Many will have to pay more, or shop for a new plan or a new insurer.
Connect for Health Colorado
Last year, some people faced delays to see if they qualified for government insurance.
Researchers attribute the drop to the state's embracing of the Affordable Care Act.
Some plans will cost more, some less.
The cost to set up Connect for Health was paid almost entirely by federal grants. Those grants run out next year.
With demand for primary care rising, one physicians group says the state needs to proactively recruit and train more doctors in the field. But the major changes happening in health care make it hard to know just how many doctors the state needs.