Former healthcare CEO argues America's medical system rewards bad outcomes

HARI SREENIVASAN: The Obama administration announced earlier this week that enrollment in the insurance exchanges picked up last month after a troubled rollout. More than 2.2 million Americans picked an insurance plan by the end of December. But, even as many are watching how that effort is faring, the American health system is just starting to grapple with the difficult questions of costs and quality. JUDY WOODRUFF: No matter how you feel about the health care law known as the Affordable Care Act, many experts agree we are entering a critical time that will test ideas about what may or may not work when it comes to changing the health care system.