Heather Garris, a custodian of medical records, organizes patients' files at Colorado Springs Internal Medicine in Colorado Springs, Colo. Barry Gutierrez for NPR hide caption

itoggle caption Barry Gutierrez for NPR

Patient William Wishart, age 4 months, looks on as Dr. Melanie Walker uses a portable computer to enter information from his exam into an electronic medical records system, in North Raleigh, N.C., in November. Chris Seward/MCT /Landov hide caption

itoggle caption Chris Seward/MCT /Landov

Transporting reams of athletes' medical information has become a major burden for the U.S. Olympic Committee, and is one reason it's switching to electronic medical records. Andrew Villegas/KHN/iStockphoto.com hide caption

itoggle caption Andrew Villegas/KHN/iStockphoto.com