I recommend Kim Jung-chul Clinic located in Jung-gu, Daejeon.

This is a traditional Korean medicine clinic located near my hometown. I have been going there since I was a child, even during elementary school. I believe it is a clinic with a long history and skilled practitioners. Whether it's back pain, neck pain, or taking herbal medicine, they can handle anything. Originally, one doctor was working there, but recently I visited and saw two doctors working together. One is a graduate with a bachelor's, master's, and doctoral degree from Wonkwang University College of Korean Medicine, and the other is from Daejeon University College of Korean Medicine, so their credentials are impressive, right? ^^