Gynecologists & OB/GYN’s in Houston, TX Meet Our Team Marlon D. White MD, FACOG Christopher M. Mcguirk MD, FACOG Dudley D. Baker IV, MD, FACOG Chantel L. Ashley CNM Iris Tróchez Valladares, MD Chizaram A. Nwogwugwu, MD Judye Greer, NP