America’s Leading Doctors

From treating heart disease to fighting cancer, these physicians are changing the world of medicine

University of Pennsylvania Health System
Specialty: Neonatal/Perinatal Medicine
An attending physician in the Newborn/Infant Center, Dennery also trains and supervises medical students and neonatal post-doctoral fellows. Her clinical interest is neonatal jaundice, and her research probes the regulation of lung gene expression in oxidative stress.

Timothy M. George, M.D.
Title: Chief of Pediatric Neurosurgery and Neurosciences, Dell Children’s Medical Center; Professor of Cell and Molecular Biology, University of Texas, Austin
Specialty: Pediatric Neurosurgery
George oversees the pediatric neurosurgery center at Dell Children’s Medical Center of Central Texas. Among his research interests are cranial nerve stimulation for pediatric epilepsy and abnormal development of the spinal cord. Before this appointment, George was associate professor of neurosurgery, pediatrics, and neurobiology at Duke University.

Kelvin J. Holloway, M.D., M.B.A.
Title: Healthcare Administrator, Asthma & Allergy Specialist; Pediatrician,
Morehouse Medical Associates
Specialty: Pediatrics
Holloway is best known as an asthma/allergy specialist and pediatrician, serving at Children’s Healthcare of Atlanta, Hughes Spalding, and downtown Atlanta’s Morehouse Medical Associates, the clinical service arm of Morehouse School of Medicine.

Yolanda Wimberly, M.D., M.Sc.
Title: Assistant Professor of Clinical Pediatrics; Program Director, Pediatric
Residency Program, Morehouse School of Medicine
Specialty: Pediatrics and Adolescent Medicine
Wimberly is a recognized expert in adolescent health and focuses on sexually transmitted diseases, reproductive health, and human sexuality. An emerging leader in pediatrics, she won the Georgia Chapter’s American Academy of Pediatrics’ 2007 Young Physician Award.

Kevin Johnson, M.D., M.S.
Associate Professor and Vice Chair of Biomedical Informatics and Associate Professor of Pediatrics, Vanderbilt University Medical Center
Specialty: General Pediatrics, Biomedical Informatics
To make healthcare better, johnson puts information technology to work. This developer of clinical information systems works with a Vanderbilt team that’s a global leader in its field. Used for more than 60,000 prescriptions each month, their software automatically checks for medical mistakes and drug contraindications .

In Memphis, Tennessee, his team’s “health information exchange” work connects many of the area’s emergency departments and clinics. “Imagine that a patient seen in one part of town just hours before for chest pain can have previous radiology and procedure reports available to an emergency department
in another part of town virtually instantaneously,” Johnson says. “Our research has already impacted the healthcare delivered to patients in emergency departments in Memphis. It is a nationally exciting project, and one that we get to use to show the amazing potential of electronic health records.”

Johnson’s interest in healthcare was kindled during his childhood in Baltimore, when Johns Hopkins doctors and nurses took care of him during asthma attacks. By the time he entered college, he upgraded his ambitions to pediatrics upon realizing he was a “people person” who enjoyed interacting with families. As a student at Johns Hopkins University School of Medicine, Johnson’s passion for computer science led him to conduct research in biomedical informatics, and he received a master’s degree from Stanford in the discipline once he completed his residency in pediatrics.

The Robert Wood Johnson Foundation’s Project HealthDesign funds Johnson’s initiative to work with children to help them take their medication on time. -Cliff Hocker

Emily Pollard, M.D., F.A.C.S.
Title: Chief of Plastic Surgery, Lankenau Hospital; Assistant Professor of

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