More than 400,000 Medicare beneficiaries who may have been confused or misinformed about the pharmacy details of their 2015 Aetna prescription drug plans have until the end of this month to find participating pharmacies or switch plans, according to the Centers for Medicare & Medicaid Services.

Insurance giant Anthem Blue Cross leads Obamacare enrollment in California, but Kaiser Permanente is gaining on its archrival.

On Monday, President Obama unveiled a $4 trillion budget request for fiscal year 2016 that includes a number of health care initiatives, the AP/San Francisco Chronicle reports.

More than 10.1 million people have enrolled in Medicaid and the Children's Health Insurance Program in the first 14 months since marketplace enrollment began, the Obama administration reported Monday.

Consumers who received too much in federal tax credits when buying insurance on the health law's marketplaces last year got a reprieve of sorts from the Internal Revenue Service this week.

The Obama administration will make historic changes to how the U.S. pays its annual $3 trillion health-care bill, aiming to curtail a costly habit of paying doctors and hospitals without regard to quality or effectiveness.