Officials highlighted a number of initiatives that have helped both prevent health-care fraud and recoup federal money. Those steps included increased funding to expand the Medicare Fraud Strike Force to nine geographic territories.

Authorities said efforts by the strike force and other initiatives led the Justice Department to open 924 new criminal health-care fraud probes in fiscal 2014. Federal prosecutors actually filed criminal charges in nearly 500 cases, involving more than 800 defendants, and 734 defendants were convicted of health-care-related fraud that year.

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Officials also noted how the Affordable Care Act requires the Centers for Medicare and Medicaid Services to use new screening requirements to revalidate all 1.5 million Medicare suppliers and providers.

"As a result of this and other proactive initiatives, CMS has deactivated 470,000 enrollments and revoked nearly 28,000 enrollments to prevent certain providers from re-enrolling and billing the Medicare program," officials said. "Both of these actions immediately stop billing."

CMS also continued a temporary moratorium on the enrollment of new home health and ambulance service providers in six metropolitan areas considered "hot spots" for health fraud: Miami, Chicago, Dallas, Houston, Detroit and Philadelphia.

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$3.3B recouped from health-care fraud