I recommend Wonju Barun Oriental Medical Clinic.

I've been suffering from chronic pain in my shoulders, back, and neck since I've been sitting all the time since I was a high school student. Fortunately, I don't have a herniated disc, but I go to a Korean medicine clinic regularly for treatment. This is the place that works best, so I recommend it. It lasts about an hour, and it feels like I've received all the treatments I want. Haha.