Core and Group Health

EmblemHealth is also supposed to pay restitution to enrollees who paid for out-of-network behavioral health care and improve enrollees' access to behavioral health care providers.

Under the law, PBMs must allow any pharmacy to participate in their network and allow patients to use their pharmacy of choice.

Jessica Brooks Woods, the outgoing CEO, has been a longtime advocate for health care access.

That company and four other big players overcame all of the negativity to generate about $180 billion in total revenue.

"If North Carolina is any guide, such regulation can be effective at leveling the playing field between the fully insured and self-funded markets," an analyst at Georgetown University's Center for Health Insurance Reforms said.

Earlier this month, following unfavorable court rulings, the agency halted a pilot program that would have changed the way in which rebates are applied.