We really like the Shawnee Mission Pediatrics Group, Overland Park Pediatrics are also excellent. They both have a variety of personalities and surely you'll like one of their physicians.
Being an OB/GYN in the area, I have a LOT of experience with the peds groups in the area. My absolute favorite (and who I take my own children to) is Leawood Pediatrics. 4 female docs that recently broke away from a much bigger group. They are the only group I've come in contact with that I I can honestly say I would let any of the docs see my kids. I went to medical school with one of the docs and she is super smart and very personable--has 4 kids of her own. They are ALL great. They have a facebook page that you can check out. I also have a ton of patients that use them and I've never had any complaints.
Re: Pediatricians in OP/south JOCO