I definitely think the OP should seek the right professional advice! I can't really speak to what that would be in the US is all, which is why I suggested asking questions at the upcoming meeting with the person she is already consulting and going from there.

Neuropsychology is not really a recognised field here in Australia. In actual fact the psychologist I most recently took DD too was a US qualified neuropsych, though it was not mentioned or advertised in anyway and I wouldn't have known had I not read the certificates on his wall while paying my bill. And sadly we weren't that impressed with him in the end, the paed we took her to next was MUCH more on the ball. Though here the advice for developmental disorders is generally to go to a developmental paed.