Meet Our Physicians

Rachael Johnston, MD is a board-certified pediatrician. She grew up in Kansas and Oklahoma and earned a bachelor of science degree at the University of Tulsa before completing her medical school training at Washington University in St. Louis. She then completed a pediatric residency program at Children’s Medical Center in Dallas before moving to McKinney where she now calls home. Dr. Johnston loves caring for children and seeing them happy when they are healthy. Outside of work, she enjoys hiking and traveling as well as serving and volunteering with her church.