Medicare: Improprieties by Contractors Compromised Medicare Program Integrity

Pursuant to a congressional request, GAO determined whether Medicare contractors participated in any improper or questionable practices that contributed to fraud, waste, or abuse in the Medicare federal health insurance program, focusing on: (1) recently completed cases of criminal conduct or False Claims Act violations committed by Medicare contractors; (2) the deceptive contractor activities set forth in those cases or alleged by investigating agents and former contractor employees; and (3) how these activities were carried out without detection by the Health Care Financing Administration (HCFA).