Patterico also investigated and posted his email correspondence with Roxanna Mayer. The not-a-doctor WAS an Obama DELEGATE.
Also Patterico has screen shots of the altered caption of Lone Star Times describing her as a doctor.
http://patterico.com/2009/08/12/roxana-mayer-im-not-a-doctor-but-i-play-one-at-town-hall-meetings/