Had a positive experience here for a CT scan. But what was most impressive was that, even with a crowded and noisy waiting room, I was taken into the testing facility within 10 minutes of my check-in (a couple minutes before my scheduled appointment), and they even apologized for the 10-minute wait. I have no idea what they do to make it possible, but obviously they are adamant about seeing patients on time, and for a large medical facility these days, that's practically unheard of.
I haven't had a lot of radiology in my day (thankfully), so I'm limited on what I can compare it to, but clearly their attitude toward customer service is one-in-a-million, and for that I can't overstate what a welcome surprise it was.