Aetna's five-year settlement with medical societies and physicians--charging it of developing schemes to underpay doctors--has expired as of this month. However, the plan has vowed to keep up with some key doctor-friendly promises, including allowing physicians to leave its network 90 days after giving notice and to file claims up to 120 days after the date of care. Now, the AMA and other watchdog groups say they're going to try to make sure it keeps those promises. Article