"We've had a medical community that has been massively overprescribing the drug, " said Kolodny.

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Stark believes that Medicare policy has encouraged overprescribing of Epogen and has been a waste of taxpayer money.

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He was charged with overprescribing drugs to Presley, but he was acquitted.

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George Washington University internist Matthew Mintz says the safety issue "has been blown way out of proportion" and that the bigger threat is underuse, not overprescribing.

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Overprescribing of antibiotics can lead to bacterial infection resistance.

BBC: Antibiotics 'ineffective for coughs'