A famous internal medicine clinic near Cheonan Terminal??

I heard there was a famous internal medicine clinic near Cheonan Terminal before. Do you know where it is? I don't usually go to hospitals, but I went there once before and I don't remember well. I heard that the doctor was good at treating patients and that the medicine worked well, so I got better quickly, so I went. But now that I'm trying to go again after a long time, I can't remember.