Guidance Needed

My 7-yr old nephew has recently been diagnosed with ADHD and is going to be starting medication soon.  He was recently suspended from school for "inappropriately touching" three girls.  The school has taken a very agressive stance about allowing him back into school, requiring a psychological evaluation, etc.  The psychologist that my nephew is going to will not participate, and the school's suggested "counselor" will not handle children in their county.  Does anyone have a suggestion as to who we can contact to get this boy some help?  It seems that everyone we go to for help is slamming the door in our faces, and we need to get this boy back in school.  I know he can't be the only child to ever have this problem, but the reaction we are getting is incredible.  I would appreciate any assistance or guidance you can give me and my family...