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BySRSam Reyes·CMCal Morrow·EQEliza Quinn·DPDana Park
BREAKINGMay 30, 2026

More Than $100 Million Was Billed for Medically Questionable Vascular Procedures, Government Watchdog Finds

The Department of Health and Human Services Office of Inspector General released a report finding that approximately $105 million in Medicare payments in 2023 were billed for vascular procedures that appear medically unnecessary or questionable. The report flagged nearly 140 doctors with concerning billing patterns, with a small group of about 26 physicians accounting for 61 percent of the suspicious payments, each averaging around $3 million in reimbursements.

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Are vascular procedures being oversold to vulnerable patients, or is government overreaching into medical judgment calls that should stay between doctors and patients? A federal watchdog found over $100 million in questionable billings—and the real debate is who decides what's medically necessary.

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Government enforcement gap enables systemic fraud
Liberal
CMS identified overpayment patterns in 2019 but waited five years to launch formal investigation, during which 30,000 patients underwent unnecessary procedures. Meanwhile, only 15 providers faced recovery actions despite 140 flagged with concerning patterns — that's a choice to let fraud scale, not a resource problem.
Conservative
You're right that the enforcement lag is indefensible, but calling it a 'choice' misses the structural problem: even aggressive enforcement can't fix a payment model that makes overtreatment financially rational in real time. You can prosecute 15 providers today and 15 more will optimize their billing tomorrow because the incentive engine never shut down.
Liberal
Enforcement failures and bad incentives aren't mutually exclusive — we need both faster prosecution and payment reform. But the $105 million happened on your watch while waiting for the perfect structural solution; aggressive federal action stops the bleeding now.
Conservative
Agreed on doing both. The question is which lever actually moves the outcome: tighter auditing of a fundamentally misaligned system, or changing the system itself. You can't prosecute your way out of perverse incentives.
Fee-for-service structure versus market-based alternatives
Liberal
You claim private insurance and market competition would catch this through prior authorization and cost-sharing. But Medicare Advantage — the direct private-sector alternative within Medicare itself — has its own documented fraud epidemics centered on diagnosis upcoding. The problem isn't government payment; it's misaligned financial incentives wherever they exist.
Conservative
Medicare Advantage fraud through coding is real, but it's a different pathology than procedure overuse — you can audit codes more easily than you can reverse unnecessary surgeries. Prior authorization creates friction before the intervention happens, which is structurally different from catching billing lies after the fact. And patient cost-sharing in HSA-paired plans gives individuals actual skin in the decision in ways Medicare's third-party payment never does.
Liberal
Prior authorization in private insurance also denies necessary care and imposes massive administrative costs — we've documented that for years. If private mechanisms also fail, then your anti-government framing collapses; the real issue is enforcement everywhere, not the payer type.
Conservative
The fact that prior auth has its own failures doesn't mean it doesn't work better at preventing overuse in this specific context; those are separate questions. Value-based payment arrangements remove the volume incentive entirely rather than adding oversight layers that slow everything down.
Geographic concentration suggests targeting vulnerable populations
Liberal
Half the flagged physicians practice in California and Texas — working-class areas with large immigrant and low-income Medicare populations least positioned to seek second opinions. This isn't random; predatory billing clusters where patients can't fight back. Dr. Serrano's 20-patient case implies a catastrophic per-patient fraud rate if extrapolated to 30,000 affected patients.
Conservative
The geographic clustering does suggest either regulatory weakness in those states or expansion of office-based labs where federal oversight is thinner — but that's an argument for targeted enforcement and state-federal coordination, not a reason to overhaul national payment architecture. Protecting vulnerable populations is a real priority, but prior authorization requirements affect them too, sometimes by delaying needed care.
Liberal
Then make enforcement a law-enforcement priority — mandate independent review before invasive procedures on early-stage disease specifically, the cases representing 1 in 4 of these suspicious procedures. You don't need to reshape all of Medicare to stop 26 doctors from billing $3 million each.
Conservative
Independent review for early-stage disease is reasonable if it's genuinely limited to that population. But once you embed review requirements in Medicare, the pressure to expand them is relentless, and you've created the exact prior-auth burden you're trying to avoid in private insurance.
Scale of unnecessary procedures and clinical harm
Liberal
Nearly 30,000 patients underwent invasive vascular procedures for mild disease against major medical society guidelines — roughly 1 in 4 procedures were on early-stage patients who should have received watchful waiting. That's not a billing irregularity; that's a predatory business model paid for with patients' limbs and lives.
Conservative
The clinical harm is real and the patient numbers are staggering, but 30,000 is spread across thousands of physicians — the median suspicious billings are far lower than the 26-physician average you're emphasizing. The question is whether enforcement action against outliers, or payment reform affecting all providers, is the faster and more proportionate response.
Liberal
The outliers are the clearest cases — exclude them from Medicare immediately, not settlement payments. That's not waiting for structural reform; that's using the enforcement tools that exist now while working on the incentive problem.
Conservative
Fair point on using exclusion more aggressively. But excluding 26 physicians from a program affecting millions of beneficiaries treats the symptom. You're still left with a payment model that rewards the next cohort of physicians to push the boundaries.
Timeline for reform: immediate enforcement versus structural change
Liberal
You're essentially saying to wait for value-based payment models to scale before stopping obvious fraud — that's asking 30,000 patients to absorb unnecessary surgery while we redesign Medicare. Aggressive federal prosecution and mandatory pre-procedure review stop the harm now.
Conservative
I'm not saying wait — I'm saying enforcement action and payment reform need to happen simultaneously, and rushing into prior-authorization mandates without getting the threshold-setting right can harm patients with genuine rapid-progression disease. Value-based care is already being piloted; acceleration is reasonable, but it won't happen overnight.
Liberal
Then specify the threshold for early-stage disease that triggers review and exempt fast-progression cases. You can implement intelligent guardrails in months; you can't wait for full Medicare payment restructuring while physicians average $3 million in suspicious billings.
Conservative
That's a workable compromise on the enforcement side. The structural question — whether fee-for-service really needs to end — remains separate, and probably unsettled until you see whether tight review thresholds actually curb the behavior.
Root cause: incentive structure versus regulatory failure
Liberal
You keep framing this as a choice between enforcement and payment reform, but enforcement failure preceded incentive failure — CMS sat on identified patterns for five years. That's not structural inevitability; that's bureaucratic neglect. Fix the enforcement first, then address whether fee-for-service needs reform.
Conservative
The five-year lag is indefensible, but it's a symptom of the underlying problem: a fee-for-service system where the bureaucracy's job is to police an inherently misaligned incentive rather than eliminate it. You can fire the entire CMS leadership and hire aggressive prosecutors, but they'll still be prosecuting the next wave of physicians because the economic logic hasn't changed.
Liberal
Then why haven't Medicare Advantage plans solved this with their fraud-prevention infrastructure? Because the problem isn't uniquely federal — it's that wherever financial incentives reward volume over outcomes, someone will optimize toward fraud. The answer is enforcement everywhere, starting with the $105 million being billed right now.
Conservative
Medicare Advantage has upcoding fraud, which is harder to prevent; fee-for-service has procedure overuse, which value-based payment directly eliminates by severing the link between volume and revenue. Both need enforcement, but only one changes the underlying calculus.
Conservative's hardest question
The strongest challenge to the market-based argument is that private insurance prior authorization has its own well-documented failure modes — denying necessary care and imposing administrative costs — and there is limited evidence that Medicare Advantage plans, the most direct market-based Medicare alternative, have consistently outperformed traditional Medicare on fraud prevention at scale. If private-sector mechanisms also fail to catch systematic overtreatment, the structural payment reform argument survives but the anti-government-program framing is significantly weakened.
Liberal's hardest question
Mandatory independent review requirements before invasive vascular procedures could delay urgent care for patients with rapidly progressing peripheral artery disease, creating real clinical harm through bureaucratic latency. Any enforcement reform that adds prior authorization layers must carefully exempt emergency and fast-progression presentations, or the cure risks injuring the patients it is designed to protect.
The Verdict
Both sides agree
Both sides accept that the OIG's finding of $105 million in suspicious vascular procedure billings in 2023, concentrated among 26 high-billing physicians, represents a genuine and significant program integrity failure that demands corrective action.
The real conflict
Fact/causation: Conservatives argue that fee-for-service reimbursement architecture structurally incentivized the overtreatment, making fraud rational; liberals argue that adequate federal enforcement and prosecution would deter the same behavior under current payment structures, treating incentive-alignment as a design problem rather than an enforcement problem.
What nobody has answered
If the 26 high-billing physicians genuinely believed their clinical judgment was defensible and their procedures appropriate (a claim none appear to have made, but neither side directly addresses), what information asymmetry or financial pressure would need to exist for a reasonable physician to reach such dramatically different conclusions from peers — and if such pressure exists, why is it acceptable to rely on prosecution rather than removing it?
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