HHS Uses AI to Audit Medicaid State Funding
The Department of Health and Human Services (HHS) launched a major new enforcement initiative on May 21, 2026. The program uses artificial intelligence to audit states and federal grant recipients for compliance failures. States that fall short risk losing access to federal funding — including Medicaid dollars. The initiative marks a sharp escalation in the federal government’s approach to healthcare fraud, waste and improper payments.
What the AERO Program Does
HHS named the initiative the Audit Enforcement and Risk Oversight program, known as AERO. The program uses next-generation AI analytical tools to scan at least five years of audit history across all 50 states. Furthermore, HHS sent letters to all 50 state governors and treasurers putting them on notice of the new initiative. Gustav Chiarello, HHS assistant secretary for financial resources, leads the effort.
The Scale of the Problem
The financial stakes are enormous. Chiarello estimated the department has between $100 billion and $200 billion in wasteful or fraudulent spending annually. This figure alone justifies the administration’s decision to deploy advanced technology. Traditional manual auditing methods cannot match that scale. As a result, AI becomes not just a useful tool but a necessary one.
How AI Powers the New Audit Campaign
The AERO program reviews Single Audit data across all 50 states with advanced AI analytical tools to identify grantees with persistent noncompliance issues and enhance funding agency oversight and enforcement of audit findings. Additionally, tools include ChatGPT plus other large language models, targeting chronic noncompliance, repeat deficiencies, material weaknesses and delinquent audit obligations.
From Reactive to Proactive Enforcement
HHS is deploying artificial intelligence to review state audits and cut funding tied to waste, marking a shift from the government’s decades-old pay-and-chase approach to fraud. Previously, federal agencies often discovered fraud only after payments went out. Now, the goal is to catch problems before money leaves federal coffers. This proactive stance represents a fundamental change in federal oversight philosophy.
What HHS Found in Early Reviews
Early results from the AERO initiative reveal significant compliance gaps. Early findings show some audit deficiencies have gone unaddressed for five or more years, and hundreds of grantees have not submitted required audits — some delinquent by more than two years. These findings suggest that chronic noncompliance has persisted largely unchecked for years. Moreover, the scale of the problem exceeded what even HHS officials anticipated before deploying AI tools.
Federal Audit Requirements
States, local governments, nonprofits and higher education institutions that spend at least $1 million in federal money a year must submit annual audits. Despite this long-standing legal requirement, hundreds of entities failed to comply. Consequently, the AERO program targets this gap directly. Any organization spending $1 million or more in federal funds annually now faces AI-driven scrutiny of its audit record.
Which Programs Face Scrutiny
The AERO initiative covers a broad range of HHS-funded programs. The new initiative uses AI to analyze audits from HHS-funded programs, including state Medicaid programs and federal grantees in research, addiction services and more. Therefore, the reach extends well beyond Medicaid alone. Research institutions, addiction treatment providers and childcare programs all fall within scope. No sector of HHS funding escapes review.
Medicaid as the Primary Target
Medicaid represents the largest and most complex piece of the puzzle. HHS’s Office of Inspector General has commenced audits of every single Medicaid Fraud Control Unit across all 50 states. Units that fail to meet performance standards face consequences ranging from funding cuts to outright decertification. This simultaneous audit of all 50 state Medicaid fraud units is unprecedented in scope. It signals that the administration views Medicaid as the central front in its war on healthcare fraud.
Enforcement Actions States Must Prepare For
Noncompliance carries serious consequences. Potential enforcement actions include temporarily withholding payments, disallowing costs, suspending or terminating awards and initiating debarment proceedings. States and grantees face a spectrum of penalties — from temporary payment holds to permanent exclusion from federal programs. Additionally, CMS Administrator Mehmet Oz and Vice President JD Vance on May 13, 2026, threatened to withhold Medicaid funds from all fifty states if they fail to comply with federal anti-fraud statutes.
Prior State Enforcement Actions
The threat is not merely hypothetical. The Trump administration has already withheld hundreds of millions of dollars in Medicaid funds from Minnesota and more than $1 billion from California. Critics argue that enforcement has disproportionately targeted Democrat-led states. Nevertheless, the AERO program’s all-50-states scope signals a broader application going forward.
Context: A Broader Federal Fraud Crackdown
AERO is the latest development in a broad federal fraud enforcement push that has accelerated in the first half of 2026, including Medicaid funding deferrals to Minnesota and California, Medicare enrollment freezes and a requirement that all 50 states audit their Medicaid providers. Furthermore, in February 2026, CMS issued a Request for Information seeking public input on AI methodologies applicable to fraud prevention across Medicare, Medicaid and other federal health programs. Taken together, these actions reflect a systematic, technology-driven transformation of federal healthcare oversight.
2025 Enforcement Baseline
The administration has already demonstrated significant enforcement capacity. The 2025 enforcement baseline cited by CMS includes $5.7 billion in Medicare payments suspended, 122,658 claims denied, 5,586 billing privileges revoked and 372 fraud referrals worth $3.7 billion. AERO aims to build on these results by expanding AI use across Medicaid and other HHS programs.
What States and Grantees Should Do Now
The message from HHS is clear: compliance is no longer optional and ignorance is no longer a defense. Grantees should compile and organize documentation on corrective action, remediation efforts and funding agency feedback, while assessing their procurement of audit services. States with longstanding unresolved audit deficiencies face the greatest immediate risk. Proactive compliance efforts and thorough documentation may help mitigate enforcement risk.
Health systems, nonprofits and state Medicaid agencies should conduct internal reviews of their audit histories now. Any deficiency flagged more than two years ago and never resolved needs immediate attention. Furthermore, organizations that have not filed required annual audits should act urgently. The AERO program is already scanning audit records. The window for self-correction narrows with each passing day.
