I keep getting people visiting my weblog because they are performing a search for a list of RHIOs. So, I thought I would try to at least point them in the right direction. First, the HIT Dashboard recently released by the HIMSS RHIO Federation seems to have the most comprehensive list of regional health information networks and other RHIO-like efforts. Second, the eHealth Initiative Connecting Communities website also has a list with a description of the project, but there isn't always much contact information.
Now, I've been at this long enough that I too have a couple of lists. The first is of all the California regional health information network projects or organizations. This list includes a description of the project and contact information, but I'll only release it if those on the list give me their permission.
I've also amassed quite a significant list of RHIO emails, but I don't have any plans at the moment to release this list unless it is for a really good reason. Again, I would try to have those on the list participate in the decision to release the list, or not.
My advice is to try the two links above and contact me about my lists only if you think you have a mighty fine argument! (We'll talk!)