Story highlights 301 individuals are charged with about $900 million worth of false billing

Cases involve Medicare and Medicaid fraud

(CNN) The Justice Department announced Wednesday it's charging hundreds of individuals across the country with committing Medicare fraud worth hundreds of millions of dollars.

It's the largest takedown in history -- both in terms of the number of people charged and the loss amount, according to the Justice Department.

The majority of the cases being prosecuted involve separate fraudulent billings to Medicare, Medicaid or both for treatments that were never provided.

In one case, a Detroit clinic that was actually a front for a narcotics diversion scheme billed Medicare for more than $36 million, the Justice Department said.

The takedown: By the numbers $900 million in false billing $38 million sent from Medicare and Medicaid to one clinic to carry out medically unnecessary treatments $36 million billed to Medicare by a Detroit clinic that was actually a front for a narcotics diversion scheme 1,000 law enforcement personnel involved 301 defendants charged across the United States 61 of those charged are medical professionals 36 federal judicial districts involved 28 of those charged are doctors Source: U.S. Departments of Justice and Health and Human Services

A doctor in Texas has been charged with participating in schemes to bill Medicare for "medically unnecessary home health services that were often not provided."

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