Principal Investigators

Jan Sullivan, M.D.Jan Sullivan, M.D.
Dr. Sullivan is a recognized expert in Pediatric Critical Care and Clinical Pharmacology with extensive administrative experience directing a pediatric clinical research unit including the NICHD-supported PPRU at UofL. She also has clinical trial design experience and has worked with the NICHD funded PTN through Duke University, co-authored a clinical trial and was Co-PI as the site lead for that successful study. Currently, she is funded by support from the Department of Pediatrics, grants/subcontracts and industry sponsored trials. She joined the faculty at UofL in 1995 and was instrumental in developing the Kosair Charities Pediatric Clinical Research Unit at UofL/Norton Children's Hospital. She has extensive mentoring experience with residents in training, graduate students and junior faculty members. She previously chaired the Section on Clinical Pharmacology and Therapeutics Executive Committee of the American Academy of Pediatrics (AAP) and currently serves on the AAP Committee on Drugs. She has served as a grant reviewer for EMEA and the NIH.

 Sara Watson, M.D.Sara Watson, M.D.
Dr. Watson is an assistant professor in pediatric endocrinology and serve as a co-PI for the Kentucky-Pediatric IDeA Research Center (K-PIRC). She has research experience and expertise in the areas of diabetes and obesity. She is excited about the opportunities to work on multi-center studies and participate in the professional development and mentorship that is incorporated in this grant.

Julia Mitchell, M.D.Julia Mitchell M.D., FAAP
Dr. Mitchell practiced general pediatrics for 3 years in the MS Delta prior to moving to Louisville. She is currently a general pediatrician at the downtown U of L pediatric clinic where she is the associate medical director.  She is interested in community social determinants of health and particularly adverse childhood experiences and resilience.

Deborah Davis, PhD

Deborah Winders Davis, PhD
Dr. Davis is a Professor in the Department of Pediatrics, Director of the Child and Adolescent Research Design and Support (CAHRDS) unit, and Director of the Louisville Twin Study. Her PhD is in nursing with doctoral and post-doctoral training in developmental psychology. Her current research is focused on reducing the prescribing of psychotropic medications for children, especially antipsychotic medications, and improving the health care of children in foster care with behavioral and mental health problems. Additional interests are early childhood development, promoting positive parenting, and prevention of behavioral and mental health problems.

Paula Radmacher

Paula G. Radmacher, MSPH, PhD
Dr. Radmacher is an Associate Professor and works in the Neonatal Nutrition Research Lab. Her Research interests include Neonatal nutrition in the preterm infant, especially human milk composition and its effects on growth, Human milk fortifiers, Neonatal GI biome, Neonatal abstinence syndrome, and Human subjects research.

Ron Morton, M.D.Ronald L. Morton, M.D.
Dr. Morton is a Professor in the Department of Pediatrics at the University Of Louisville School Of Medicine and is a staff physician at Norton Children’s Hospital. He is the Director of the UofL Cystic Fibrosis Center, and Director of the ventilator unit at the Pediatric Convalescent Center, Home of the Innocents.  In 2005 Dr. Morton received the Northeastern Ohio Universities College of Medicine Excellence in Research Award and the University Of Louisville School Of Medicine Graduating Resident Class of 2005 Child Advocacy Award.  In 2006 he received the University Of Louisville School Of Medicine Leonard Tow Humanism in Medicine Award presented by the Arnold P. Gold Foundation.

Kyle Brothers, M.D.Kyle Brothers, M.D., PhD
Dr. Brothers is an Associate Professor of Pediatrics at the University of Louisville, and an affiliated faculty member with the Institute for Bioethics, Health Policy, and Law. Dr. Brothers’ research focuses on pediatric research ethics, policy and ethics in human genetics, and the translation of health technologies into clinical care. Dr. Brothers is a practicing primary care pediatrician and the chair of the ethics committee at Norton Children's Hospital. Dr. Brothers received his MD from the University Of Louisville School Of Medicine. He completed his residency training and chief residency in Pediatrics at Vanderbilt Children's Hospital, and his PhD in Ethics and Society at Vanderbilt University.

Scott Bickel, M.D.Scott Bickel, M.D., M.S.
Dr. Bickel was the first pediatric pulmonology fellow at the University of Louisville.  During his fellowship, he also completed a Master of Science in Clinical Investigation Sciences through the School of Public Health. Dr. Bickel is an Assistant Professor in the Department of Pediatrics at the University of Louisville.  He has special interests in pulmonary function testing, optimizing asthma care, and resident and student medical education. As such, Dr. Bickel is an active member of the Norton Children's Hospital Asthma Task Force, where he helped implement a new respiratory therapist driven asthma protocol.  He has served on the Medical Student Education Committee since 2009 where he has helped with curriculum development.  He also organizes and facilitates rotations in pediatric pulmonology for medical students and residents.  Dr. Bickel has published in peer-reviewed journals on the clinical applications of impulse oscillometry, pediatric medical education, and barriers to adherence in asthma.

David Lohr, M.D.W. David Lohr, M.D.
Dr. Lohr is an Associate Professor in Child Psychiatry and Psychology in the Department of Pediatrics. Areas of research interest include comorbidities of autism spectrum disorders and understanding the use of psychotropic medications in children. Currently he participates on a team contracted by the State of Kentucky to study and provide oversight on the use of psychotropic medications to children in foster care. In addition, he is interested in researching pharmacotherapy trials to address issues of anxiety and emotional regulation in children with autism.

Claudia Espinosa, M.D.Claudia Espinosa M.D., M.Sc.
Dr. Espinosa is an Assistant Professor of Pediatrics at the University of Louisville School of Medicine in the Division of Pediatric Infectious Diseases and Attending Physician at Norton Children’s Hospital, Norton Women and Children’s St. Matthews Hospital and at the University of Louisville Hospital in Louisville, KY.  She is a member of the Children’s Health Services Research Unit within the Department of Pediatrics and works with the resident Evidence Medicine Curriculum and Global Health Department. Her clinical and research interests are focused on the improvement of prevention and management of perinatal transmitted infections.

Lori Devlin, M.D.

Lori Devlin, D.O., M.H.A., M.Sc.
Dr. Devlin is an Associate Professor of Pediatrics at the University of Louisville. She is a practicing neonatologist and the Director of the Neonatal Fellowship Program. Dr. Devlin’s research focuses on perinatal drug exposure and neonatal abstinence syndrome.  She completed a Masters in Science degree focusing on clinical research at the University of Louisville.


 Greg Barnes, M.D., Ph.D.
Dr. Barnes is the co-director of the Pediatric Epilepsy monitoring unit and Associate Professor in the UofL Departments of Neurology and Pediatrics. After earning a BS in molecular biology from Vanderbilt University, Dr Barnes graduated with his PhD in biochemistry and his medical degree from University of Kentucky. His clinical/post-graduate training includes pediatrics at St. Louis Children’s Hospital, a clinical fellowship in pediatrics, neurology and epilepsy at Boston Children’s Hospital and an epilepsy research fellowship from the Duke University. Dr Barnes has held academic appointments at Washington University School of Medicine in St. Louis, Harvard Medical School, Duke University Medical School, the University of Kentucky College of Medicine and Vanderbilt School of Medicine. His current research interests include 1) new computational models; 2) new state-of-the-art machine learning approaches; 3) basic science models; and 4) clinical trials to analyze and integrate multiple data types to identify neural circuits that 1) aid clinicians in the identification of patients at high risk for ASD, 2) predict clinical manifestations of the disorder, and 3) identify potential personalized treatment options including cannabinoid compounds. He currently serves as the Neurodevelopmental core director on this grant.

Gilber Liu

Gilbert C. Liu, M.D.
Dr. Liu is an Associate Professor in the Department of Pediatrics, and the UofL School of Medicine Endowed Chair for Urban Health Policy Research. He also serves as the Medical Director for the Kentucky Department for Medicaid Services. His research has focused on environmental factors associated with child obesity, with an emphasis on geospatial methodologies for assessing the built environment. Currently, he is studying health policies related to the quality, sustainability, and equity of public health insurance. In addition to his clinical background as a general pediatrician, Dr. Liu completed graduate training in biomedical engineering and a National Library of Medicine fellowship in Medical Informatics.