Hi Stephanie, I don't know of any (except that I am getting a well trained dog back from GDA, but I want to find him a person who needs a service companion...sorry)...you might want to check with IDOG Rescue. They are really great to work with.
In California, the waiting list is extremely long for Doodle rescues and rehomes, but they do screen the families and try to find the best fit for dogs...they work with all of the rescues and shelters, so they are a really good group to connect with.
www.idog.biz (then look for the rescue link)