Do you know where "Materno Infantil" is, off of the Ave. Juan Pablo Duarte? Take a right up that street, you'll be going the wrong way up a one way street but it seems alot of people do this, either that or take a right next to the Plaza Internacional on the side with the Movie rental place, then take another right at the next corner and another right so you circle around the block and you can get to it that way without driving against traffic.
It's a single story house with a banner that says "DRUMS" outside.
The number I have is 809-581-3741 I just can't remember if that's Pablo's personal number or the business phone #. It's been a while since I've called them. (maybe over a year)