I just added a link to State by State Resources from Autism Speaks. I can't personally vouch for any of the service providers, and it is not a comprehensive list. V uses dentists, doctors and specialists that are not on the list. My friend uses a music therapist that is not on the list.
There was already a link to a list of resources provided by Autism Pathfinders, but each link offers different resources. If you don't find what you need in one list, check the other. I wish there was one comprehensive list, but I have not found that yet. An individual does not have to be autistic to benefit from these community resources, so whatever the disability, if you need support services, a doctor, or a specialist, check the lists.
If anyone has found a resource in the community that they would like to make others aware of, please post the information in a comment, and I will add a post to make others aware.