Roughly 20 million more Americans have health insurance now than when President Obama’s health care law was passed in 2010.

The 2010 health law was meant to expand insurance coverage so that Americans could get medical care they would otherwise go without — and not spend a fortune doing so. Though it’s still early, new evidence suggests this scenario is playing out.

The Obama administration has launched a probe into whether health-care providers such as dialysis centers are steering patients eligible for Medicare and Medicaid benefits into insurance plans offered on the health law’s exchanges.

Medicare spending on prescriptions increased more than 17% in 2014, despite a claims increase of only about 3%, according to data released Thursday.

The Obama administration is moving to end duplicate coverage for tens of thousands of people who are enrolled in Medicaid and simultaneously receiving federal subsidies to help pay for private health insurance under the Affordable Care Act.

The “most important factor” that drives prescription drug prices higher in the United States than anywhere else in the world is the existence of government-protected “monopoly” rights for drug manufacturers, researchers at Harvard Medical School report today.