Looking for a psychologist with ADHD speciality

We are looking for a psychologist for a six year old girl who may have ADHD. We'd like to find someone who works well with children and is very knowledgeable about ADHD. It would be great if he/she uses Cognitive Behavioral Therapy and has some experience working with bright children. We can get to appointments in Berkeley, Oakland, Orinda, Lafayette, and Walnut Creek.