dacx, I'm not sure about other programs, since I haven't had any experience with them. I have spoken to people about wraparound services for my son, and the Mental Health/Mental Retardation department about wraparound services, and I would think they might have more info for you. I found this link
Wraparound or BHRS Services (http://www.dpw.state.pa.us/servicesprograms/autism/help/003676342.htm - broken link) that may help, I don't think it's just for autism, but I could be wrong.
You could also check out the Intermediate Units,
PA Department of Education Intermediate Units, my son has his preschool speech therapy there but they had a developmentally disables preschool, and classes with all types of special ed kids, downs syndrome etc.
As for elderly, check out http://www.dpw.state.pa.us/ServicesPrograms/MedicalAssistance/SuppServWaivers/003671635.htm (broken link). It sounds maybe like what you mentioned.
Good luck with it; if I find anything else I'll let you know.