Our Leaders


Meaningful research at multiple major pediatric trauma centers takes skilled leadership. Meet the physician leadership team of the ATOMAC+ Pediatric Trauma Research Network.

David Notrica, MD

David Notrica, MD

Phoenix Children's Hospital

Dr. David Notrica is a native of Atlanta, Georgia. He graduated Cum Laude from Duke University in 1988 and Emory University School of Medicine in 1992 where he was class president and a member of the Alpha Omega Alpha National Medical Honor Society. He completed his General Surgery residency training at Emory University in 1997 and his Pediatric Surgery Fellowship training at Texas Children’s Hospital in Houston in 1999.

He is an Associate Professor of Surgery at Mayo Clinic Medical School, Associate Professor at the University of Arizona College of Medicine Phoenix, and Associate Program Director for the Pediatric Surgery Fellowship at Phoenix Children’s Hospital. He was one of the founding members of the ATOMAC pediatric research network.

Dr. Notrica was Chairman of Surgery at Phoenix Children’s Hospital before becoming Chief of Staff in 2006. He has been identified multiple times as a Top Doc by Phoenix Magazine, Best Doctors, and was named a Healthcare Hero by the Phoenix Business Journal in 2014. He Cofounded and co-chairs the Western Pediatric Trauma Conference, the Southwest Trauma and Acute Care Symposium, and Trauma Conference International.

Dr. Notrica developed and continues to direct the Level 1 Trauma Center for Phoenix Children’s Hospital. This program is the only ACS-Verified Level 1 Pediatric Trauma Center in the state of Arizona. He is currently working with UT-Houston on a NIH-funded trauma study using bone marrow stem cells to mitigate traumatic brain injury.

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Dr. Notrica's Bio
James W. “Trey” Eubanks, III, MD, FACS

James W. “Trey” Eubanks, III, MD, FACS

Le Bonheur Children’s Hospital

Dr. James “Trey” Eubanks, III serves as the Surgeon-in-Chief at Le Bonheur Children’s Hospital and Chief of the Division of Pediatric Surgery. He’s a professor of surgery and pediatrics at the University of Tennessee Health Science Center. Dr. Eubanks is board certified in general and pediatric surgery by the American Board of Certification. His clinical interests include pediatric trauma, chest wall abnormalities, foregut anomalies, minimally invasive surgery, and surgical quality. In addition, he is a member of several committees and organizations locally, regionally, and nationally including the Board of Directors of the Trauma Center Association of America and the Tennessee Trauma Care Advisory Council.

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Robert Maxson, M.D.

Robert Maxson, M.D.

Arkansas Children's Hospital

Dr. Maxson received his undergraduate degree from Texas A&M University, his M.D. from the University of Texas Medical Branch at Galveston, and completed a surgical residency at UAMS in 1996. He went on to complete fellowships in Pediatric Surgery from Baylor College of Medicine and Texas Children’s Hospital. Dr. Maxson was instrumental in building the Level I pediatric trauma centers at Children’s Medical Center of Dallas, Dell Children’s Hospital in Austin and then Arkansas Children’s Hospital, working as a consultant in the development of the Arkansas Trauma System from 2009 to 2016.

Dr. Maxson has co-authored over 70 articles and four book chapters and has received multiple awards for research and teaching. He is a member of the American College of Surgeons (ACS), the American Pediatric Surgical Association, the American Association for the Surgery of Trauma, the American Academy of Pediatrics, the American Trauma Society, the Eastern Association for the Surgery of Trauma, and the Society of Critical Care Medicine. He has served as the Chair of the Verification Review Committee for the ACS Committee on Trauma. He is Board certified in General Surgery and Pediatric Surgery.

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Jeremy Johnson, MD, FACS, FAAP

Jeremy Johnson, MD, FACS, FAAP

Oklahoma Children’s Hospital at OU Health

Jeremy Johnson, MD, FACS, FAAP, is an Associate Professor in the Pediatric Surgery section of the Department of Surgery at the University of Oklahoma. He is the Pediatric Trauma Medical Director of the ACS-verified Level 1 pediatric trauma program at Oklahoma Children’s Hospital at OU Health.

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Jessica Ann Naiditch, MD

Jessica Ann Naiditch, MD

Dell Children’s Medical Center

Dr. Naiditch is a board certified pediatric surgeon and a Fellow of the American College of Surgeons. She has a focus on pediatric trauma care and is the Trauma Medical Director at Dell Children’s Medical Center in Austin, TX. She is also an Assistant Professor of Surgery & Perioperative Care at the University of Texas – Austin Dell Medical School.

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Mark Ryan, MD, MSPH, FACS

Mark Ryan, MD, MSPH, FACS

Children's Medical Center Dallas / University of Texas Southwestern

Mark L. Ryan, M.D., M.S.P.H., FACS, is an Assistant Professor in the Department of Surgery and the Assistant Director of Pediatric Trauma at UT Southwestern Medical Center. He specializes in pediatric trauma and surgical critical care.

Dr. Ryan earned his medical degree at Yeshiva University’s Albert Einstein College of Medicine. He completed a residency in general surgery at the University of Miami Miller School of Medicine, where he also earned a Master of Science in Public Health. He then received advanced training in pediatric surgical critical care and pediatric surgery through separate fellowships at Le Bonheur Children’s Hospital/The University of Tennessee Health Science Center and Arkansas Children’s Hospital/University of Arkansas for Medical Science, respectively.

Board certified in surgery, pediatric surgery, and surgical critical care, he joined the UT Southwestern faculty in 2018. He is the Associate Medical Director of Trauma Services and the Surgical Medical Director for ECMO and Trauma Critical Care.

Dr. Ryan is a member of multiple medical societies relating to trauma and pediatric surgery. He serves on local and national committees on surgical critical care, trauma, and disaster management. He has contributed to two books and written dozens of articles.

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Dr. Ryan's CV
Dr. Karla A. Lawson, PhD, MPH, RD

Dr. Karla A. Lawson, PhD, MPH, RD

Dell Children’s Medical Center

Dr. Karla A. Lawson, PhD, MPH, RD is the Research Scientist and Director of the Trauma and Injury Research Center at Dell Children’s Medical Center and a Clinical Assistant Professor at the University of Texas-Austin Dell Medical School. She received her doctoral degree from the University of Texas in 2003 and was awarded the Cancer Prevention Fellowship at the National Institutes of Health for 2003-2006. She received a Master in Public Health degree from Johns Hopkins University Bloomberg School of Public Health in 2004, where she concentrated in epidemiology and biostatistics. She is an Assistant Professor of Public Health at the University Of Texas School Of Public Health Austin Regional Campus, Assistant Professor of Surgery at The University of Texas Dell Medical School, Assistant Professor of Pediatrics at the University of Texas Medical Branch, and a visiting Professor of Nutrition at the University of Texas at Austin Department of Nutrition. She currently is the instructor for two trauma-related research classes for the University of Texas Medical Branch and both practicum and culminating experience electives for the University of Texas School of Public Health. Her current research interests include the prevention and clinical decision making of non-accidental trauma injury, injury surveillance, and best clinical practice.

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