When is someone who isn't qualified to diagnose autism--or anything else as far as I can tell--a "diagnostician"? And how does that not-qualified-to-diagnose-ician get appointed to the Maryland Commission on Autism as a diagnostician? Especially if that someone promotes dangerous treatments for children with autism, based on junk science?
One of the side-stories to develop out of The Maryland Board of Physicians suspending the medical license of Dr. Mark Geier is that his son, David Geier, who has a B.A. in biology, and is not a doctor or any other type of professional qualified to diagnose autism, or indeed, any medical condition, is on the Maryland Commission on Autism as its legally required "diagnostician" member.
According to The Baltimore Sun's article about David Geier's position on the Commission, the statute that created the commission did not definite "diagnostician" and the legal definition is "broad." It's not clear from the article who made the claim that the legal definition is "broad," or how broad "broad" legally is, but one can't help but wonder how useful any definition of "diagnostician" is, if it includes someone who is not licensed, nor otherwise qualified, to diagnose anything or anyone.