insurance again

First of all, take a deep breath. This is clearly just a SNAFU and while you may have to spend a bunch of time on the phone listening to muzak it will get straightened out.

Don't worry about your doctor -- this is not the first time that this has happened and they are going to know that things will get fixed.

If your insurance is through your employer you may be able to get help from your benefits office -- they are much less likely to be put on hold.

As you work through this KEEP RECORDS. When you called, who you talked to, what they said. Write down every single thing -- even the time on hold. This will be important if you end up having to go to your state insurance commissioner (although hopefully you will not get nearly that far.) It may be that somebody just checked the wrong box or read the wrong line so don't get dejected by my advice, solving it may not be that hard.

I checked with my insurer before to see if I needed any type of pre approval and they basically said anything they need must come from the physician.  You  gave them you insurance company, I would throw it back at the doctor and not wast time with the insurance company direct.  They should know what to do.  And I would emphasize stopping in the middle is not an option.

My experience has been that its customary for insurance companies to request confirmation of certain claims/health problems and to have their own consultants review the diagnosis, treatment, etc. I think they should so some checking, within reason. As has already been said, your specialist and primary care physicians deal with such requests regularly - and let thim respond to this one. Don't let this "blip" interfere with your focus on getting better.