As of this writing, NewYork-Presbyterian’s hospitals and medical groups are still in-network for UnitedHealthcare Medicare Advantage members — under an extension that expires August 31, 2026. If the two sides do not sign a new contract by then, most of those members would find one of New York’s largest hospital systems out-of-network on September 1. Both organizations say they are working toward a deal, and neither has announced one. That leaves affected households living on a deadline, with a few facts worth knowing cold.
An extension to August 31 while a multi-year deal gets finalized
Start with what each side has put in writing. The hospital system’s own patient notice, updated July 28, says NewYork-Presbyterian and UnitedHealthcare — which operates in New York as UnitedHealthcare, Oxford Health Plans, and Sierra Health and Life — have agreed to extend current in-network coverage through August 31, 2026, for Medicare Advantage members while negotiations continue.
That extension replaced an earlier, widely circulated cutoff. NewYork-Presbyterian’s notice states plainly that care will not be considered out-of-network starting August 1, 2026, “as previously communicated by UnitedHealthcare” — so if you saw an August 1 date in earlier coverage or a plan letter, it has been superseded. For its part, UnitedHealthcare’s negotiation page, updated July 30, strikes a warmer note than the typical contract standoff: it says network access was extended “while our organizations finalize the terms of our new multi-year agreement.” Encouraging language — but finalizing is not signed, and until a deal is announced, September 1 remains a live risk.
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September 1: what goes out-of-network if there’s no signature
Without a new agreement, NewYork-Presbyterian says all of its hospitals and the practices in its medical groups would be out-of-network for most UnitedHealthcare Medicare Advantage members starting September 1. The list of affected facilities covers the system’s full footprint: the Columbia University Irving and Weill Cornell medical centers, Brooklyn Methodist, Queens, Lower Manhattan, Allen, Hudson Valley, Westchester, Morgan Stanley Children’s Hospital, and the medical group practices in Brooklyn, Queens, Westchester, and the Hudson Valley, among others.
There is a wrinkle inside that list that could catch careful people off guard. Physicians affiliated with ColumbiaDoctors and Weill Cornell Medicine would remain in-network at this time — but the hospital-side services those doctors order at NewYork-Presbyterian facilities, such as diagnostic and laboratory testing, procedures, ambulatory surgery, and inpatient admissions, may not be covered as in-network starting September 1. In the hospital’s own words, that could make it “difficult, if not impossible” for those in-network doctors to actually care for you at NYP facilities. Seeing the right doctor would not guarantee the bill comes out right.
The plans that aren’t touched
Not every UnitedHealthcare card in New York is caught in this. According to NewYork-Presbyterian’s notice, the Medicare Advantage changes do not affect AARP Medigap and Supplemental policies (those pay alongside Original Medicare and are not part of this network fight), and they do not affect Group Retiree PPO plans, the employer-sponsored retiree coverage many former public and private employees carry. Members with individual policies or group HMO plans may also have out-of-network benefits that would still pay something at NYP, though at out-of-network cost-sharing levels; the details live in your specific plan documents.
UnitedHealthcare’s own update frames the August 31 extension broadly, listing employer-sponsored commercial and Oxford plans, Dual Special Needs Plans, Medicaid, the Essential Plan, the Empire Plan, and Medicare Advantage including Group Retiree among the coverage kept in-network while terms are finalized. The one line it draws differently is Individual Family Plan marketplace coverage, which was not extended and has been out-of-network since January 1, 2026. That is a separate matter from the Medicare dispute, but it is a reminder that the exact name on your plan card decides everything here.
If you are unsure which category you fall into, the fastest route is the member services number on the back of your insurance card — ask specifically whether your plan is a Group Retiree PPO or has out-of-network benefits at NewYork-Presbyterian facilities.
Active treatment keeps in-network coverage through November 29
For patients in the middle of care, both a cushion and a cutoff exist. NewYork-Presbyterian says most patients undergoing an active course of treatment (inpatient or outpatient) before September 1 will have their scheduled appointments and treatments, including post-operative care, treated as in-network until November 29, 2026. Starting November 30, non-emergency visits would be out-of-network unless UnitedHealthcare approves them. Pregnant patients get further protection: in-network status for the duration of the pregnancy, including delivery-related postpartum care.
That continuity window is why the September 1 date matters most for care that has not started yet. The hospital also suggests a practical step if a deal isn’t reached: if you have an appointment already scheduled for after August 31 at an affected facility, ask your care team whether an earlier slot is available.
If you’d rather not wait on the negotiators
Some households would sooner switch plans than track a contract dispute, and NewYork-Presbyterian’s notice points in that direction too: it says you may be able to switch plans to avoid a potential loss of in-network coverage, and directs individual HMO and POS enrollees to Medicare’s plan comparison tool or a Medicare representative at 1-800-633-4227; group retirees are told to check options with their former employer. The system’s notice lists the Medicare plans it currently accepts in-network: Aetna, Anthem BCBS, Cigna, EmblemHealth, Fidelis, Healthfirst, MVP Health Care, and Wellcare, with the caveat that not every plan is accepted at every NYP location, so verify with your provider’s office before moving.
The last word belongs to the two parties themselves. UnitedHealthcare’s July 30 update says the organizations are finalizing a new multi-year agreement; NewYork-Presbyterian’s July 28 notice says that if no agreement is reached by August 31, its facilities become out-of-network for most UnitedHealthcare Medicare Advantage members on September 1. Between those two statements sits the month of August — and, as of August 6, no announced deal.
This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.
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