Witty's comments came during the company's first earnings call since the killing of Brian Thompson, the CEO of the company's insurance arm UnitedHealthcare.

UnitedHealth Group CEO Andrew Witty honored Brian Thompson, the health insurance executive murdered last month, praising his dedication to improving the U.S. health care system. Witty acknowledged public support following the tragedy and highlighted the nation’s costly health care as the root issue behind access and quality concerns.

UnitedHealth has named a new head of its insurance segment less than two months after the death of a former executive.

The updated tally extends the scope beyond what was previously described by company Chief Executive Andrew Witty.

The new estimate nearly doubles the company’s previous report of 100 million affected individuals, already the largest healthcare data breach ever reported to federal regulators.

The number of individuals confirmed to be affected by the data breach is almost double the company's previous estimate.

Change Healthcare now estimates that 190 million people were affected in the massive cyberattack that took down its services nearly a year ago. | Change Healthcare now estimates that 190 million people were affected in the massive cyberattack that took down its services nearly a year ago.

CEO Andrew Witty promised that UnitedHealthcare would work to speed up turnaround times for approval of some procedures and services in Medicare Advantage plans.

The cyberattack at UnitedHealth Group exposed personal information of 190 million people, leading to a $22 million ransom payment in bitcoin.

UnitedHealth Group said veteran internal executive Tim Noel will succeed the late Brian Thompson as CEO of UnitedHealthcare, the nation’s largest health insurance company.

Andrew Witty, chief executive officer of UnitedHealth Group, testifies at a May 2024 Senate Finance Committee hearing examining cyber attacks on health care and the Change Healthcare cyberattack.

After a dip in the wake of the release of UnitedHealth Group's Q4 2024 earnings figures, shares in the company and other managed care insurers have largely bounced back.