Georgia is one of those states that has no protection at all for Surprise Billing. Our Insurance commissioner's office advised me that it's up to me to be sure all providers are in-network, but had no idea how I might do that. I intend to write something along the lines of "I specifically decline service from providers who not in network with our insurance plan". The may show us the door, but, HOW in heaven's name are we supposed to know who is in network and out of network if we have no idea who they are?
That should do it.
You'll know who the anesthesiologist is before he's wheeled in. If he's not on your plan, show him the letter. Tell him if he can't find someone on your plan "we'll just reschedule to when you can".
I know that would definitely be a hassle. But it'd get the point across.