Sticker shock awaits thousands of people with health coverage through PreferredOne, the top seller on the MNsure exchange during its first year.
The Golden Valley-based insurer said Wednesday that its individual market subscribers will see an average premium increase next year of 63 percent due to high claims costs.
"Given the volatility of the individual marketplace due to the first year of the [federal health law], this increase is a significant step at stabilizing our rates and plans for the years to come," the company said in a statement.
The announcement represents a startling turnaround for an insurer that offered some of the lowest premiums anywhere in the country in 2014.
It also promises to rekindle debate about whether the state Commerce Department misled consumers earlier this month by broadcasting that rates on MNsure would increase an average of 4.5 percent. PreferredOne wasn't part of the calculation, Commerce officials said at the time, because it won't be selling policies next year on MNsure.
Historically, PreferredOne has been a small player in the state's market for individuals who purchase health insurance for themselves, rather than getting coverage from an employer or the government.
In 2013, the company had a 2.8 percent share of the state's individual market, placing it behind Blue Cross and Blue Shield of Minnesota, Medica, HealthPartners and Assurant. But the launch of the state's MNsure health exchange in 2013 gave PreferredOne a chance to stand out, with low rates that consumers could see more easily with changes under the federal Affordable Care Act.
On MNsure, the company leapfrogged its rivals.