I have one to add, the first for Wisconsin!
Dr. Michael Wenninger
Spartan Animal Hospital
4811 Larson Beach Rd.
McFarland, WI 53558
(608) 838-6115
http://www.spartananimalhospital.com/
Dr. Wenninger has bred ball pythons in the past and currently breeds retics. He was therefore very comfortable handling my ball python while doing a wellness exam that included everything from weighing her to examining her heart with an ultrasound. He and his friendly staff happily answered all of my questions and confirmed that the research I had done on BP husbandry was accurate. I plan to take my Russian tortoise in for his wellness exam as well, and Dr. Wenninger mentioned that he enjoyed working with tortoises. He also comes highly recommended by both the Madison Area Herpetological Society and Reptile Rapture, a local reptile supply store.