Hi,
I had my baby at a birthing center in Grand Prairie (I didn't really want to be in a hospital). If you are interested, I will give you the details, but if you want an OB/GYN, I was seeing Dr. Hoffman in Las Colinas, and I concur with the previous poster that he is great. He is very supportive and even supported my decision to birth in a center (although he doesn't attend birthing center births... so, in essence he was losing a "sale" so to speak, but was very supportive anyway). I would highly recommend him and his staff. They are always pleasant, remember you and your specifics and are prompt. Plus, their billing manager helped me sort out all the insurance stuff when I transferred to the birthing center. I would see him again for any of my ob/gyn needs.
Depending on where you are in Grand Prairie, it would not take you that long to get there and I could give you some help with the fastest routes for various times of day (I live in Irving very near his office).
Good Luck in your search and welcome to the area! :-)