Ambulatory Surgery Centers Profits 2026: What JAMA Found

Ambulatory Surgery Centers Are Posting High Profits: What the JAMA Report Reveals About Where Healthcare Margin Is Going

Introduction

A report published in JAMA has confirmed what many health economists have suspected for years: ambulatory surgery centers are among the most profitable facilities in American healthcare, generating margins that substantially exceed those of hospital outpatient departments performing comparable procedures. The findings arrive at a moment when hospital systems are increasingly stressed financially, when patients are being directed toward lower-cost outpatient settings by their insurers, and when private equity investment in ambulatory surgical infrastructure is growing rapidly.

The core question the JAMA data raises is deceptively simple: if ambulatory surgery centers are highly profitable, where is that profit going, and what does its distribution mean for the broader healthcare system? The answer involves ownership structure, physician incentives, insurer contracting strategy, and the long-running policy debate about the appropriate payment differential between hospital outpatient departments and freestanding ambulatory facilities.

Understanding this story properly requires looking at what ambulatory surgery centers are, why they generate high margins, who owns them and benefits financially, and what the policy and patient care implications of their rapid growth actually are.

Understanding Ambulatory Surgery Centers and Their Financial Model

An ambulatory surgery center, commonly called an ASC, is a facility licensed to perform same-day surgical procedures that do not require an overnight hospital stay. ASCs perform a wide range of procedures including orthopedic surgeries such as knee and hip replacements, ophthalmologic procedures such as cataract removal, gastroenterological procedures such as colonoscopies and upper endoscopies, pain management injections, and increasingly, cardiovascular procedures that have migrated to the outpatient setting as technology and clinical confidence have improved.

The financial model of an ASC differs from a hospital outpatient department in several important ways. ASCs are purpose-built for specific procedure categories, which allows them to optimize their physical space, equipment, staffing patterns, and scheduling systems for efficiency in a way that a hospital outpatient department, which handles a much broader mix of services, cannot replicate. An ASC performing five hundred colonoscopies per month has a supply chain, staffing model, and room turnover process that is finely tuned for exactly that procedure. A hospital GI suite performing two hundred colonoscopies alongside other procedures in shared space operates at lower efficiency by comparison.

ASCs also benefit from a structurally different payor mix than hospital outpatient departments. Because they perform primarily elective procedures on patients who can schedule in advance, ASCs tend to have higher proportions of commercially insured and Medicare patients relative to Medicaid and uninsured patients than hospital emergency and inpatient services carry. This payer mix advantage is significant because commercial insurance rates are substantially higher than Medicaid rates, and Medicaid and uninsured care generate the most financial pressure on hospital operating margins.

The physician ownership dimension is also central to ASC economics. Under Stark Law exceptions that permit physician self-referral in certain ASC ownership structures, physicians who own stakes in ASCs can refer their patients to those facilities and share in the facility fee income that results. This creates strong physician incentives that hospital systems find difficult to compete with through employment relationships alone.

Primary Findings from the JAMA Report

The JAMA report analyzed operating margins at ASCs across procedure categories and compared them with hospital outpatient department margins for similar services. The findings showed that ASC operating margins for many high-volume elective procedure categories substantially exceeded hospital outpatient department margins for the same services, with particularly high profitability in orthopedic, ophthalmologic, and gastroenterological procedures.

Several factors drive this margin difference beyond the efficiency advantages described above. Medicare pays hospital outpatient departments more than it pays ASCs for the same procedures, a differential intended to account for the higher overhead of maintaining a full-service hospital. However, commercial insurers often pay ASCs at rates that exceed the Medicare ASC rate significantly, and in some markets where ASCs are owned by physician groups with strong market position, commercial negotiated rates for ASC services have reached levels that generate margins well above what Medicare alone would support.

The JAMA data also revealed geographic variation in ASC profitability. Markets with high concentrations of commercially insured patients, limited hospital system control over ASC development, and physician groups that have invested heavily in outpatient infrastructure show the highest ASC margins. Markets with dominant hospital systems that have constrained ASC development or acquired physician ASC ownership stakes show more compressed margins.

Recognizing Where Hospital Outpatient Margin Is Going

The profitability story of ASCs is inseparable from the financial stress story of hospital outpatient departments, and the connection is direct rather than coincidental.

When high-margin elective procedures migrate from hospital outpatient departments to freestanding ASCs, hospitals retain their higher-overhead infrastructure while losing the procedure volume that generated the margins that cross-subsidized lower-margin and unprofitable services. A hospital that loses its orthopedic and cataract surgery volume to affiliated ASCs still maintains its emergency department, its labor and delivery unit, its psychiatric services, and its intensive care unit, all of which operate at negative or very thin margins. The financial architecture that supported those services depended partly on the cross-subsidy from high-margin elective procedures.

This dynamic is part of what health economists call the "cream-skimming" concern about ASC growth: if ASCs selectively capture the most profitable patients and procedures while hospital systems bear the financial burden of comprehensive service obligations and uncompensated care, the long-term financial viability of hospitals is undermined in ways that have consequences for the communities they serve.

The JAMA findings add empirical weight to this concern by quantifying the magnitude of the margin differential. If ASC margins are high and growing, the question of who captures that financial value and what it means for healthcare system sustainability deserves serious policy attention.

Diagnosis: Who Owns the Profit and Why It Matters

Ownership of ambulatory surgery centers has been shifting steadily toward corporate consolidation. Three overlapping ownership categories account for most ASC assets in the current market.

Physician-owned ASCs, either solo-physician or physician group-owned, represent the historical foundation of the sector. Physician owners capture both the professional fee for their surgical work and a share of the facility fee, creating strong financial incentives for high-volume procedure performance. These incentives have been criticized in some health policy contexts for encouraging volume rather than value, though physician proponents argue that efficiency and quality are inseparable in ASC settings.

Hospital-affiliated ASCs represent a strategic response by health systems to the migration of procedure volume. By acquiring physician ASC ownership stakes or developing new ASC joint ventures with physician groups, hospitals attempt to retain a share of the margin rather than losing it entirely to independent competitors. The UPMC model, which includes ASC development as part of its integrated care strategy, reflects this approach.

Private equity-backed ASC platforms represent the fastest-growing and most financially motivated ownership category. PE investment in ASCs accelerated dramatically over the past decade as investors recognized the combination of stable procedure volume, favorable payor mix, and strong margin potential. PE platforms typically aggregate multiple ASC locations under centralized management infrastructure, achieving purchasing scale, shared administrative services, and recruiting advantages that individual physician-owned centers cannot match.

Treatment: What Policy Options Could Rebalance the ASC Economy

The JAMA findings support several policy responses that have been discussed in health policy circles for years but have not yet been comprehensively implemented.

Site-neutral payment, which would eliminate or significantly narrow the payment differential between hospital outpatient departments and ASCs for identical procedures, is the most direct policy lever. CMS has taken incremental steps toward site neutrality, but full implementation remains politically contested because hospital systems would face significant revenue losses in the transition period, even though the longer-term goal of reducing unnecessary procedure migration serves patients and payers.

Greater transparency about ASC ownership structures would allow patients to understand when their physician has a financial interest in the facility to which they are being referred, enabling more informed decisions about whether to receive care at an ASC or a hospital outpatient department. Informed consent processes for ASC referrals could be strengthened to require explicit disclosure.

Stronger certificate of need oversight in states that retain CON programs, specifically applied to ASC development in markets where procedure migration is already compromising hospital financial stability, could slow cream-skimming dynamics in the most affected markets.

Prevention: Building a Sustainable Outpatient Surgery Ecosystem

Frequently Asked Questions

Q1: What did the JAMA report find about ambulatory surgery center profitability?

The JAMA report found that ambulatory surgery centers are generating high operating margins, particularly for elective procedure categories such as orthopedic surgery, cataract procedures, and gastrointestinal endoscopy. These margins substantially exceed what hospital outpatient departments typically earn for comparable procedures, partly due to ASC efficiency advantages and partly due to favorable commercial insurance negotiated rates in some markets.

Q2: Why are ambulatory surgery centers more profitable than hospital outpatient departments?

ASCs benefit from purpose-built efficiency for specific procedure categories, a more favorable payor mix weighted toward commercially insured and Medicare patients, lower overhead relative to full-service hospitals, and in some markets, favorable commercial insurance rates that reflect physician group market power. They are also not obligated to maintain the unprofitable service lines that hospitals must operate as part of their community mission.

Q3: Does the migration of surgical volume to ASCs harm hospitals?

The migration of high-margin elective procedures to ASCs reduces the cross-subsidy that those procedures historically provided for lower-margin services at hospitals, including emergency care, behavioral health, and labor and delivery. Over time, if this migration continues without policy adjustment, it creates financial pressure on hospitals that may affect their ability to sustain services that the community depends on but that are not profitable on their own.

Q4: Are ambulatory surgery centers generally safe for patients?

For appropriate procedures in appropriately selected patients, ASCs have safety records comparable to hospital outpatient departments for the procedure types they perform. ASCs are licensed and inspected by state health departments and accreditation bodies. The key safety distinction is that ASCs are not equipped to manage unexpected complications requiring intensive care or extended hospitalization, making patient selection for ASC procedures critically important.

Q5: What is site-neutral payment and why does it matter for ASC economics?

Site-neutral payment refers to the policy of paying the same amount for the same procedure regardless of whether it is performed in a hospital outpatient department or a freestanding ASC. Currently, Medicare pays more for procedures at hospital outpatient departments than at ASCs for many services. Full site neutrality would reduce the financial incentive to concentrate elective procedures at ASCs and would reduce the margin differential that the JAMA report documents.

Resources

1. JAMA Network: Original peer-reviewed research on ambulatory surgery center margins and outpatient surgical economics
2. Medicare Payment Advisory Commission (MedPAC): Annual data on ASC and hospital outpatient department payment rates and site neutrality policy analysis
3. Ambulatory Surgery Center Association (ASCA): Industry data, quality benchmarks, and policy positions on ASC regulation and payment
4. Health Affairs Journal: Peer-reviewed research on physician ownership of ASCs, referral patterns, and payor mix effects
5. Centers for Medicare and Medicaid Services (CMS): Official ASC payment rules, site neutrality rulemaking documents, and quality reporting requirements

Interlinking Keywords

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Last Reviewed By

Dr. Manthan Tripathi, xhealthnetwork Editorial and Medical Advisory Team on October 8, 2026.

Disclaimer

This article is for informational purposes only and does not constitute medical, legal, or financial advice. Patients seeking information about their surgical care options should consult their treating physician and healthcare provider directly.