Donna Nickerson spent her last working years as the activity and social services director at a Turlock, Calif., nursing home.

A new wave of failures among ObamaCare's nonprofit health insurers is disrupting coverage for thousands of enrollees and raising questions about whether regulators could have acted earlier to head off some of the problems.

Only days after Judy Hanttula came home from the hospital after surgery last November, her doctor’s office called with bad news: Records showed that instead of traditional Medicare, she had a private Medicare Advantage plan, and her doctor and hospital were not in its network.

President Barack Obama recently signed a law aimed at addressing the burgeoning opioid crisis in the US.

Anthem Inc. is pushing for a speedy decision on the government’s bid to block the health insurer’s planned $48 billion merger with rival Cigna Corp. The government doesn’t want that, and on Wednesday its lawyers told a federal judge the case is too complex to rush a ruling.

The big rate increases announced last week for health insurance policies sold by California’s version of the federal health reform are the latest evidence that the Affordable Care Act, despite its name, cannot do much to tame the rise of health care costs.