ABOUT ABC PEDIATRICS--ABC Pediatrics is a state-of-the-art pediatric healthcare facility. ABC Pediatrics is THE pediatric office to be seen at in McKinney. ... If you are a patient and would like to access your portal, do so here. ... ABC Pediatrics 5333 University Drive McKinney, TX 75071 (972) 569-9904. Office Hours; Monday: 08:30 AM - 05:00 PM:.