Following a self-disclosure to the U.S. Department of Health and Human Services, Centers for Medicare and Medicaid Services, AdminaStar Federal, Inc., a subsidiary of Anthem Insurance Companies, paid the United States $6 million to resolve False Claims Act allegations that the company interfered with Medicare evaluations and overcharged the federal healthcare program. The government alleged that company employees, during the period from 1991 through 1998, tampered with and altered Medicare files and claims information, and hung up on customer service phone calls, in an effort to improve scores on Medicare evaluations of Medicare operations in Kentucky administered by AdminaStar Federal.