To repeal the Affordable Care Act unless the initial enrollment target for Exchanges has been met, and for other purposes.

Nullifying Unconstitutional Mandate By Evaluating Results Act or the NUMBER Act - Repeals the Patient Protection and Affordable Care Act and the health care provisions of the Health Care and Education and Reconciliation Act of 2010, effective as of their enactment, unless the Comptroller General certifies to Congress that at least 7 million individuals have been successfully enrolled in qualified health plans through a health care exchange during the enrollment period ending on March 31, 2014.