There is Delta.org and Paw Partners but they are part of Delta. I know that there is a therapy dog website and organization but I'm not too familiar with that one. We are going through Delta. Good luck in finding a group in Florida.
Stay on this thead - I think we can learn a lot from each other on this. It's a wonderful thing to get involved in this - if you could just see how these dogs work with patients - it's so unbelievable and so rewarding - for both you and your Yorkie.