Steve Larsen will step down as director of the Center for Consumer Information and Insurance Oversight (CCIIO) in mid-July. Acting Medicare and Medicaid Administrator Marilyn Tavenner announced Larsen's resignation in an email to employees on Friday.
Larsen's departure comes just as the Supreme Court is set to decide the fate of the Affordable Care Act. The court is expected to rule this month on whether the law's individual mandate is unconstitutional and, if so, whether to throw out the entire law along with it.
CCIIO is implementing the bulk of the new healthcare law, including its consumer protections and new rules that govern insurance companies' spending.
Tavenner said in her email that Mike Hash, now the director of HHS' Office of Health Reform, will step in as CCIIO's interim director while the department looks for a permanent replacement.