Dr. Cheah earned his medical degree from the University of Malaya Medical Faculty in Kuala Lumpur, Malaysia. He completed residencies in Pediatrics at both the University Hospital in Kuala Lumpur and at the Children’s Hospital of Wisconsin in Milwaukee. He completed his fellowship in Pediatric Critical Care Medicine at the Children’s Hospital of Los Angeles in Los Angeles, California. He is leading the effort to bring ultrasound to the bedside in the PICU.
Dr. Graham earned a master’s degree in Physiology as well as his medical degree from Georgetown University. He completed his Pediatric residency at Georgetown and his Pediatric Critical Care Medicine fellowship at St. Joseph’s Hospital and Medical Center in Phoenix, Arizona. He serves as the medical director for Respiratory Therapy, assisting with hospital practices, purchasing respiratory equipment, developing clinical pathways, and setting goals for the therapists.
Dr. Liu received his medical degree from the Ohio State University College of Medicine in Columbus, Ohio. He completed a residency in Pediatrics at the Columbus Children’s Hospital and then completed a fellowship in Pediatric Critical Care Medicine at Children’s Hospital of Pittsburgh of UMPC. He also completed an anesthesiology residency at the Mayo Clinic in Rochester, Minnesota before joining the staff at Phoenix Children’s Hospital. He is quadruple board certified in Pediatrics, Anesthesiology, Pediatric Critical Care, and Neurocritical Care.
Dr. Liu has been instrumental in moving ECLS patients and others into an "awake" and interactive care model. His current investigative area is examining the role of dexmetomodine in the ICU, as Phoenix Children's uses his medication as a primary agent in children from infants to adults. He also serves on the ECMO support team for Phoenix Children's, providing additional expertise in care and management of these children.
Robert B. Rosenberg, MD
Dr. Rosenberg earned his medical degree and doctor of philosophy from the University of Louisville in Louisville, Kentucky. He completed his Pediatrics residency and fellowship in Pediatric Critical Care medicine at Children’s Hospital in Columbus, Ohio. Until 2001, when he came to Phoenix, he was the medical director of the PICU at University Medical Center, Texas Tech University Health Sciences Center in Lubbock, Texas. He is a member of the Institutional Review Board at Phoenix Children's.
Paul P. Tafoya, MD
Dr. Tafoya earned a Bachelor of Science Degree in Sociology and Anthropology at Lewis and Clark College in Portland, Oregon. After a year-long study abroad program in South America, he attended the Ohio State University College of Medicine in Columbus, Ohio, where he received his medical degree. He graduated from the Phoenix Children’s Hospital combined Internal Medicine/Pediatrics residency program with Good Samaritan Regional Medical Center in Phoenix, Arizona. He completed a fellowship in Pediatric Critical Care Medicine at the Children’s Hospital Los Angeles. While in Los Angeles, he also participated in the first fellowship program involving a Leadership and Professionalism curriculum. He is currently leading the effort to develop a telemedicine program at Phoenix Children's.
Dr. Tellez received his medical degree from the University of California, San Diego. He completed his residency in Pediatrics at Phoenix Children’s Hospital and his fellowship in Pediatric Critical Care Medicine at Children’s Hospital of Los Angeles.
Dr. Tellez serves as the major liaison to the Pediatric Acute Lung Injury and Sepsis Network. He functions as the hospital's primary investigator for the Calfactant Study in Bone Marrow Transplant patients and the Influenza epidemiologic and genomics study. He is the Principal Investigator for the Phoenix Children's site for the National Emergency Airway Registry for Children (NEAR4KIDS), a multi-center, prospective registry for advanced airway management in pediatric intensive care units.
Dr. Tellez recently was awarded a Leadership Circle grant for the purchase of advanced respiratory monitoring in the PICU. He serves as the Critical Care liaison to the Trauma Service and lectures frequently on Critical Care and Emergency Medicine topics such as drowning, airway management, emergency stabilization, and transport. He serves as the pediatric transport medical director, providing consultation and evaluation for Air Evac, a medical evacuation operator serving Arizona.
Vinay Vaidya, MD
Dr. Vaidya is the Chief Medical Information Officer at Phoenix Children’s Hospital. He earned his medical degree at the GS Medical College in Bombay, India and completed a fellowship in Pediatric Critical Care Medicine and Extracorporeal Membrane Oxygenation at the Children's National Medical Center at George Washington University in Washington, D.C.
As the Chief Medical Information Officer at Phoenix Children's, Dr. Vaidya serves as a liaison between the Information Technology Department and the clinical staff, providing reviews of medical informatics experiences and approaches, while also developing technical and application implementation strategies. Additionally, he manages the implementation of advanced clinical information systems and works closely with the CIO to develop strategic plans for clinical information systems.
Dr. Willyerd received his medical degree from the Creighton University School of Medicine. He completed his residency at Phoenix Children's Hospital and his fellowship in Pediatric Critical Care Medicine at Children’s Hospital of Pittsburgh of UMPC. In addition to his clinical duties, he conducts research into the transport of medications across the blood brain barrier of the injured brain.
Dr. Willyerd is interested in the transport of medication across the blood brain barrier of the injured brain, an area of vital interest for pediatric critical care clinicians. His work on ATP binding cassettes as transporters of medications is opening new avenues of understanding of this complex process. He also serves as the point-of-contact for resident education in the PICU, which includes overseeing the PICU Resident Conference and providing resident feedback to the Medical Education department.
Elizabeth A. Zorn, MD
Dr. Zorn received her medical degree from the University of South Dakota School of Medicine in Vermilion, South Dakota. She completed a combined Internal Medicine/Pediatrics residency program at Good Samaritan Regional Medical Center in Phoenix, Arizona and completed her fellowship in Pediatric Critical Care Medicine at LeBonheur Children’s Medical Center in Memphis, Tennessee.
Dr. Zorn is currently the Associate Division Chief and Medical Director of the PICU. She is a past president of the Phoenix Children's medical staff, current Peer Review lead, and chair of the Clinical Effectiveness Committee. She is heavily involved in new safety initiatives related to early identification and treatment of sepsis and shock through Phoenix Children's. She is the Surviving Sepsis lead at Phoenix Children's and is also the hospital representative to the Donor Network of Arizona. She oversees all fellow Quality Improvement project and works with the Scholarly Activity Forum and Exchange to ensure that all fellows complete a Quality Improvement project.