Jackie, that stinks! ... Don't pay that bill until you try all options and appeal all over the place! You have rights, too!!
There may be an ombudsman type position with your insurance carrier to help you sort through this. It's possible the doctor who did the scope could be jeopardizing their relationship with the carrier by failing to warn you that the anesthesiologist might not be covered. I wouldn't be afraid to use that leverage if it comes down to it. Your state's insurance regulation department or attorney general, may also have an office to help with consumer problems like this. Chances are that if you perservere, either the insurance carrier or the doctor's office will make it right.
Thanks for the support, advice and prayers, I sent in my appeal and will be sending a letter to my gastroenterologist where I had it done with my situation, I don't understand how this all could even be possible one in network and one out of network working under the same roof and same procedure..it doesn't make any sense, fiscally speaking...but that's just me.again thanks!