I've done lots of research into this one (I'll spare the long story), but we have gone with Jollyville Pediatrics. We LOVE Dr. Cepeda, but Dr. Spencer is also good. It is not in Cedar Park, but we think it is worth the 20 minute drive down 183 (just past Academy). We do like Cedar Park Pediatrics & Family Medicine, and have heard really great things about Dr. McConnell, although I have not met her. I was not impressed with Dr. Mathew in that office and stopped going there because of her. I also did like the extra services available through ARC but did not like their factory feel. We did not look at the one on Discovery Blvd. because they wouldn't do an interview, and we eliminated anyone who was not willing to take the time to let us get to know them. I was not impressed with Dr. Cohen and I have heard stories from other moms who were not impressed. Of course picking your doctor is a personal decision, but that has been my experience. Good luck in your search!