The Expansion Divide: How 9 States Carry America's FQHC Uninsured Burden

Every Federally Qualified Health Center serves everyone who walks in, regardless of ability to pay. But who walks in — and how they're covered — depends enormously on a decision each state made years ago: whether to expand Medicaid under the Affordable Care Act. HRSA's 2024 Uniform Data System makes the consequence measurable.

The national footprint

Outside California and Texas — the two states we track in depth — there are 1,236 FQHC organizations operating 15,195 service sites across 57 states and territories, serving 25.5M patients a year. Nationally, their payer mix is 44.4% Medicaid, 18.4% uninsured, and 12.2% Medicare. That national average hides the real story.

The divide

Split those health centers by their state's Medicaid decision and two different safety nets appear:

The uninsured share runs 9.8 percentage points higher at non-expansion-state FQHCs, while Medicaid — the program that pays for care in expansion states — falls from 46.4% to 33.6%.

The coverage the ACA was designed to provide simply isn't there, so the health center becomes the coverage of last resort. The 9 non-expansion states are Alabama, Florida, Georgia, Kansas, Mississippi, South Carolina, Tennessee, Wisconsin, Wyoming.

Why the timing matters

The enhanced ACA Marketplace premium tax credits — which made Marketplace coverage affordable for millions since 2021 — are scheduled to expire at the end of 2025. When they lapse, premiums jump and coverage falls fastest among the working-poor population that non-expansion states leave in the gap: too much income for limited Medicaid, too little to afford an unsubsidized plan.

Those patients don't disappear. They show up at the FQHC, uninsured.

What FQHC leaders should watch

If you lead a health center in a non-expansion state, your exposure isn't the Medicaid work requirements that dominate expansion-state planning — it's the self-pay and sliding-fee line.

Three things to model now: the share of your panel on subsidized Marketplace plans that lapse in 2026; your 340B savings, which scale with the volume that keeps the doors open; and your state's posture on any partial-coverage workaround.

The expansion divide isn't abstract policy — it's the payer mix on next year's budget.