HHS Identifies One Million ACA Enrollees Lacking Social Security Numbers in Ongoing Fraud Review

The June 27, 2026 announcement by Kennedy and Oz detailed exploitation of ACA enrollment systems where applicants bypassed identity checks. Federal data from prior CMS improper payment reports show marketplace error rates exceeded 20 percent in multiple years, with ineligible or unverifiable enrollees driving subsidy outlays above $100 billion annually. The current review targets recovery of funds paid to plans for these enrollees.

Primary records from the Government Accountability Office document repeated findings of weak identity verification across ACA exchanges since 2014, including cases where enrollees used ITINs or no identifiers. This pattern aligns with broader entitlement program vulnerabilities where administrative capacity lagged enrollment surges, allowing third-party assisters to submit incomplete applications for commission-based compensation.

The administration's shift allocates additional CMS staff to cross-check Treasury and SSA databases against existing enrollee files. Prior administrations reported similar issues but maintained lower audit volumes, resulting in cumulative improper payments estimated by CBO at tens of billions across Medicaid and ACA combined.

Next steps include mandatory SSN submission for all marketplace renewals starting 2027 and enhanced data-sharing agreements between HHS and SSA. Recovery actions will prioritize plans with highest concentrations of unverifiable enrollees.