how do you deal with ADHD and social immaturity?

My son, 11, yrs old, has ADHD, as we have traveld this long road and finally decided to put him on medication and changed them around; He now is on Concerta (18mg) and Celexa for anxiety.  Our main concern with our son, is not only the ADHD, but he is also socially immature.  We had to take him out of the school he was in for nine years, because every child in his class did not care for him and his antics.  He thinks he is being funny, by touching or saying inappropriate things.  The children have outgrown him!  He now started a new school.  One week and a half into it, he's starting again.  We had a conference with the Principal and teacher yesterday, and they are concerned that the kids will not put up with it (Hello!!!!!...we know that).  He is adjusting to the academics part of it, and although we are concerned about that, we are more afraid that once again, he'll alienate the children around him and the more they do that, the more he gets in their faces and bothers them.  Is there anyone one out there with any input or a similar story.  We are at our wits end.  I take him to the Psychiatrist today, possible his meds need to be upped.  Help!  Thanks to anyone who'll replay.  Rita