In this video, health-care analyst David Williamson discusses a recent court ruling that went against UnitedHealth Group (UNH -1.67%) to the tune of $500 million in punitive damages. Watch and find out how the nation's largest publicly traded health insurer paid the price for a Nevada doctor blamed for putting upwards of 50,000 patients at risk for blood-borne diseases, and what it means for investors of UnitedHealth.