Seeking a child psychiatrist who accepts PHCS insurance in the Manassas, Va area

I have a 14 year old daughter who was diagnosed with schizo-affective disorder and OCD in March of 2007. We are new to this area and I can't seem to find a child psychiatrist who accepts our insurance. She's on an anti-psychotic drug and I need to have her medicine checked out because I think she's having side affects from it. When I call the list of doctors my ins. company sent us I get nothing but automated messages. I'm becoming very frustrated over the whole ordeal. Does anyone have any suggestiions?