There is Gwak Internal Medicine Clinic in Changseong-dong, Jongno-gu.

It is about a 500-meter walk from Gyeongbokgung Station in Jongno-gu. It's a bit far from the subway station, but there is a bus available. The director is a woman in her middle age or older. She speaks gently and takes her time to provide medical care. Since there is no internal medicine clinic nearby, patients tend to come steadily. It is also a place that conducts health checkups, so if there are patients undergoing endoscopy or ultrasound, you may have to wait a lot. Still, it is a friendly hospital.