There is a lovely OB/GYN in HOMS named Marisol Nunez Duran. Top notch woman - she's also the anatomy and physiology professor for med students at PUCMM.
I highly highly recommend Dr. Enrique Herrera in HOMS (fifth floor). He is my OB/GYN and I love him, so do several of my coworkers/friends. He is no nonsense, but very caring and accessible.