Judy, your doctor has some responsibility in this too....how much is he charging compared to the other local providers? As Frayda mentioned, those on a network panel with a carrier have to accept their fees which may be only about
60% of their charged amounts.
Some doctors charge rates that are double or 50% higher than the local "competitors." You may want to call around to other doctors and find out what they charge for procedures. You might also check to see if your plan has an out of pocket maximum, which would offer you some protection once the total has been reached.
As for the appeals, definitely appeal everything, it's your right. But be sure you have more information and documentation each time....eventually your appeals process becomes exhausted and if you get more info later, you won't be able to submit it for condsideration.