Once someone has been identified as being at risk, the minimum standard of care should be that you have access to a doctor who understands eating disorders, who understands the diagnostic criteria and the treatment options.
You should absolutely have access, if needed, to a psychiatrist who can assess for such co-morbid conditions as anxiety, depression, or a trauma-related disorder. You should have access to a therapist to work through some of the cognitive distortions around eating disorders, and have access to a dietitian to help you work through a food plan that will get you to a healthy weight for your body.