B.M.
Hello, Mommy -
It's a bit out of your way, but there's a program in La Canada that helps such kids with social skills; they meet once a week after school. The program director, Dr. Peter Gero, also maintains a private practice in La Canada for kids with ADHD and their parents. We've done both private practice and social skills camp with him and have benefited greatly.
http://www.tomsawyercamps.com/blast.html
Best of luck!