Source: Federal health-care enrollment sees four-fold increase in November

First Read confirms that about 100,000 Americans successfully selected health-insurance plans in the federal exchange in November -- up from the nearly 27,000 who did so in October, according to a source familiar with the numbers.

The source adds that the enrollment data is still being scrubbed, but it will either be at 100,000 or slightly above it. And the source emphasizes that the administration is still expecting most enrollment will occur towards the end of the six-month enrollment period, which expires on March 31.

Bloomberg News was the first to report on the 100,000 figure -- and it doesn't include those who have enrolled in states (like California, Kentucky, and Washington) that have set up their own exchanges.

For October, 26,794 had selected plans through the federal exchange, while 79,391 had picked plans through state-based marketplaces.

If that same ratio holds true for November, it's possible that a total of 300,000 to 400,000 Americans could have enrolled last month -- in federal and state exchanges.

But that would still be behind the administration's earlier projections.