Jim,
I actually had a 2 level ADR authorized two times .. first with a surgeon at UCSF and he had shoulder surgery and trial was stopped before my surgery was happening. 2nd time Surgeon in Dr. D's office didn't send back information to WC in timely manner (he had 3 months to submit information) so that authorization was off the table. Took 2 years to get a surgery authorized again and by then I wasn't a candidate for 2 level ADR.. rather ADR and fusion. At that point I was going to go back to the same surgical office but not with same surgeon. It may not have been the surgeon's fault but that didn't matter to me at the time.
Sometimes it's the Dr.'s office and sometimes the insurance company.. sometimes it's the patient
I don't think it will be the latter in your case. Hope you don't have to wait too long! Maria