U.S. Rep. Erik Paulsen will hear from Marilyn Tavenner, head of the Centers for Medicare & Medicaid Services, today about the rocky rollout of the HealthCare.gov website during a House Ways and Means Committee hearing on Capitol Hill.

The website is supposed to allow uninsured people to sign up and register for health insurance under the Affordable Care Act, President Obama's health care reform law, but the site has been plagued by problems.

Tavenner will be the first Obama administration official to testify before Congress about the efforts of her agency to implement the law. Her agency, which had experience running a site for Medicare drug plans, was tasked with responsibility for the site. Last week, the agency hired contractor Quality Software Services Inc., a subsidiary of Minnetonka-based UnitedHealth Group Inc., to be the general manager for the effort to fix the troubled website.

Tavenner likely will face questions from Paulsen and others about the administration's claims that everything was on track for a successful launch.