Lee Health, the largest hospital and physician network in Southwest Florida, is ending every contract it holds with UnitedHealthcare on December 31, 2026, according to a notice the health system posted directly on its own website. The termination covers Lee Health’s hospitals and physician practices across Lee County and cuts off in-network access for UnitedHealthcare’s employer-based, individual, and Medicare Advantage members starting January 1, 2027. Medicare Advantage enrollees carry the most exposure, because switching plans outside Medicare’s open enrollment period is not automatic. Medigap holders keep their access regardless, since Medicare Supplement coverage was never tied to Lee Health’s network status in the first place.
Two Contracts, Every Location, One December Deadline
The termination ends both of Lee Health’s participation agreements with UnitedHealthcare: the hospital contract and the separate medical group contract covering its physician practices. The change applies to every Lee Health hospital and physician location in Lee County, not a single facility or specialty line. UnitedHealthcare’s Exchange and Marketplace plans were already outside Lee Health’s network before this announcement, so the new termination adds employer-based, individual, and Medicare Advantage coverage to the list of plan types shut out starting New Year’s Day.
Lee Health’s own notice states that the system is ending its hospital and physician contracts with UnitedHealthcare, effective December 31, 2026, after what its FAQ calls years of challenges that it believes affect patients and its ability to serve the community. The notice adds that Lee Health does not currently see a path forward to restoring the relationship. That language, paired with the scope of the termination — every hospital, every physician group, three separate insurance categories — points to a system-wide breakdown rather than a routine rate dispute that typically gets resolved before a contract lapses.
Patients with appointments scheduled through the end of 2026 do not need to change anything; Lee Health remains in-network for UnitedHealthcare commercial and Medicare Advantage members through December 31. The bigger question is what happens to care scheduled for 2027. Lee Health is telling patients not to cancel those appointments before checking whether UnitedHealthcare’s continuity-of-care process, or a legal exception, lets them keep an in-network rate temporarily — an option that exists but requires a direct call to the insurer, not an automatic extension.
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The Medicare Advantage Exit Ramp Is Discretionary, Not Guaranteed
Medicare Advantage members who want to keep seeing Lee Health providers after January 1 have two realistic paths: wait for the Annual Enrollment Period that runs October 15 through December 7, 2026, and switch plans before the deadline, or seek a special enrollment period tied to what Medicare calls a significant network change. Federal rules let the Centers for Medicare & Medicaid Services grant a two-month window to switch plans or return to Original Medicare when a network loss is judged significant enough, according to Medicare’s own special enrollment period guidance. The catch is that CMS decides case by case.
That case-by-case standard is not new, and it recently got weaker rather than stronger. In a proposed rule issued in November 2025, CMS floated removing the significant-change requirement entirely so plans would automatically owe enrollees a switching window whenever a network changed, without waiting for a determination that has never had a fixed definition. The agency dropped that proposal, according to the Center for Medicare Advocacy, leaving the same undefined, discretionary standard in place. A hospital system the size of Lee Health leaving a plan’s network is a strong candidate for that designation, but nothing guarantees CMS will make the call before January 1.
Lee Health’s FAQ acknowledges its own limits here: it tells patients directly that it cannot assist them with evaluating or choosing a health plan, and directs Medicare Advantage members instead to Medicare’s plan-comparison tool or to 1-800-MEDICARE. That hand-off matters because the hospital system that triggered the network loss has no authority over which replacement plan, if any, keeps a patient in-network. The comparison work falls entirely on the enrollee, on a clock set by December 7.
That uncertainty puts the real pressure on the fall enrollment window. Medicare Advantage members whose coverage relies on Lee Health should confirm before December 7 whether their 2027 plan still includes it, rather than waiting on a special enrollment period Medicare has not promised to grant. Switching during Annual Enrollment is guaranteed; waiting for a network-change exception is not. The gap between a scheduled deadline and a discretionary one is the entire financial risk this termination creates for Medicare Advantage households.
Why a Medigap Policy Makes the Network Fight Irrelevant
Lee Health’s own FAQ answers one question more clearly than any other: members who pair traditional Medicare with a UnitedHealthcare or AARP Medigap policy are unaffected. Medigap is not a managed-care network product; it pays as a secondary insurer behind whatever provider accepts Medicare, regardless of which company sold the supplement. Lee Health confirmed it will keep billing Medigap policies exactly as before, stating the network change will not affect Medicare Supplement coverage. A contract fight between a hospital system and an insurer’s Medicare Advantage business has no mechanism to reach a Medigap policyholder.
The gap between those two outcomes is the real financial lesson of this termination. A retiree on a UnitedHealthcare Medicare Advantage plan with a Lee Health primary care doctor faces a hard network cutoff, a discretionary special enrollment period, and a compressed enrollment deadline. A retiree with Original Medicare and a Medigap supplement faces none of it, because Medigap was built to follow the patient rather than a negotiated network list. That structural difference rarely matters until an insurer and a hospital system stop negotiating.
Lee Health says it will keep posting updates on which health plans remain contracted through leehealth.org, and it has stopped short of saying whether a renewed agreement is possible before the deadline. UnitedHealthcare has not published a competing timeline of its own. Until one side moves, the open question for the next four months is whether a system this size and an insurer this large let a contract lapse over an unresolved authorization and payment dispute, or reach a deal once the public pressure of a hard deadline sets in.
This article was produced with the assistance of AI tools and reviewed for accuracy against the primary sources linked above.
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