Assessments for autism spectrum disorders? Which places in the u.S. Don't over-diagnose or under-diagnose?

See below. If there are concerns regarding any developmental issue, first stop is at the pediatrician's for a full exam and history (including development). If the pediatrician agrees with your concern, the next step is with either a pediatric neurologist or developmental-behavioral specialist for further evaluation and management. As long as a complete eveluation is done, there's no need to travel elsewhere.
UI. multi-disciplinary teams like this one perform thorough assessments of overall development as well as diagnostic evals for autism. The appt. Is from 8 am to ~ 1 pm. Prognosis in autism depends on level of cognition, degree of autism & early response to behavioral & educational therapy.