Oh, and as a side note, the phone number Anthem gave me for the MRI place was not even close to the right number. I called it, and whoever answered told me that I had called a hospital in Goshen instead of Plymouth (40 miles away), they weren't affiliated with each other at all, and she didn't know the number that I needed. I told her Anthem gave me the number, and she sighed: "Oh, yeah, we get that a lot." Then she pulled out a phone book and tried to look it up for me. She found the number of a hospital in LaPorte (40 miles in a different direction), but at least they were affiliated. They gave me the number of the MRI place. The number was nowhere to be found online.
But in a stunning reversal of fortune the most expensive place originally quoted to me ended up being the cheapest. The guy who looked it up must not have seen that Anthem has a contract with this MRI place, taking the price down from $1800 to $400. I learned this from the MRI lady on one of the phone calls before I got on her nerves. And this place is local! So that's a total win. Hooray!