Children's Hospital of Wisconsin has a Dermatology Clinic. You can find it here
Dermatology Clinic at Children's Hospital of Wisconsin
http://www.chw.org/display/PPF/DocID/9999/router.asp
There are two doctors listed at the bottom of the page. I have heard(on this board) good things about Dr. Drolet.
I live in Wisconsin, also, and love the Docs and Staff at CHW.
They're helpful, and they explain everything.
Good luck
Rivka