Another vote for Dr. Schlegel and Dr. Lasics at Houston Pediatric Associates off of Bellaire. They are both amazing... they listen, they take their time with you on each visit and the nurse (Jessica) is awesome.
We've used Texas Children's Pediatrics (now at Kirby and West Alabama) for over 21 years. My daughter used Dr. Rhonda Smith and my son now uses Dr. Chapman.
Both are great. If you have a son and he is ever going to play sports I cannot recommend Dr. Chapman enough. He did a fellowship in pediatric sports medicine and was great with my son who is a pitcher.