The Medicaid Managed Care Organization (MCO)

How States Outsource Healthcare for the Poor

Most people know about Medicare Advantage. Far fewer know that Medicaid — healthcare for 90+ million low-income Americans — has its own managed care system. Over 70% of Medicaid beneficiaries are enrolled in managed care plans. Centene, the largest Medicaid MCO, has more enrollees than UnitedHealthcare’s Medicare Advantage business.

What It Is

A Medicaid MCO is a health plan that contracts with a state Medicaid agency to provide Medicaid benefits in exchange for a per-member, per-month capitated payment. Unlike MA (which CMS runs nationally), each state designs its own Medicaid managed care program.

Why It Exists

States adopted MCOs to make Medicaid budgets predictable (fixed monthly payments instead of open-ended fee-for-service), improve care coordination for medically complex populations, and leverage managed care tools for people with significant social determinant challenges.

The Tradeoffs

The upside: Budget predictability. Care coordination for complex populations. Can integrate physical health, behavioral health, and long-term services.

The downside: Capitation rates are often inadequate, squeezing provider reimbursement. Fifty different state programs mean fifty different rule sets. Prior authorization can impede access for vulnerable populations. Publicly traded MCOs extracting profit from Medicaid dollars is politically contentious.

The Bottom Line

Medicaid managed care is a $400+ billion market that doesn’t get the attention it deserves. If you’re building for healthcare’s most vulnerable populations, you need to understand how MCOs work, because they control the dollars and the networks.