As my BB from Claro died on me, I cannot answer you myself. Go to petplaza.com.do, look up their contact info, and give them a call.
The owner is Kay, and you can call her with the compliments of Peter (me). She will provide you with several good English speaking vets.
Another good vet, but once again damn my Claro BB, look up FCI Dominican Republic. This is the pedigree organisation, but the president is a very good vet as well.