I came in looking for the phone number & thought I'd comment on the one review I see here. We were VERY nervous and upset about the no parents policy when our daughter was tiny-- she's been seeing Dr. Parrish from the very beginning. But the practice came HIGHLY recommended from every single person I talked to, so we toughed it out.
Now my daughter is a teenager and I can't praise this practice and its policies enough. My daughter feels responsible for her own teeth and understands everything she's been taught by Dr. Parrish.
After the first couple of visits she went back alone with barely a whimper-- and she was barely talking at that point. I think it's because they talk to the kids throughout their examination-- rather than over their heads to their parents. They're also extraordinarily patient and let a child acclimate to the examination area before starting the exam. I don't really know how they do it, but I know that my daughter has always had a MUCH better attitude about dental care and dentists than I did as a kid.
An autistic child would be a different matter and I have no idea what sort of challenges that would involve, but in situations like mine, I highly recommend Dr. Parrish and his coworkers.