Your Health Care Bill May Depend on Your Zip Code, New Study Finds

WASHINGTON, April 9, 2026 – The cost of health care in America can more than double depending on your zip code, with the price tag for services—not the amount of care received—being the primary culprit behind the staggering disparities. A landmark analysis released today by the Health Care Cost Institute (HCCI) reveals that a person’s medical bills are shaped more by local market dynamics than by their personal health needs.

The new findings, part of HCCI's updated Health Cost Landscape platform, draw from a massive dataset of over 1.3 billion medical claims for 38 million Americans with employer-sponsored insurance between 2018 and 2022. The data paints a stark picture of a fragmented system where residents of Charleston, West Virginia, face annual health care spending more than twice as high as those in Bakersfield, California, one of the nation's lowest-spending areas.

"In many communities, consumers aren't using more care – they're just paying far more for it," said Katie Martin, HCCI President and CEO, in a statement accompanying the release. "Our new Health Cost Landscape shows just how much local market structures, especially highly concentrated hospital systems, shape prices."

The Price Isn't Right: Why Costs Vary So Wildly

The core of HCCI's findings challenges a common assumption that higher spending is linked to sicker populations or greater use of medical services. Instead, the research pinpoints pricing as the key driver. Two communities can have similar rates of doctor visits, procedures, and prescriptions, but one will have vastly higher total spending simply because the prices charged by local providers are higher.

According to the analysis, spending on hospital outpatient services is the single strongest indicator of whether a metropolitan area is a high-cost market. This suggests that services performed in hospital-affiliated clinics and facilities—from diagnostic imaging to minor surgical procedures—are a major source of the price variation across the country. This finding aligns with other research showing a persistent trend of care shifting from independent physician offices to more expensive hospital outpatient departments.

This price-driven disparity has profound implications for families and employers. It means that a company with offices in different cities could pay dramatically different amounts to provide the same health plan to its employees, not because of differences in employee health, but because of the negotiating power of local hospital systems.

A Market Squeeze: The Impact of Hospital Concentration

A primary factor fueling these high prices, according to HCCI and other independent researchers, is a lack of competition. The report found that a staggering 88% of the 269 metro hospital markets studied are either highly or very highly concentrated. In these markets, a small number of large hospital systems dominate, leaving patients and insurers with few, if any, alternative choices for care.

When a single health system controls the majority of hospitals and outpatient facilities in a region, it gains immense leverage to demand higher prices from insurance companies. These costs are then passed on to employers and employees through higher premiums, deductibles, and copayments. Research from the Kaiser Family Foundation (KFF) supports this, showing that in 2024, nearly half of U.S. metropolitan areas had their entire inpatient hospital market controlled by just one or two health systems.

Studies by the RAND Corporation have repeatedly confirmed this link, finding that prices paid by private health plans are, on average, 2.5 times higher than what Medicare pays for the same services, with much of that variation explained by a hospital's market power. While hospital systems often justify consolidation by promising greater efficiency and improved quality, multiple analyses have shown that these mergers frequently lead to higher prices for consumers without a corresponding improvement in patient outcomes.

The Burden on Wallets and Workplaces

To quantify the real-world impact on residents, HCCI introduced a new Cost Burden Index, which measures average per-person health care spending against average local income. The results are sobering: more than half of the metro areas studied have a high health care cost burden, defined as spending that consumes over 7% of personal income. This demonstrates that even in areas with seemingly lower overall costs, health care can be profoundly unaffordable when viewed in the context of local wages.

This financial pressure is acutely felt by employers, who are the primary source of health coverage for over 150 million Americans. According to a recent survey by the Business Group on Health, employers are bracing for a median 9% increase in health care costs in 2026, a figure that far outpaces inflation and wage growth. This relentless cost growth forces businesses to make difficult choices, from scaling back benefits and increasing employee cost-sharing to slowing hiring or suppressing wages.

A Call for Solutions and Transparency

The HCCI report underscores a growing consensus among policymakers and economists that tackling America's health care cost crisis requires a focus on local market failures. "If employers and policymakers want to make care more affordable, they need solutions tailored to local price and market realities," Martin noted.

Policy experts from institutions like the Brookings Institute have called for stronger federal and state antitrust enforcement to challenge anti-competitive hospital mergers. At the same time, consumer advocacy groups like Families USA are pushing for greater price transparency, arguing that forcing hospitals to disclose their negotiated rates can empower employers and consumers and foster competition. They advocate for policies like "same service, same price," which would prevent large health systems from charging more for a service simply because it is performed in a hospital-owned facility rather than a doctor's office.

These calls are beginning to translate into action. In late 2023, the Department of Justice, the Federal Trade Commission, and the Department of Health and Human Services launched a joint effort to promote competition in health care markets. Meanwhile, states are not waiting for federal intervention. Indiana, for example, recently passed legislation aimed at curbing high hospital prices by banning certain facility fees and imposing new fiduciary duties on insurance plan administrators. The new data from HCCI provides critical ammunition for these efforts, offering a detailed, local-level roadmap of where the problems are most severe and where intervention is needed most.