In this segment of the Motley Fool's Market Check-Up, Fool health-care analyst David Williamson takes investors through some of the biggest stories affecting Big Pharma, biotech stocks, and the health insurance industry today.

In this segment as part of the Motley Fool's continuing coverage of Obamacare, David discusses the significance for the law of the December 23rd deadline, the last day for enrollees to be assured that they would experience no drop in coverage come January 1st. David also discusses the new enrollment numbers, and how they are ramping up significantly from where they were at the rollout of the program, and he discusses some of the problems Obamacare, health insurers, and insurees could face as a result of the new legislation in 2014.

David Williamson owns shares of UnitedHealth Group. The Motley Fool recommends UnitedHealth Group. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.