rozied...To add to what BV replied, here is a list of rehabs that are in your state....
Drug Rehab Pennsylvania
There are phone numbers listed so if that is a route you might consider, why not call a few and check them out?
You also might want to consider working with an Addictionologist since you have chronic pain issues.
Good luck and if you have anymore questions don't hesitate to ask/post/PM!
Jane