We got our girls from Marie at Celtic Irish Puppies. She gets her yorkies from her sister who breeds them in Ireland. It means no AKC registration but they can be registered in Ireland. Our girls have been super healthy except for a bout of kennel cough. The vet that certifies them has been great (Howard Beach Vet Clinic). The website is
http://celticirishpuppies.com/. Just a note though - she's not a breeder - but she did seem very reputable to us.