I went to Desert Valley to get an Upper GI screen. I got lost on the way (dang google maps), I called and the receptionist gave me great directions.
The test itself is pretty gross, you have to drink Barium and roll around like a guinea pig while they xray your stomach. The nurse and the xray tech were both really nice and friendly and explained everything along the way.
If you find yourself in a situation where you have to get a GI screen, I would recommend Desert Valley. The staff was polite and professional and made me an uncomfortable experience almost pleasant.