Since the Affordable Care Act was signed into law in March '10 United Healthcare (UNH): +478%

@charliebilello United Health: +478%
 

United Healthcare in the Whistleblower Hot Seat

The biggest provider of Medicare Advantage plans in the U.S., United Healthcare (UNH), is being sued in a qui tam whistleblower suit that has been joined by the Department of Justice (DOJ). The suit is so big that the share price of United Healthcare, a member of the Dow Jones Industrial Average, actually dropped enough to drag the DJIA down after the lawsuit was announced. The case was made public in mid-February, 2017.
UnitedHealth Care Reimbursement Fraud Victims Lawsuits http://ht.ly/Zh5g30bTvZt
 
How did UnitedHealth let so many questionable claims slip past?

18 U.S. Code § 1347 – Health care fraud