Personally I am able to use my PCP for pain management but it's one area where he's had extra training and continues to go to conferences to learn how to help his patients. I feel very lucky. So, I haven't been to a PM doc. I've seen others talk about it and most have good experiences and some have nightmares to share. But, remember that if things are going good it's not as likely we'll get online and rave about it as it would be if things were awful. So you will see an unbalanced number of people with problems. With that said....If you find someone you really like then it might be worth the drive, but if it's just so-so or awful then you might consider changing. I would urge you to tell them you are changing because of the commute because some will start to wonder if you are doctor shopping if you don't have a valid reason.
If you have a teaching/university hospital anywhere near you they most often have PM clinics and are on the front edge of new treatments. If I had to drive some distance I'd prefer one of these.
I know this doesn't answer your question but I thought I'd pitch in a few cents.
"Knowledge is knowing that a tomato is a fruit, but Wisdom is knowing not to put it in a fruit salad."
(> <) Co-Moderator Fibromyalgia & Chronic Pain Forums
Fibromyalgia, PTSD, UC, Diabetic on insulin, collapsed disk, arthritis scattered around and a few other delights.