How do I get an ID #, so I can book appt with a provider that requires one

Only providers do.  

then opening a review.

It's up at the start of the review.

Not that it means too much.  You can sort of tell how long the person has been a TER member and that's about it.

But you are correct, I doubt the provider wants his # - she probably said she wants his "TER ID", meaning his handle, so she can look at his history. If she DID ask for a number, she just doesn't know what she is doing

I'm exploring it with admin right now

I made the mistake of messaging admin.

thanks all