A few years ago Atrius Health, a major independent physicians group, tried giving elderly, chronically ill patients devices that they could use in their homes to do things such as provide a verbal reminder to take their medications. "It absolutely made sense," says Dr. Michael Lee, Atrius's director of informatics. Lee, who's also a pediatrician, is among the health IT leaders we recognize in this year's InformationWeek Healthcare CIO 20. We call it the "CIO" 20, but as Lee's presence shows, we include people holding many titles who are driving change in their organizations and the industry.