There are a couple of doctors listed here:
You'll have to call and see if you feel they are appropriate to treat your son. I know from your posts how on top of this you are and you'll find the right doctor there. Other patients might post a recommendation, but after as many treatments as your son has had, you could probably just call a doctor and tell them what needs doing! LOL!!
How far is Little Rock from Atlanta? It might be worth it, if your insurance will cover and you have the time and resources, just to stay in your comfort level for a bit.
When's the big move???