We work with Early Intervention Associates in Rockville, MD, and I am SO grateful for them! We dropped county services shortly after starting with them because it was just night and day in terms of the progress our son made. We have worked with a few of the PTs there and have always been so impressed. They know how to really focus on what to work on to get kids moving.

I see a PT through Infant & Toddlers whom I really like. I don't know if she does home visits when not through the program, but the office is in Wheaton:
http://pediatric-therapy-associates.net/

Also, there is a PEP preschool program for vision. I know someone whose child attends and he also has sensory issues.