early detection and treatment through colonoscopy. Office hours are from 9:00 AM to 12:00 PM and 2:30 PM to 5:00 PM, with closures on Sundays, public holidays, year-end/new year, and Obon periods. English-speaking assistance is available, ensuring a comfortable visit for those unfamiliar with Japanese. Parking for 15 vehicles is available, and the clinic is conveniently located just a 4-minute walk from Nishitetsu Gojo Station.