In pa, there are 2:
Dr Denish (interned with the breeder where I bought Digger 7 years ago) he is at Rhawnhurst Animal hospital, he also does Phila Zoo & Elmwood Zoo:
795 Bustleton Ave
215-333-8888
I am trying to find the info on the one that I had used in Bensalem one time, I wanted a second opinion, he was on street road, only went to him once but was very impressed...if I find his info I will post it.