Witty, who largely led the U.S. healthcare giant from the U.K., made big bets on Medicare enrollees that backfired.

Follow the latest UnitedHealthcare CEO shooting news stories and headlines. Get breaking news alerts when you download the ABC News App and subscribe to UnitedHealthcare CEO shooting notifications.

Investors long trusted UnitedHealth to deliver earnings beats, despite limited transparency. Now they want answers.

Mangione was said to have written that he is grateful for both "conservatives" and "liberals," among other things.

Skeptics note that efforts to streamline the much-despised prior authorization system have failed twice before.

A Connecticut man arrested for threatening a local health care CEO cited the murder of UnitedHealthcare CEO Brian Thompson in ...

PG&E has twice hired executive protection staff in the last three months, raising questions about the threats it faces.

BRISTOL, Conn — A local man was arrested after allegedly posting threats to social media targeting the CEO of Bristol ...

Nearly seven months after the fatal shooting of an insurance CEO in New York drew widespread attention to health insurers’ ...

In the wake of the attacks, prominent right-wing social media commentators and conspiracy theorists were quick to falsely lay ...

UnitedHealthcare, CVS Health's Aetna and dozens of other insurers say they plan to reduce the scope of health care claims subject to prior authorization, standardize parts of the process and expand ...

Insurers say the changes will improve access and reduce delays in treatment, but critics warn this is a voluntary pledge, not ...