They don't do the therapy certification. You still need to go thru an organization like Delta or get your own insurance. But they do "sell" a title after so many visits.
AKC's Canine Good Citizen® (CGC) Program
CGC title...right?! I just shake my head at some people touting their titled dogs. What title? CGC. Good JOB! lol
However, I do feel the therapy dog is an accomplishment worthy of recognition. But I think it should be awarded freely. How much could a piece of paper cost to recognize a public service?