By Sam Baker - 09/07/11 07:54 PM EDT
Federal officials announced Wednesday that they've charged 91 people with defrauding Medicare by nearly $300 million.
Officials from the Justice Department and the Health and Human Services Department announced the charges, which stem from investigations by a joint "strike force" that targets Medicare fraud.
The charges represent the single largest "takedown" since the Medicare Fraud Strike Force was formed in 2007, according to HHS.
Prosecutors unsealed indictments against 70 medical professionals Tuesday and Wednesday. Those 70 people are accused of participating in Medicare fraud schemes totaling roughly $264 million. A handful of other indictments over the past few weeks bring the total to $295 million.
Prosecutors say the defendants billed Medicare for services that weren't needed — and many that were never actually provided.
Most of the alleged schemes took place in Miami, well known as a hotbed of Medicare fraud.