Hospital Competition Shrinks Across U.S. Cities
Hospital consolidation is tightening its grip on urban America, leaving patients in nearly half of metropolitan areas with only one or two health systems for inpatient care—a shift with direct implications for prices, employer health costs and regulators’ antitrust agenda.
In a March market analysis, KFF said 47% of metro areas in 2024 had just one or two hospital systems. Nearly 80% of metropolitan hospital markets either became less competitive from 2015 to 2024 or remained dominated by a single system throughout that period.
The findings underscore how deeply provider concentration now shapes the U.S. healthcare economy. KFF’s review of metropolitan statistical areas shows a decade-long erosion in inpatient competition, even as policymakers in Washington and several states step up scrutiny of healthcare mergers.
Antitrust Pressure and the Price Consequences
Regulators have long warned that consolidation carries costs. The Federal Trade Commission has said hospital mergers can “increase prices, reduce quality, and inhibit innovation,” a position it has reiterated in enforcement actions and policy statements.
The Congressional Budget Office has similarly found that consolidation tends to raise commercial prices, with uncertain quality gains. Economists at the Health Care Cost Institute and in peer-reviewed research have reached comparable conclusions.
Zack Cooper, a health economist at Yale University, wrote in research published by the National Bureau of Economic Research that hospital mergers “lead to substantial increases in the price of hospital care,” a finding that has become central to antitrust debates.
Federal regulators have stepped up enforcement. Lina Khan said during her tenure that healthcare consolidation “has been a key driver of rising healthcare costs,” and the FTC has challenged several hospital deals in recent years. In one closely watched case, the agency moved against the proposed merger of Novant Health and Community Health Systems-owned hospitals in North Carolina, arguing the deal would reduce competition for inpatient services.
Industry Response and the Cost Burden on Employers
Hospital groups argue scale is necessary to navigate rising costs. The American Hospital Association says systems face “significant financial headwinds,” including labor costs, inflation and weak reimbursement from public programs, and that consolidation can preserve access to care rather than simply raise prices.
Even so, much of the evidence cited by regulators and policy researchers points in one direction: when markets narrow to a handful of dominant systems, commercial rates tend to rise faster than inflation.
That pressure extends beyond hospital walls. KFF has documented steady increases in employer-sponsored family coverage costs, and economists widely cite provider market power as a key structural driver.
Peterson-KFF Health System Tracker researchers have found that consolidation strengthens providers’ leverage in negotiations with insurers, feeding into premiums and out-of-pocket costs. For employers, that translates into higher benefit spending; for workers, it can mean narrower networks or higher payroll deductions.
Policy Drivers: The ACA’s Role in Consolidation
The Affordable Care Act reshaped the competitive landscape in ways many researchers say accelerated consolidation. While the law expanded coverage and introduced quality reforms, it also created structural incentives for hospitals to scale or affiliate.
New reporting, documentation and quality-measurement requirements increased administrative complexity. Hospitals were required to meet expanded electronic health record mandates under the HITECH Act, alongside value-based purchasing rules, readmission penalties and other federal programs. Smaller and rural systems often struggled to absorb those costs without the scale of larger networks.
The law also promoted Accountable Care Organizations, or ACOs, designed to coordinate care and share financial risk. In practice, larger systems often held an advantage, given their capital, data infrastructure and physician networks. Independent providers frequently joined ACOs led by dominant systems rather than building their own, further concentrating referral patterns.
Researchers have pointed to similar dynamics in physician markets. Quality reporting programs—such as the Physician Quality Reporting System, later incorporated into the Merit-based Incentive Payment System under MACRA—added compliance burdens that encouraged hospital acquisition of physician practices, reducing the number of independent competitors.
Geographic Disparities and the Path Ahead
The effects of consolidation vary by region. KFF found metropolitan markets broadly less competitive, though outcomes differ depending on whether a single nonprofit system, academic network or multistate chain dominates local capacity.
The Medicare Payment Advisory Commission has warned that concentrated markets can limit insurers’ ability to steer patients to lower-cost providers, particularly when systems control hospitals, outpatient facilities and physician practices under one umbrella.
For investors and insurers, the trend suggests healthcare cost pressures may persist even if other drivers, such as drug spending, moderate. UnitedHealth Group, CVS Health and peers have cited provider pricing as a key variable in medical cost trends.
Regulators are signaling tougher oversight. The Department of Justice and FTC have both indicated stricter review of healthcare transactions, while several states have expanded cost-growth monitoring and pre-merger notice requirements.
Whether that slows consolidation remains unclear. What is clear is the direction of travel: as KFF’s data show, many urban patients already face limited choice—and the decisions made by regulators, courts and hospital systems will shape not only merger activity, but the trajectory of employer premiums and household medical costs for years to come.
