The long-standing symbiotic relationship between American hospitals and Medicare Advantage (MA) plans is undergoing a fundamental and potentially permanent fracture. For nearly two decades, the "bargain" was clear: health systems would offer modest discounts and prioritize patient volume in exchange for the steady, predictable influx of seniors enrolled in private insurance alternatives to traditional Medicare. However, that partnership model has deteriorated into a state of high-friction litigation, administrative gridlock, and financial insolvency for many providers. According to Michael Kopko, CEO of Pearl Health, the industry is witnessing a "reconsideration" of the entire Medicare Advantage value proposition as hospitals realize the promised volume no longer offsets the cost of care delivery.
The core of the issue, as Kopko describes it, is a significant devaluation of the reimbursement dollar. In the current climate, health systems report that for every dollar of care provided under Medicare Advantage, they effectively receive only 85 cents after accounting for denials, administrative overhead, and delayed payments. This "15-cent gap" has become an unsustainable burden for systems already grappling with post-pandemic labor costs and inflationary pressures.
The Rising Wall of Denials: A Five-Year Statistical Shift
The primary catalyst for the current exodus of health systems from Medicare Advantage networks is the sharp escalation in claim denials. Data indicates that over the past five years, initial denial rates for MA plans have climbed from a manageable 7% to 8% range to upwards of 12%. While a 4% to 5% increase may seem incremental to a layperson, for a large health system operating on thin margins, it represents millions of dollars in trapped or lost revenue.
The administrative "throttling" of bills has transformed the billing department from a back-office function into a primary battleground for health system survival. In traditional Medicare, reimbursement is largely automated and predictable, following established fee-for-service schedules with minimal prior authorization requirements. In contrast, Medicare Advantage plans—managed by private insurers like UnitedHealthcare, Humana, and Aetna—frequently utilize complex prior authorization protocols and AI-driven clinical review tools to manage utilization.
Kopko notes that this shift has been particularly jarring for systems accustomed to the speed of the federal government’s direct payment system. When a significant portion of a hospital’s revenue is tied up in appeals processes that can last months, the "volume" promised by MA plans becomes a liability rather than an asset. This realization has led to a landmark year for contract terminations.
Chronology of a Crisis: The 2023-2024 Tipping Point
The tension between providers and payers has been simmering for years, but 2023 and 2024 marked a definitive turning point. The timeline of this "decoupling" highlights a growing trend of major regional and national players opting out of the private Medicare market.
In late 2023, several high-profile systems began signaling their intent to drop Medicare Advantage plans. San Diego-based Scripps Health announced it would no longer accept MA plans for its integrated medical groups, affecting over 30,000 seniors. This was followed by similar moves from rural and mid-sized systems, such as Brookings Health System in South Dakota and Stillwater Medical Center in Oklahoma, citing the administrative burden and low reimbursement rates.
By mid-2024, the movement reached the upper echelon of American medicine. To date, 30 major health systems have either dropped at least one major Medicare Advantage plan or announced plans to do so by the 2025-2026 contract cycle. This list includes prestigious institutions such as:
- The Mayo Clinic: Known for its highly specialized care, Mayo has pushed back against the restrictive networks and authorization delays inherent in many MA plans.
- Mount Sinai Health System: A cornerstone of New York City healthcare, which has cited the need for more sustainable reimbursement models.
- UNC Health and Lehigh Valley Health Network: Systems that serve diverse populations and have found the MA model increasingly incompatible with their operational costs.
- University of Miami Health System: Highlighting the geographic spread of the trend into high-density senior markets like Florida.
This exodus is not a mere negotiating tactic. Rather than using the threat of termination to squeeze an extra percentage point out of insurers, these systems are fundamentally reorienting their patient populations toward traditional Medicare.
The Strategic Pivot to Traditional Medicare
The move away from Medicare Advantage represents a calculated financial trade-off. By dropping MA contracts, hospitals are voluntarily giving up a slice of their patient volume. However, they are gaining what Kopko calls "reliability."
In the traditional Medicare model, providers receive 100% of the Medicare-allowable rate with almost immediate payment. There is no middleman private insurer looking to extract a profit margin between the federal payout and the provider’s check. For many CEOs, receiving 100% of a smaller volume of patients is more fiscally sound than receiving 85% (after denials) of a larger volume.
Providers are increasingly redirecting their patients toward original Medicare during open enrollment periods. By educating seniors on the differences in access—specifically the lack of prior authorization hurdles and the broader choice of doctors in the traditional system—hospitals are successfully shifting their "payer mix" back to the federal program. This strategy allows systems to "play their cards right" and secure a higher return on reimbursement without the administrative friction that characterizes the MA landscape.
The Supplemental Benefit "Flywheel" and the Healthy Senior Trap
A significant part of Medicare Advantage’s meteoric rise over the last decade—now accounting for over 50% of all Medicare beneficiaries—is what Kopko describes as a "flywheel" of supplemental benefits. Private plans attract healthy, newly eligible 65-year-olds with "lifestyle" perks that traditional Medicare does not offer:
- Free gym memberships (e.g., SilverSneakers)
- Zero-dollar monthly premiums
- Over-the-counter (OTC) drug allowances
- Vision, dental, and hearing coverage
These benefits are highly effective at recruiting "low-utilization" seniors—those who are relatively healthy and do not yet require expensive hospitalizations or complex surgeries. For these enrollees, the Medicare Advantage model works well.
However, the appeal of the MA model often evaporates when a patient’s health declines. As beneficiaries age and develop chronic conditions or require acute care, they encounter the "network restrictions" and "care denials" that define the private insurance experience. It is at this juncture—when the patient needs the hospital the most—that the conflict between the insurer’s profit motive and the hospital’s care delivery becomes most acute.
Efficiency and the Myth of the Private Sector Advantage
The current crisis has prompted a broader reckoning regarding the efficiency of the Medicare Advantage model. Historically, policymakers assumed that private insurers would be more efficient than the federal government at managing healthcare costs through competition and innovation. Kopko challenges this assumption, noting that Medicare Advantage does not clearly outperform the traditional model in several key metrics.
"It doesn’t really beat them on cost. It doesn’t necessarily beat them on efficiency. It doesn’t beat them on provider satisfaction," Kopko remarked.
In fact, traditional Medicare benefits from a "scale advantage" that no individual private plan can replicate. Because the federal government runs the program directly, the administrative overhead is significantly lower than that of hundreds of separate private payers, each with its own executive salaries, marketing budgets, and shareholder profit requirements. When a private insurer must take a 10% to 15% margin off the top of the federal payment, that money is necessarily diverted away from patient care or provider reimbursement.
Furthermore, recent studies by the Medicare Payment Advisory Commission (MedPAC) have suggested that the government actually pays more per capita for beneficiaries in Medicare Advantage than it does for those in traditional Medicare, largely due to "coding intensity"—a practice where insurers document more illnesses for patients to trigger higher risk-adjusted payments from the government.
Future Implications: Toward 2050
The pressure on the Medicare Advantage model is expected to intensify as the U.S. population ages. By 2050, the number of Medicare beneficiaries is projected to reach 80 million. If the current trend of hospital exits continues, the value proposition of Medicare Advantage will be severely diminished. An insurance plan is only as good as the hospitals and doctors that accept it; if the nation’s top-tier health systems are no longer in-network, MA plans will become "second-tier" products.
There is also the looming threat of federal intervention. If the Centers for Medicare & Medicaid Services (CMS) continues to tighten reimbursement rates for MA plans to protect the solvency of the Medicare Trust Fund, insurers will likely respond by increasing denial rates even further to maintain profitability. This would, in turn, accelerate the exodus of providers.
The ultimate resolution of this conflict may require a total legislative overhaul of how private plans interact with the Medicare program. This could include stricter regulations on prior authorizations—some of which CMS has already begun to implement with the 2024 Final Rule—and a reevaluation of how supplemental benefits are funded.
For now, the healthcare industry is watching a high-stakes game of chicken. Health systems are betting that they can survive on the lower volume of traditional Medicare if it means more reliable cash flow. Insurers are betting that their "flywheel" of benefits will keep enrollees coming, regardless of which hospitals are in their networks. As Michael Kopko suggests, the future of the American senior healthcare system depends on whether the model can be reformed to serve the sickest patients, rather than just the healthiest ones. Until then, the "Great Decoupling" is likely to continue, one hospital contract at a time.
