How Congress Can Help to Reverse Hospital Market Consolidation

Report Health Care Reform

How Congress Can Help to Reverse Hospital Market Consolidation

October 5, 2021 26 min read Download Report
Robert E. Moffit
Senior Research Fellow, Center for Health and Welfare Policy
Moffit specializes in health care and entitlement programs, especially Medicare.


Hospital market consolidation is a problem for every American. The lack of competition in the nation’s hospital markets undermines patient choice and increases consumers’ costs. Conversely, strong market competition not only increases patient choice and controls costs, but also stimulates innovation in health care delivery and improves the quality of care. Consumer-driven market competition can deliver what government bureaucracy cannot: fast, efficient, personalized, and patient-centered care. To realize these goals, federal and state officials alike need only remove costly government barriers and adopt pro-competition policies.

Key Takeaways

America’s hospitals are consolidating rapidly, which means that a small number of hospital systems dominate a large share of the country’s medical providers.

Competition among hospitals is weak, and this has led to higher costs for patients, less choice, and fewer incentives for medical providers to innovate.

The best solution is to allow for more competition by rolling back federal and state government policies that have contributed to the current consolidation.

America’s hospital markets are consolidated, with a relatively small number of hospital systems dominating a large share of the market in any given geographical area. The right remedy for such a concentration of economic power is free-market competition, but competition in this sector of the economy is weak. The absence of strong competition increases consumer costs, decreases consumer choice, weakens provider incentives for innovation, and thus threatens the cost-effective delivery of medical care.

Squeezing the Consumer. The Medicare Payment Advisory Commission, the agency that advises Congress on Medicare reimbursement, reports that hospital consolidation, which affects the delivery of care, has been accompanied in recent years by health insurance market consolidation, which drives the financing and cost of care. The commission notes that “commercially insured patients appear to pay higher prices for insurance in consolidated markets.”REF There also has been a dramatic decline in competition within the nation’s group and individual health insurance markets.REF

Consumers are thus squeezed financially by the continuing increase in health care costs that this dual consolidation in health insurance and hospital markets has brought about. Moreover, “[h]ospital consolidation appears to be a trend that is not easily reversed once started. It may be very difficult to unwind mergers and create more competition in the markets, especially in markets where one system employs most physicians and controls most hospital beds.”REF

Partial Remedies. Under current law, federal officials have two partial remedies that they can apply to hospital markets that are not competitive.

  • The Federal Trade Commission (FTC) monitors anticompetitive business practices, studies the negative impact of market consolidation, and (along with the Department of Justice) enforces federal antitrust laws. While some suggest that there is a need for stepped-up FTC oversight of the nation’s hospital markets,REF this would be at best only a partial remedy inasmuch as government laws, rules, and regulations have increased consolidation and reduced competition.
  • The Trump Administration’s hospital price transparency reforms, enabling consumers to compare prices for common medical procedures, took effect on January 1, 2021. However, many hospitals have not complied, and wide variations in pricing for common hospital procedures continue to hurt the uninsured while leaving patients without full ability to comparison shop for common hospital procedures.

A More Effective Approach. As noted, these are only partial remedies. More significant steps are needed to reverse the trend toward hospital consolidation and promote competition in the nation’s health care markets. For example, Congress should:

  • Encourage state officials to review, reform, or repeal certificate of need laws. The overwhelming evidence in the professional literature demonstrates that these laws act as barriers to competition, protect the financial interests of existing hospitals and medical facilities, and neither control costs nor improve the quality of care. In fact, these anticompetitive measures increase patient costs as well as taxpayer costs. Because higher state health costs generate higher federal health subsidies, Congress could adjust federal health care grants, payments, or subsidies to the states and provide some relief to federal taxpayers who are currently funding the additional costs imposed on them by these state-generated anticompetitive laws and regulations.
  • Include site neutrality in Medicare payment. Whether a medical service is delivered in a physician’s office, a clinic, or a hospital setting, the Medicare payment for that service should be the same. President Donald Trump issued a rule to accomplish this on a limited basis.REF Congress should codify it and expand its application. Such a policy would level the playing field among providers and remove the financial disabilities for medical professionals who would compete with hospital systems.
  • Repeal the ACA restrictions on Medicare payment to physician-owned hospitals and specialty hospitals. The current restrictions do little more than serve the special interests of large hospital systems and undercut consumer choice of high quality, specialty care.

The Growth of Consolidated Markets

Today, most Americans are compelled to secure medical care in uncompetitive hospital markets. In any given state, patients might have access to many hospitals, but many of these hospitals are owned and operated by a few hospital corporations. According to a major 2016 study by the Health Care Cost Institute, 72 percent of 112 American metropolitan areas studied had highly concentrated hospital markets.REF More recently, the Medicare Payment Advisory Commission reported that “[b]y 2017, in most markets, a single hospital system had more than a 50 percent market share of discharges.”REF Using its own metrics, the FTC concluded that by 2017, 90 percent of the nation’s hospital markets were “highly concentrated.”REF

Hospital consolidation has accelerated since the enactment of the Affordable Care Act (ACA) of 2010.REF Between 1998 and 2017, there were 1,577 hospital mergers. Of that number, 456 occurred between 2013 and 2017, and another 90 were announced in 2018.REF Though most consolidation took place before 2000, largely through mergers and acquisitions, the pace of consolidation accelerated after enactment of the ACA. Touted as a measure that would introduce more robust competition into the health care markets, President Barack Obama’s national health law in fact did not improve competition in the hospital markets.REF

Moreover, hospital consolidation has been accompanied by hospital acquisition of independent medical practices: a large shift from independent physician practice to consolidated hospital-based medical practice. The Medicare Payment Advisory Commission found between 2003 and 2011, hospital employment of physicians increased by 55 percent.REF From 2010 to 2016, according to Brent Fulton, an assistant adjunct professor in the University of California, Berkeley, School of Public Health, the share of primary care physicians alone working for hospital-based organizations or medical practices “increased from 28 to 44 percent—a dramatic increase of 57 percent.”REF By 2020, according to the American Medical Association, self-employed doctors accounted for only 44 percent of all “patient care” physicians in the United States.REF

The Continuing Costs of Consolidation

Hospital market consolidation has been accelerating over the past three decades, and some industry analysts suggest that it has positive implications. This pattern is sometimes rationalized as a way to achieve the efficiencies of economies of scale, a normal outgrowth in the evolution of America’s large and complex system of public and private health care financing and delivery.REF It is sometimes argued that mergers and acquisitions and the centralization and integration of the delivery system that accompany them will secure greater efficiency of care delivery, reduce wasteful “excess capacity” in hospital systems, and improve the quality of medical care. Within consolidated markets, it is asserted, hospital executives can also secure better “leverage” in negotiations with doctors and other medical professionals.REF

Medicare Payment Policy. Although a variety of independent factors have contributed to this consolidation, Medicare payment policy has played a powerful role. As the Medicare Payment Advisory Commission reports:

[W]hen hospitals acquire physician practices, Medicare payments increase due to facility fees that Medicare pays for physicians' services when they are integrated into a hospital’s outpatient department. The potential for facility fees from Medicare and higher commercial prices encourages hospitals to acquire physician practices and have physicians become hospital employees.REF

Medicare accountable care organizations (ACOs) are also contributing to this costly consolidation.REF

Consumer Costs. As consolidation has grown, consumer costs have increased. According to Carnegie Mellon University Professor of Economics Martin Gaynor:

Extensive research evidence shows that consolidation between close competitors leads to substantial price increases for hospitals, insurers, and physicians, without offsetting gains in improved quality or efficiency. Further, recent evidence shows that mergers between hospitals not in the same geographic area can also lead to increases in price.REF

In their own review of the professional literature, members of the Medicare Payment Advisory Commission similarly concluded that “[t]he effect of consolidation on prices varies from study to study and market to market, but most studies find consolidation leads to higher commercial prices.”REF When hospitals secure physician practices, physicians charge hospital facility fees in addition to their own fees, which leads in turn to higher Medicare payment for hospital-owned practices than for independent medical practices. Thus, “[w]hen a physician practice integrates with a hospital outpatient department, both commercial prices and Medicare prices (defined…as physician payment plus facility fees) increase.”REF

There is also little or no evidence that hospital consolidation improves the quality of medical care. This is true whether the quality measurement is a process measure, metrics on medical outcomes, mortality, or patient experiences. In a major study of hospital consolidation published in The New England Journal of Medicine, researchers concluded that “[h]ospital acquisition by another hospital or hospital system was associated with modestly worse patient experiences and no significant changes in readmission or mortality rates. Effects on process measures of quality were inconclusive.”REF

To secure higher quality of care at lower costs, policymakers should embrace a pro-competition policy. “Competition in health care markets benefits consumers,” according to the FTC, “because it helps contain costs, improve quality, and encourage innovation.”REF Independent research in the professional literature routinely bears out this assessment. Writing in the New England Journal of Medicine, for example, researchers affirm that “[p]revious studies have generally shown that hospitalized patients have better outcomes in more competitive hospital markets than less competitive markets.”REF

In short, the more competitive the markets, the higher the quality of care and the lower the price of that care.REF

How Congress Can Promote Competition in Hospital Markets

  1. Encourage states to review, roll back, or repeal certificate of need laws. Thirty-five states and the District of Columbia have enacted certificate of need (CON) laws. Though varied in scope, virtually all of these laws require hospital executives, doctors, and other medical professionals to secure a certificate of need from a state government agency for permission to build new facilities or to expand or modify existing facilities. The theoretical assumption underlying these laws is that in health care, unlike other sectors of the economy, supply drives demand. Without an external restraint on supply, there will be an excess of supply, which in turn will generate an excess of demand, and the health care system will experience an increase in unnecessary costs.REF Certificate of need laws that require permission for construction or expansion of medical facilities would provide the necessary restraint.

    However valid this theory might have been in the 1970s when states started to enact these laws, it is outdated in the 21st century—a view that is shared by liberal and conservative analysts alike. Conservative analysts note that states with certificate of need laws have “overall health care costs” that are 11 percent higher than those of non-CON states.REF James Baily of the Mercatus Institute at George Mason University notes that the demand for health services is inelastic and that certificate of need laws do not reduce spending “for any major type of provider” but may “increase spending on some types of health care.”REF Writing in the Journal of Health Care Finance, researchers also conclude that these laws have no significant effect on containing hospital costs and may even increase those costs.REF

    In perhaps the best summary of the professional literature on the subject, Brookings Institution scholars conclude that “CON laws end up protecting existing firms and erecting barriers to entry for new firms or existing firms entering new markets. Research has shown these regulations harm competition, leading to higher costs without improving quality, contrary to proponents’ claims.”REF Their recommendation: “States that have CON regulations on the books [should] eliminate them. In some cases, these laws can be allowed to sunset. In others, repeal will be required.”REF

    Not surprisingly, the U.S. Department of Justice and the Federal Trade Commission, both of which are responsible for enforcing antitrust laws, have declared that state certificate of need laws are anticompetitive:

    First, CON laws create barriers to entry and expansion, limit consumer choice, and stifle innovation. Second, incumbent firms seeking to thwart or delay entry or expansion by new or existing competitors may use CON laws to achieve that end. Third…CON laws can deny consumers the benefit of an effective remedy following the consummation of an anticompetitive merger. Finally, the evidence to date does not suggest that CON laws have generally succeeded in controlling costs or improving quality.REF

    Even though certificate of need laws are within the jurisdiction of the states, as noted, the states that maintain them nonetheless impose a burden on federal taxpayers that is proportionately heavier than the burden imposed by states that do not maintain such laws. This is particularly true of the ACA’s federal health insurance subsidies that automatically offset any increase in the cost of exchange coverage. The higher the state’s health costs, including premium and insurance costs, the more taxpayers are required to fund ever larger federal subsidies.

    Congress should require federal actuaries to review these laws and quantify their specific impact on different states. Based on that review and analysis, Congress should also consider making a proportional adjustment in such categories as Medicare hospital payments or federal insurance subsidies to offset the additional costs that these states impose on federal taxpayers. Within the context of future health reform, Congress should likewise make a proportional adjustment in any future federal insurance subsidies to offset the additional costs to federal taxpayers.REF

  2. Include site neutrality in Medicare payment. The $926 billion Medicare program, which covers more than 62 million senior and disabled citizens, is the nation’s largest payer for health care benefits and medical services. Given its sheer size, the program has a profound influence on patterns of medical practice in the private health care markets. Thus, a change in Medicare payment would be a significant step in reversing the current consolidation of care delivery in the hospital markets. Specifically, Congress could enact site neutrality—paying the same Medicare rate for medical treatments and procedures whether they are provided in an inpatient or outpatient setting or in a hospital, clinic, or doctor’s office—in Medicare payment.

    The Trump Proposal. In his fiscal year 2021 budget submission, former President Donald Trump offered several proposals for site neutrality payments, including payment for hospital outpatient medical procedures at the same rate as payment for such services when they are provided in a physician’s office.REF The Trump policy was subsequently embodied in a Centers for Medicare and Medicaid Services (CMS) rule applying Medicare site neutrality to outpatient procedures, and the U.S. Supreme Court dismissed a major legal challenge to the rule.REF The Health Policy Consensus Group recommends that:

    Medicare should pay the same for services provided in a hospital-based setting as it does for the same service provided in a physician’s office or an ambulatory surgical setting…. While providers in different settings may choose to charge different prices for the same service, taxpayers should not be forced to pay more for the same procedure based on the site of care. Providers should face equal incentives to use taxpayer money most efficiently. Congress should start by codifying the [Trump] Administration’s initial efforts to require Medicare payments to be site neutral and go beyond it to ensure that Medicare is reimbursing the same amount for a service regardless of the setting in which it is provided.REF

    Once again, the principle of site neutrality in Medicare payment has garnered wide support among liberal and conservative analysts alike. As noted by Emily Gee, senior health economist at the Center for American Progress, the status quo means that taxpayers are paying more than they should for medical services that could be performed in non-hospital settings. “[T]he differential between hospital and nonhospital rates financially incentivizes hospital systems to acquire physician practices,” according to Gee, “thereby leading to greater consolidation among providers. Medicare payments for procedures that can be safely performed in nonhospital settings such as ambulatory surgery centers or physician offices should not stack the deck in favor of hospitals.”REF Though generally opposed to President Trump’s health policy agenda, Brookings Institution scholars nonetheless judged the former President’s Medicare site neutrality initiative to be a “sensible” proposal.REF

    Such a change in Medicare payment policy would have a big spillover effect by levelling the playing field of competition in service delivery between hospital systems and alternative care delivery centers, such as independent clinics and independent medical practices. It would also encourage private health insurers and state employee insurance agencies to adopt provider payment policies that mirror federal Medicare practices. The result would be to stimulate innovation in care delivery and improve the cost and efficiency of care for patients on the ground.

  3. Repeal the ACA restrictions on Medicare payment to physician-owned hospitals and specialty hospitals. Under Section 6001 of the ACA, Congress prohibited new physician-owned hospitals, mostly specialty hospitals, from participating in Medicare or Medicaid, thus cutting off vital revenue for the treatment of beneficiaries of these two giant federal entitlement programs.REF While pre-ACA physician-owned hospitals secured a “grandfather” status under the law, these hospitals were henceforth allowed only limited expansions under specified conditions.REF

    CMS Study. The debate over physician-owned specialty hospitals is not new. Pursuant to the passage of the Medicare Modernization Act of 2003, Congress authorized the CMS to conduct a study of several key issues, including “cherry picking” of patients by specialty hospitals, quality of care delivery, patient satisfaction, and provision of uncompensated care. In the case of cardiac specialty hospitals, for example, the CMS concluded that “the notion that specialty cardiac hospitals are transferring more severely ill patients to general hospitals was not supported by our study,” that “cardiac hospitals delivered high quality of care that was as good as or better than their competitor hospitals,” and that “[p]atient satisfaction was very high in both cardiac and orthopedic surgery hospitals.”REF Concerning hospital revenues devoted to uncompensated care, the CMS noted that unlike physician-owned specialty hospitals, the general, nonprofit community hospitals do not pay real estate, property, income, or sales taxes: “As a result, the total proportion of net revenue that specialty hospitals devoted to uncompensated care and taxes combined exceeded the proportion of net revenues that community hospitals devoted to uncompensated care.”REF

    Since that major CMS study, independent analyses have largely refuted the criticisms of these hospitals and confirmed their positive contributions. In a 2015 study of 2,186 acute care hospitals, researchers writing in the British Medical Journal concluded that “POHs may treat slightly healthier patients, but do not systematically avoid patients with Medicaid and those from ethnic minority groups, and that overall costs of care, payments for care, and quality of care are similar between POHs and non-POHs.”REF In a 2016 study examining the performance of 3,089 hospitals, researchers writing in the Journal of the American College of Surgery concluded that physician-owned surgical hospitals scored “significantly higher” on CMS performance metrics compared to other hospitals in the study.REF That year, the Physician Hospitals of America (PHA), a trade association of physician-owned hospitals, reported that in the CMS ”Quality Star Rating System,” 52 percent of the eligible physician-owned hospitals received a rating of four or five stars compared to just 27 percent of other hospitals.REF

    In a comprehensive review of the professional literature on the subject, researchers writing for the Mercatus Center at George Mason University recently confirmed previous positive assessments of the performance of physician-owned hospitals. “Our systematic review found that specialty POHs generally provide higher quality care at a lower or comparable cost than do non-POHs,” the authors conclude. “Although the available evidence on general or community hospital POHs is generally more equivocal, it suggests that POHs are not higher cost or lower quality than non-POHs.”REF

    Despite this continuing record of stellar performance, the ACA restrictions remain on the books. The national health law severely damaged this sector of the hospital industry and blocked the emergence of these hospitals as an independent competitive force in America’s health care delivery system.REF According to PHA, “37 physician-owned hospitals were not built because of the [ACA] ban, 40 nearly finished construction projects were prevented, and 20 major expansion projects were canceled.”REF

    It is past time for Congress to reverse course. Increasing specialization can be powerfully productive. As Harvard Business School Professor of Business Management Regina Herzlinger has argued, specialty hospitals—operating as “focused factories”—hold great promise in offering high-quality and cost-effective care.REF This applies especially to physician-owned hospitals that specialize in cardiac, cancer, or orthopedic care. A high volume of specialized care can secure higher-quality care and better medical outcomes and at less cost. Congress should lift the ACA ban and let these hospitals compete.


Hospital market consolidation is a problem for every American. The lack of competition in the nation’s hospital markets undermines patient choice and increases consumers’ costs. Conversely, strong market competition not only increases patient choice and controls costs, but also stimulates innovation in health care delivery and improves the quality of care.

Government policy at the federal and state levels has contributed to the current consolidation of America’s hospital markets. At the state level, certificate of need laws have served as barriers to entry and broader competition and have failed in their ostensible mission to control costs or improve the quality of care delivered to state residents.

The ACA has blocked the emergence of physician-owned hospitals to compete with general hospitals, even though the preponderance of the professional literature shows that these hospitals deliver high-quality, specialized care at competitive prices. Likewise, Medicare payment is higher for medical services delivered in hospitals than in other settings and thus tilts the field of competition in favor of large hospital systems. Congress can change the ACA and Medicare payment problems directly and indirectly can encourage state officials to repeal outdated certificate of need laws.

Consumer-driven market competition can deliver what government bureaucracy cannot: fast, efficient, personalized, and patient-centered care. To realize these goals, federal and state officials need only remove costly government barriers and adopt pro-competition policies.

Robert E. Moffit, PhD, is a Senior Fellow in Domestic Policy Studies, of the Institute for Family, Community, and Opportunity, at The Heritage Foundation.


Robert E. Moffit
Robert Moffit

Senior Research Fellow, Center for Health and Welfare Policy