DO NOT GO TO TEMPE ST LUKES.
I don't know why some of these reviews talk about a "friendly staff." Last time I was there was to take my girlfriend at the time in for extreme back pain at around 3AM. It took a while to get her in and when we were finally escorted to a room, I noticed used bandages, paper towels, etc. all over the floor. I asked the nurse to get us into a different room and suggested she or someone pick up the trash. "It is a hospital after all." After a snarky remark and a rude glare she escorted us to another, cleaner room.
Once the doctor showed up after over an hour he ran some tests and decided nothing was wrong and that she just needed some pain killers.