Dr. Grant H. Geissler

Dr. Danielson is associate dean of clinical affairs at Johns Hopkins All Children’s Hospital. Dr. Danielson also began serving as president of All Children’s Specialty Physicians (ACSP) in 2023, first on an interim basis and then permanently. A clinical professor of surgery, he has chaired the Johns Hopkins All Children's Department of Surgery since 2020 and was interim chair from 2018 to 2020. He specializes in general surgery and was an early adopter of minimally invasive surgical techniques, developing expertise in treating chest wall deformities. Dr. Danielson founded the first fellowship sponsored by Johns Hopkins All Children’s Hospital in pediatric surgery and was also instrumental in bringing the National Quality Improvement in Surgery Program to the institution. He was named Johns Hopkins All Children’s Hospital physician of the year in the 2015 Johns Hopkins Medicine Clinical Awards. He joined the hospital staff in 2008. He retired as a colonel from the U.S. Army Reserve in 2017 after serving in both Iraq and Afghanistan. Dr. Danielson earned his medical degree from the University of Rochester where he also completed the residency program in general surgery through Strong Memorial Hospital. He completed a research fellowship in pediatric surgery at Massachusetts General Hospital/Harvard University and a clinical fellowship in pediatric surgery at Children’s Hospital Los Angeles. Before joining Johns Hopkins All Children’s, he served as director of pediatric surgical oncology at the University of Massachusetts. Dr. Danielson is highly rated in 4 conditions, according to our data. His clinical expertise encompasses Appendicitis, Pectus Excavatum, Gastroschisis, Appendectomy, and Endoscopy. Dr. Danielson is board certified in American Board Of Surgery. Dr. Danielson is currently accepting new patients.

Dr. Kays is the medical director of the Center for Congenital Diaphragmatic Hernia (CDH) at Johns Hopkins All Children’s and leads the first unit in the country exclusively dedicated to these patients. He also serves as director of the extracorporeal membrane oxygenation (ECMO) program and co-director of the Fetal Diagnosis/Treatment program. He joined the medical staff in 2016. Dr. Kays has more than two decades of clinical and research leadership in the treatment of CDH, a life-threatening birth defect that affects about one in every 3,000 pregnancies. His research has focused on defining the best treatment strategies for this challenging neonatal diagnosis and contributed to significant advances in care and outcomes. Dr. Kays was previously with UF Health and Shands Children’s Hospital for more than 20 years. He was also surgeon in chief, professor of surgery and chief of the division of pediatric surgery in the University of Florida College of Medicine, Department of Surgery, where he led the ECMO and congenital diaphragmatic hernia program for over 20 years. He is the author or coauthor of more than 60 peer-reviewed original science publications and speaks nationally and internationally on CDH care and outcomes. Dr. Kays earned his medical degree from the Feinberg School of Medicine at Northwestern University. He completed a surgical residency at Strong Memorial Hospital, University of Rochester Medical Center, and then completed a pediatric surgery fellowship at Morgan-Stanley Children’s Hospital of Columbia University, New York. Dr. Kays is a fellow of the American College of Surgeons and the American Academy of Pediatrics and a member of the Children’s Oncology Group. Videos Meet David Kays, M.D. Dr. Kays is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Diaphragmatic Hernia, Congenital Diaphragmatic Hernia, Hernia, Donnai-Barrow Syndrome, and Appendectomy. Dr. Kays is board certified in American Board Of Surgery and General Surgery. Dr. Kays is currently accepting new patients.

Nebbie Walford is a Pediatric Surgeon and a General Surgeon practicing medicine in St Petersburg, Florida. Dr. Walford is highly rated in 2 conditions, according to our data. Her clinical expertise encompasses Van Der Woude Syndrome, Infantile Pyloric Stenosis, Umbilical Hernia, Retroperitoneal Inflammation, and Appendectomy. Dr. Walford is currently accepting new patients.