The big hikes come after two years in which California officials had boasted that the program helped insure hundreds of thousands people in the state while keeping costs moderately in check.
Premiums in the insurance program called Covered California rose just 4% in 2016, after rising 4.2% in 2015 — the first year that exchange officials negotiated with insurers.
On Tuesday, officials blamed next year’s premium hikes in the program that insures 1.4 million Californians on rising costs of medical care, including expensive specialty drugs and the end of a mechanism that held down rates for the first three years of Obamacare.
Two of the state’s biggest insurers — Blue Shield of California and Anthem Inc. — asked for the biggest hikes. Blue Shield’s premiums jumped by an average of more than 19%, according to officials, and Anthem’s rates rose by more than 16%.