angels, do you have an idea of where you'd like to have the evaluation done? Maybe you should make a shortlist of 3 or 4 places and call them??? Or, you can ask your doctor, but for me I would just find a few places I am interested in and call them for prices or a ball park range or like heygimm suggested find out what pdocs are in your insurance's network and call them...
are you interested in a psychological eval or physiological eval?? I think I may be confused about the nature of your question....if it's physiological, you may want to ask your doctor for referrals...even for psych evals you can ask your doc for referrals.
let us know how it goes, if you want to