The Centers for Medicare and Medicaid Services will audit every Medicare Advantage plan, every year to root out improper spending.

The Trump administration plans to expand government audits of private Medicare health plans, adding more scrutiny to an industry that’s been a profit driver for insurers.

Key Takeaways Shares of Humana and other health insurers fell Thursday after the Centers for Medicare & Medicaid Services said it plans a "significant expansion" of its auditing efforts for Medicare Advantage plans.