Jean - many of us have been talking informally about this kind of thing for years now; there seems to be a real desire/need, but it's hard to know where to start. If you or anyone has ideas, please share!
There is a group in Seattle who are trying to build a nursing home specifically for PD; it is a formal 501 C3, but has struggled for years to develop the right concept. They are still trying.
“Cautious, careful people, always casting about to preserve their reputation and social standing, never can bring about a reform. Those who are really in earnest must be willing to be anything or nothing in the world’s estimation, and publicly and privately, in season and out, avow their sympathy with despised and persecuted ideas and their advocates, and bear the consequences.” — Susan B. Anthony