J.D. Hammond is a board-certified pediatrician and neonatologist/hemodynamic specialist at Rady Children's Health, and an Assistant Professor of Pediatrics and the current program director for the Neonatal Cardiac Intensive Care and Hemodynamics Fellowship Training Program at The University of California, Irvine. He completed his categorical pediatrics training at Ann and Robert H. Lurie Children's Hospital of Chicago at the Feinberg School of Medicine at Northwestern University and received his fellowship training in Neonatal and Perinatal Medicine at Texas Children's Hospital and Baylor College of Medicine in Houston, Texas. After his categorical fellowship training, Dr. Hammond completed 12 months of additional training in Neonatal CVICU and Hemodynamics at the University of California, Irvine where he now currently practices. Dr. Hammond possesses strong clinical and translational research interests in targeted neonatal echocardiography in acute and chronic pulmonary hypertension as well as alterations in hemodynamics/ECMO utilization in neonates with acute/chronic lung diseases. He serves as a part of the Neonatal Hemodynamics Research Center's Educational Planning Committee and is an active member of the Children's Hospital Neonatal Consortium Congenital Diaphragmatic Hernia and ECMO Focus Groups. He has given lectures, presented research, and moderated sessions in hemodynamics at multiple national and international meetings including PAS, AAP and NeoHeart.