The Massachusetts Health Connector is preparing for a signup surge as the state's deadline for enrolling in 2015 insurance coverage approaches.
The agency says more than 100,000 residents who must pay some or all of their premiums have registered online, but so far, only 18 percent have chosen a plan and paid.
Still, those 18,000 people are double the number who had paid a week ago.
The deadline is Tuesday for those who want to be covered on the first of the year. The site's director, Maydad Cohen, is urging residents to take action this weekend.
"Because we expect high, high volumes Monday and Tuesday," Cohen said. "High volume typically results in longer wait times. And we do want to make sure people can access health insurance, and make sure that they pick and pay for that plan."
The Connector office will be open during the day for residents who do not have access to a computer.