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Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
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Methodology•Download Data

⚠️ Important Context

All data on this page comes from publicly available CMS Medicare payment records. Unusual billing patterns may reflect legitimate medical practices (such as high-volume drug administration where each unit is counted as a separate service), data reporting differences, or group practice billing. Inclusion on this page does not constitute an accusation of fraud or wrongdoing. Only law enforcement and regulatory agencies can determine whether billing patterns represent fraud. Providers flagged by our statistical model have billing patterns similar to previously convicted providers, but many may have perfectly legitimate explanations.

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ML Investigation

The Million-Dollar Club

47 AI-Flagged Providers Who Billed Over $1M Each — and Match the Pattern of Convicted Fraudsters

February 21, 2026
11 min read
By OpenMedicare Investigative Team
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⚠️ Important Disclaimer: The providers identified in this analysis are flagged based on statistical patterns, not evidence of wrongdoing. High billing volume alone is not suspicious — many of these providers may serve large, complex patient populations. A high fraud probability score means billing patterns are mathematically similar to those of convicted fraudsters. No provider named here has been accused or charged with any crime unless otherwise noted.

Most of the 500 providers flagged by our AI model bill Medicare in the hundreds of thousands per year — enough to trigger statistical alarm bells, but not enough to stand out in raw dollar terms. Then there are the 47 who crossed the million-dollar threshold.

These aren't just providers with suspicious billing patterns. They're providers with suspicious billing patterns and massive volume. Collectively, they billed Medicare over $93.4M — an average of $2.0M each. Their average fraud probability score is 92.1%.

Not all big billers are fraudsters. Oncologists routinely bill millions due to expensive drug costs. Large group practices can legitimately bill tens of millions. But when a provider bills over $1 million and their billing pattern matches convicted criminals across every metric our model tracks — volume, markup, services per patient, geographic concentration — that's a different story.

📊 The Million-Dollar Club at a Glance

47
providers over $1M
$93M
combined payments
72%
Internal Medicine
92%
avg fraud probability

The Biggest Billers

At the top of the million-dollar club sits Terrance Hughes, an Illinois internist who billed Medicare $5.3M. That's more than six times the average for Internal Medicine providers — and his billing pattern matches convicted fraudsters with a 91.2% probability score.

Rank #294IL · NPI: 1932192068

Terrance Hughes

Internal Medicine

Highest total payments of any flagged provider — $5.3M from Medicare with a 4.12 services-per-beneficiary ratio

$5.3M
total payments
91.2% prob
Markup: 2.41×
Services/Beneficiary: 4.12
Rank #52FL · NPI: 1003837076

Remy Zockazock

Internal Medicine

South Florida internist with $4.1M in payments — high probability and high volume

$4.1M
total payments
93.7% prob
Markup: 2.18×
Services/Beneficiary: 3.87
Rank #349CA · NPI: 1407894990

Edwin Yau

Internal Medicine

California internist billing $3.8M — the state's highest-billing flagged provider

$3.8M
total payments
90.8% prob
Markup: 2.33×
Services/Beneficiary: 3.55
Rank #254TX · NPI: 1952487530

Chinh Mai

Internal Medicine

Texas internist with $3.3M and nearly 4 services per beneficiary — well above the specialty average

$3.3M
total payments
91.8% prob
Markup: 2.27×
Services/Beneficiary: 3.91

What Makes High-Volume Flagged Providers Different?

The million-dollar flagged providers aren't just scaled-up versions of typical suspicious billers. They have a distinct profile:

Million-Dollar Club (47 providers)

  • • Avg payments: $2.0M
  • • Avg markup ratio: 2.31×
  • • Avg services/beneficiary: 3.64
  • • 72% Internal Medicine
  • • Concentrated in CA, FL, IL, TX

Other Flagged Providers (453)

  • • Avg payments: $680.0K
  • • Avg markup ratio: 2.15×
  • • Avg services/beneficiary: 2.89
  • • 51% Internal Medicine
  • • More geographically dispersed

The million-dollar group has higher markup ratios, more services per beneficiary, and is even more concentrated in Internal Medicine than the broader flagged pool. They're not just billing more — they're billing differently. Higher intensity per patient, higher charges relative to what Medicare allows, and more services packed into each patient encounter.

Not All Big Billers Are Fraudsters — But These Match the Pattern

This is an important distinction. Medicare has thousands of providers who legitimately bill over $1 million per year. Oncologists administering chemotherapy drugs can bill $5–10M+. Large multi-provider group practices bill tens of millions. High-volume surgical practices serve hundreds of patients.

What sets the million-dollar club apart isn't the dollar amount — it's that these providers match convicted fraudsters across every dimension our model evaluates:

🚩 The Full Pattern Match

  • ✓ Volume: High total services and beneficiary counts
  • ✓ Markup: Charging 2–3× what Medicare allows (vs. 1.5× typical)
  • ✓ Intensity: 3.5+ services per beneficiary (vs. 1.8 average)
  • ✓ Specialty: Overwhelmingly Internal Medicine (72%)
  • ✓ Geography: Concentrated in known fraud hotspot states
  • ✓ Code distribution: Heavy on high-paying E&M codes

Each factor alone could be explained. All six together, matching the exact signature of convicted criminals? That's what our model is designed to detect.

The question isn't whether these providers are billing a lot of money. Plenty of legitimate providers do. The question is why their billing patterns look identical to people who went to prison.

🔍 Search All 500 Flagged Providers

Full searchable list with fraud probability scores, billing data, and provider profiles.

📞 Report Fraud

HHS OIG hotline and False Claims Act whistleblower information.

Data Sources

  • • CMS Medicare Provider Utilization and Payment Data (2014–2023)
  • • HHS Office of Inspector General — List of Excluded Individuals/Entities (LEIE)
  • • OpenMedicare ML Model v2.0 (Random Forest, AUC 0.83)
  • • Provider-level billing aggregates from public CMS data

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

Related Investigations

The Algorithm Knows

How AI trained on 8,300 convicted fraudsters found 500 providers who bill just like them.

Internal Medicine Crisis

Why 53% of all flagged providers are Internal Medicine specialists.

The Fraud Belt

Why California and Florida lead Medicare fraud — 56 flagged providers each.