I mentioned on one of the other threads, but The Cat Doctor is a cat only practice in Milwaukee. One of the smartest vets I've been to, encourages home testing and insulin management, doesn't push Rx foods. Has a lot of diabetic clients because that's where everyone around here ends up when their old vets give them the run around.
When my cat had DKA, I suspected something was seriously wrong (like emergency) and my former vet "couldn't fit me in for 3 days". That's when I found my current vet.