Meet Our Team

Jennifer Arnold, M.D., M.Sc., FAAP

Dr. Arnold, a neonatologist, serves as medical director for the Simulation Center at Johns Hopkins All Children’s Hospital. The center enables training in a realistic clinical environment on high-risk or emergency situations in such configurations as a trauma center, critical care unit, patient rooms and neonatal intensive care unit. Under Dr. Arnold’s leadership, Johns Hopkins All Children’s training is expanding beyond the clinical staff and graduate medical students to include instruction for parents on how they should care for premature babies when they take them home. Previously, Dr. Arnold led the Simulation Center at Texas Children’s Hospital in Houston.

Dr. Arnold received her medical degree from the Johns Hopkins University School of Medicine in Baltimore, Maryland, and completed a residency, master of science in medical education, and neonatal-perinatal fellowship training at the Children’s Hospital of Pittsburgh and University of Pittsburgh Medical School.

Dr. Arnold routinely speaks, does presentations and contributes to books and journals on simulation techniques and their benefits toward medical education.

Melissa Powell, B.S.N., M.S., M.H.P.E.

Melissa Powell is an RN advanced nursing education specialist at Johns Hopkins All Children’s Simulation Center. She graduated from Vanderbilt University, where she completed her master’s degree in Health Professional Education. As a certified health care simulation educator, Melissa designs, manages and evaluates standardized patient and mannequin-based simulation in pediatric care. Her professional focus is on improving performance and patient safety and quality through simulation. Melissa has presented nationally and internationally at simulation conferences. 

William (Bill) Cullis, Simulation Technologist

Bill Cullis is a simulation technician at Johns Hopkins All Children’s Simulation Center. He operates and manages the technology, equipment and supplies for mannequin-based simulation in pediatric care, and also manages the audio-visual and IT operations for the center. Bill holds a degree in Computer Engineering Technology.