What kind of medication formulary is a managed care organization most likely to have?

A managed care organization (MCO) is most likely to have a closed formulary, which restricts coverage to a specific list of medications that are preferred for their cost-effectiveness and therapeutic effectiveness. This approach helps manage healthcare costs while ensuring that patients receive necessary medications. Additionally, MCOs may employ tiered formularies that categorize drugs based on cost and patient copay levels, incentivizing the use of lower-cost alternatives.