The Children's Hospital
The Children's Hospital in Denver, Colorado has an Eating Disorders Treatment Program. They offer support groups and a team approach. I can't tell if they support family-based therapy or not. But this practice-update article seems to suggest that they do: http://www.thechildrenshospital.org/news/publications/practiceupdate/2006/eating_disorders.aspx
The program's number is (720) 777-1234.