Social Security numbers, names and addresses for millions of people who arent customers of Anthem Inc. may have been breached in a massive cyberattack disclosed by the health insurer earlier this month.

Tenet Healthcare Corp. reported earnings that beat analysts estimates as the hospital company saw increased revenue from higher admissions and fewer uninsured patients under Obamacare.

In a year when former National Security Agency contractor Edward Snowdens revelations about the collection of U.S. phone data have sparked privacy fears, data miners have been quietly using their tools to peek into Americas medicine cabinets.

Longer term, questions remain on whether the slowdown seen recently in health-care costs can be definitively tied to PPACA or whether it was the result of a slow recovery from the 2008-09 recession.

WellPoint Inc., the second-biggest U.S. health insurer, boosted its annual profit forecast as the industry starts to see gains from customers buying its products through the Obamacare overhaul.

UnitedHealth Group Inc., the biggest health insurer by sales, beat analyst earnings estimates as revenue grew from its technology and consulting unit that helped fix the PPACA insurance website.

Aetna Inc., the third-largest carrier, reported profit that beat analyst estimates and raised its forecast as membership rose for the eighth consecutive quarter.