Vetex has 2 offices in the area. One at the Punta Cana Village, Galerias de Punta Cana, 3rd section, 2nd floor. The other in Bavaro on the stretch between FRIUSA and RIU, it will be on your right hand side, you can't miss the sign. The owner/vet is Vicente de Sanctis. Prices are higher than in Santo Domingo but to date I've been well satisfied with his services and there are only a few other options in the area.