I would check how the doctor’s staff submitted the claims. I have excellent insurance and my wife has one doctor that was contiually getting claims denied for an expensive treatment. I knew it was covered and worked with the insurer. We found out the office was using the wrong code to submit the claim. Sad to say the office never could get the claim thing worked out so my wife gets the treatment somewhere else.
Sometimes the office staff is not as good as other doctor’s office staff.