Rhiannon Lynae Hickok, MD

Dr. Hickok specializes in pediatric cardiac critical care medicine at Johns Hopkins All Children’s Hospital in St. Petersburg, Florida. She re-joined the hospital staff in 2025. Having previously served in a similar role from 2016-2019. In the interim, she was an attending physician in the pediatric cardiac intensive care unit at St. Joseph’s Children’s Hospital in Tampa. She earned her medical degree from the University of Florida College of Medicine in Gainesville. She completed an internship and residency in pediatrics at University of North Carolina Hospitals in Chapel Hill. She then completed a fellowship in pediatric critical care at Children’s National Medical Center in Washington, D.C., followed by a cardiovascular intensive care unit fellowship at Texas Children’s Hospital in Houston.