so whats the deal with pain management facilities? how do they work?

so ive have been on oxycodone for about 4 years on and off and the past year straight from a failed back surgery. when i lived in ohio my Dr gave me pain meds, then i moved to Virginia and my new Dr just looks at my record and see's ive tried literally everything i can and gives me pain meds and then i moved back to ohio and got a new Dr because my old one moved and he did the same. last summer i was nearly off them then i re-injured my back and worked my way up to 20mg oxycodone IR 4 times a day. but out of nowhere my Dr cant write scripts for pain meds from some DEA mess so i ran out of my pain meds and am having really bad withdraws and my dr office told me the only way to get my meds is to go to a pain management facility. but that can take weeks to get in, i might go to the ER but i called and they said they really cant do much. Does pain management Dr's mainly just give you pain meds or what? i have no clue, ive been on every thing form tylenol #3 to Fentayl and oxycodone ir is the only thing that gives me any quality of life, i am literally stuck in bed for 18+ hours a day without pain meds.