U.S. Health and Human Services Secretary Kathleen Sebelius. (File)
The Health and Human Services secretary will testify in D.C. next week.
Kathleen Sebelius will answer questions about healthcare.gov.
She'll go before the House's Energy and Commerce Committee on October 30.
Some republican lawmakers have called for Sebelius' resignation over the site's problems.
Website and administrative contractors CGI, Serco and Equifax are also set to testify next week.