Todd Park

President Barack Obama appointed Todd Park in March as U.S. chief technology officer. Before that, the 39-year-old Park worked with HHS, starting in 2009, as chief technology officer. While there, his accomplishments included the unveiling of Health Care.gov, which allows users to search the availability of health insurance plans using a ZIP code. Park in 1997 co-founded Athenahealth, a Watertown, Mass.based developer of Web-based portals for providers.