President Barack Obama said on Friday more than half a million Americans enrolled in health insurance plans under Obamacare using the HealthCare.gov website during the first three weeks of December.
(Read more: Missing million: Obamacare's direct-enrollment flop)
"More than half a million Americans have enrolled through HealthCare.gov in the first 3 weeks of December alone," President Obama said in his final press conference of 2013. "Millions of Americans are now poised to be covered by quality, affordable health insurance come New Year's Day."
That brings the total enrollments through state and federal marketplaces to more than 1 million people to date, based on rough estimates of updated state and federal data, senior administration officials said.
Obama said that last-minute exemptions from the law announced on Thursday provided an additional safety net for a small group of people, and said he took the blame for the poor rollout of his signature policy achievement.