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UnitedHealth says in a statement it stands “firmly behind” the integrity of its Medicare Advantage business.Mike Blake/Reuters

Investigators from the U.S. Department of Justice are questioning former employees of UnitedHealth Group UNH-N over how the company deployed doctors and nurses to gather diagnoses that bolstered its Medicare payments, the Wall Street Journal reported on Wednesday, citing people familiar with the matter.

The WSJ report said former employees were questioned by prosecutors working for the healthcare-fraud unit in recent weeks about the company’s efforts to record specific diagnoses that generate higher payments and document lucrative diagnoses, including testing patients and sending nurses to patients’ homes.

UnitedHealth said in a statement it stands “firmly behind” the integrity of its Medicare Advantage business. It also said the WSJ article was “relying on incomplete data, a predetermined narrative and a flawed understanding of how the Medicare Advantage program works.”

“After more than a decade of a similar Department of Justice challenge to our Medicare Advantage business, the Special Master concluded there was no evidence to support the claims that we were overpaid or engaged in any wrongdoing.”

The DOJ did not immediately respond to a Reuters request for comment.

Once considered a reliable bet, the healthcare behemoth has lost its appeal following a series of management missteps. UnitedHealth’s stock has fallen nearly 40 per cent so far this year.

The WSJ reported in May that the healthcare-fraud unit was overseeing an investigation into the company’s Medicare business, the U.S. government program that covers medical costs for individuals aged 65 or older and those with disabilities.

The report came a day after UnitedHealth suspended its annual forecast due to surging medical costs and said that former CEO Stephen Hemsley would replace Andrew Witty.

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Study and track financial data on any traded entity: click to open the full quote page. Data updated as of 27/04/26 6:30pm EDT.

SymbolName% changeLast
UNH-N
Unitedhealth Group Inc
-0.06%354.69

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