Dr. Twombley’s distinguished career in pediatric nephrology and her dedication to advancing care through research and education will be instrumental in shaping the future of pediatric health across the region,” said Andrew Stec, MD, MBA, Vice President and Chief Medical Officer of Nemours Children’s Health, Jacksonville. “Her appointment as Chair of Pediatrics marks a significant step in our commitment to patient-centered care, clinical excellence and innovation.
JACKSONVILLE, Fla. (Nov. 20, 2025) – Nemours Children’s Health, Jacksonville today announced Katherine Twombley, MD, FAAP, FAST, as Chair of the Pediatrics department. A distinguished nephrologist with a strong background in research and education, Dr. Twombley brings an exemplary standard of clinical excellence and academic rigor to Nemours Children’s.
“Dr. Twombley’s distinguished career in pediatric nephrology and her dedication to advancing care through research and education will be instrumental in shaping the future of pediatric health across the region,” said Andrew Stec, MD, MBA, Vice President and Chief Medical Officer of Nemours Children’s Health, Jacksonville. “Her appointment as Chair of Pediatrics marks a significant step in our commitment to patient-centered care, clinical excellence and innovation.”
In this role, Dr. Twombley will collaborate across departments to focus on clinical outcomes and facilitate continuous improvement in quality and safety. She will also help set the strategic direction to promote clinical growth and partnerships throughout the area.
Dr. Twombley earned her medical degree from the Medical University of South Carolina (MUSC). She completed her internship at Miami Children’s Hospital, now known as Nicklaus Children’s Hospital, and a fellowship in pediatric nephrology at the UT Southwestern Medical Center. At MUSC, she served as professor with tenure and Chief of Nephrology in the College of Medicine’s Department of Pediatrics. She has held leadership roles that have fostered innovation in pediatric care delivery and enhanced access to care for patient families.
Her commitment to children’s health is evident in her nationally recognized expertise and numerous achievements, including establishing the first and only pediatric nephrology fellowship in South Carolina. She is board-certified by the American Board of Pediatrics in both general pediatrics and pediatric nephrology.
About Nemours Children's Health
Nemours Children’s Health is one of the nation’s largest multistate pediatric health systems, which includes two freestanding children's hospitals and a network of more than 70 primary and specialty care practices. Nemours Children's seeks to transform the health of children by adopting a holistic health model that utilizes innovative, safe, and high-quality care, while also addressing children’s needs well beyond medicine. In producing the highly acclaimed, award-winning pediatric medicine podcast Well Beyond Medicine, Nemours underscores that commitment by featuring the people, programs and partnerships addressing whole child health. Nemours Children's also powers the world’s most-visited website with health information written for parents, kids and teens, Nemours KidsHealth.org.
The Nemours Foundation, established through the legacy and philanthropy of Alfred I. duPont, provides pediatric clinical care, research, education, advocacy, and prevention programs to the children, families and communities it serves. For more information, visit Nemours.org.
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