Erin-
A few things you want to ask of a prospective therapist are: 1. How much experience do you have treating OCD and anxiety disorders? 2. How long have you been in practice? 3. What is your approach to treating OCD? 4. Do you believe in using just medications, just therapy, or medications combined with therapy? 5. Are you a member of the Associate of Cognitive Behaviorists?
These are questions I would ask if I was seeking a new therapist, and it's important to find someone you like. Let us know how your search goes.