Corewell Health

We are actively negotiating in good faith to renew our network relationship with Corewell Health in Michigan

We are actively engaged in good faith discussions with Corewell Health (Corewell) to renew our network relationship. Our goal is to reach an agreement that is affordable for the people and employers we serve while maintaining continued, uninterrupted network access to the health system.

In the event we are unable to reach an agreement, Corewell will be out of network for people enrolled in employer-sponsored commercial and individual exchange plans on the following dates:

Effective Jan. 1, 2026:

  • Corewell Health Dearborn Hospital
  • Corewell Health Taylor Hospital
  • Corewell Health Trenton Hospital
  • Corewell Health Wayne Hospital

Effective May 1, 2026:

  • Botsford General Hospital employed providers

Effective July 1, 2026:

  • Corewell Health William Beaumont University Hospital
  • Corewell Health Troy Hospital
  • Corewell Health Grosse Pointe Hospital

Effective Aug. 1, 2026:

  • Corewell Health Farmington Hills Hospital
  • Oakwood Healthcare employed providers

Effective Sept. 15, 2026:

  • William Beaumont Hospital employed providers

People enrolled in the following plans are not impacted and will continue to have network access to Corewell, regardless of the outcome of our negotiation:

  • Medicare Advantage plans, including Group Retiree and Dual Special Needs Plans (DSNP)
  • UnitedHealthcare Community Plan in Michigan (Medicaid)
  • Medicare Supplement plans

Facts you should know

Corewell is seeking unreasonable price hikes that are not affordable and would increase health care costs for consumers and employers in Michigan

Excessive rate demands have an impact on the cost of premiums as well as out-of-pocket costs for the people we serve, while also driving up the cost to do business for employers.

We have a responsibility to provide the people we serve with access to quality health care while also helping to contain rapidly rising health care costs.

We are committed to engaging in productive, good-faith negotiation and urge Corewell to provide a proposal that is reasonable and affordable.

We are proposing rates that will continue to reimburse Corewell fairly and similarly to its peers while slowing the unsustainable rise in health care costs

Maintaining fair and competitive agreements with the providers in our network is critical to our ability to meet this commitment to our members and customers.

We are hopeful that Corewell will work with us to reach an agreement that is affordable for families and customers in Michigan.

We remain open and committed to working with Corewell with the goal of reaching an agreement

We are actively engaged in ongoing discussions with Corewell.

We will remain at the negotiating table as long as it takes. We hope Corewell will join us there and work toward an agreement consumers and employers in Michigan can afford.

The truth about our negotiation with Corewell Health in Michigan

Our top priority is to reach an agreement with Corewell that is affordable for families and employers in Michigan. Unfortunately, Corewell continues to spend its time pushing misinformation to the market rather than working toward an agreement people can afford. We believe facts matter. As a result, we have created the following to help you understand the truth in response to the inaccuracies Corewell has communicated.

Myth vs Fact on our network negotiation
MYTH FACT
UnitedHealthcare pays Corewell Health East hospitals at rates that do not cover basic costs

False. Corewell currently has a double-digit profit margin at its hospitals on UnitedHealthcare commercial plans. If we agreed to Corewell’s price demands, the health system’s profit margin would increase by an additional 30%.

Employers are facing many of the same inflationary and labor pressures health systems are and cannot afford to pay more in health care benefits for their employees. Why does Corewell believe it is entitled to increase its costs when consumers and local companies would be responsible for most of these cost increases? 
UnitedHealthcare denies claims at a high rate

False. When claims are submitted correctly, Corewell’s experience is consistent with claims approvals data we've reported publicly: Get the facts: How many claims are denied?

At UnitedHealthcare, we approve and pay 90% of claims shortly after they’re submitted. The remaining 10% go through an additional review process. We verify the patient is a UnitedHealthcare member, check for duplicate claims, confirm that the physician has submitted the necessary clinical documentation, ensure the service is a covered benefit, and assess whether the service aligns with the most up-to-date, evidence-based clinical guidelines.

After this additional review process is completed, UnitedHealthcare’s claims approval rate stands at 98% for claims for eligible members, when submitted in a timely manner with complete information, and after duplicate claims are removed.

The fact is that a vast majority of Corewell’s claims were approved and paid timely. Out of those that were not approved, most were preventable and would have otherwise been approved if not for Corewell’s own internal administrative errors, including incorrect medical coding, billing for services that are not covered, and claims that are missing required information.

We are open to assisting and collaborating with Corewell in helping them improve its administrative processes. 
Members located in Southwest Michigan and Grand Rapids are impacted by UnitedHealthcare’s current negotiation with Corewell

False. Misleading information was sent to members located in Southwest Michigan and Grand Rapids suggesting that Corewell’s participation in UnitedHealthcare’s network may be ending, despite the fact that Corewell’s hospitals and providers in these regions are not impacted by the current negotiation.

Our existing contracts for Corewell’s hospitals and providers in the Southwest Michigan and Grand Rapids service areas remain active, without any active notice of termination.

This is presumably a negotiating tactic designed to create confusion and uncertainty for employers and stress and fear for members in an effort to pressure us to agree to significant price hikes that are not affordable for the people we serve.

We are disappointed Corewell is putting Michigan families and employers in the middle of this negotiation by creating unnecessary and completely avoidable disruption.

Frequently asked questions

We have created the following FAQs to ensure you and your family have the information needed regarding next steps as well as details to help meet your health care needs.

We are actively negotiating with Corewell Health (Corewell) to renew our network relationship. Our goal is to reach an agreement that is affordable for the people and employers we serve while maintaining continued, uninterrupted network access to the health system.

In the event we are unable to reach an agreement, Corewell will be out of network for people enrolled in employer-sponsored commercial and individual exchange plans on the following dates:

Effective Jan. 1, 2026:

  • Corewell Health Dearborn Hospital
  • Corewell Health Taylor Hospital
  • Corewell Health Trenton Hospital
  • Corewell Health Wayne Hospital

Effective May 1, 2026:

  • Botsford General Hospital employed providers

Effective July 1, 2026:

  • Corewell Health William Beaumont University Hospital
  • Corewell Health Troy Hospital
  • Corewell Health Grosse Pointe Hospital

Effective Aug. 1, 2026:

  • Corewell Health Farmington Hills Hospital
  • Oakwood Healthcare employed providers

Effective Sept. 15, 2026:

  • William Beaumont Hospital employed providers

People enrolled in the following plans are not impacted and will continue to have network access to Corewell, regardless of the outcome of our negotiation:

  • Medicare Advantage plans, including Group Retiree and Dual Special Needs Plans (DSNP)
  • UnitedHealthcare Community Plan in Michigan (Medicaid)
  • Medicare Supplement plans

In the event we are unable to reach an agreement, Corewell will be out of network for people enrolled in employer-sponsored commercial and individual exchange plans on the following dates:

Effective Jan. 1, 2026:

  • Corewell Health Dearborn Hospital
  • Corewell Health Taylor Hospital
  • Corewell Health Trenton Hospital
  • Corewell Health Wayne Hospital
  • Corewell’s Oakwood Healthcare physicians are not impacted by this negotiation and will remain in-network, regardless of the outcome of this negotiation.

Effective May 1, 2026:

  • Botsford General Hospital employed providers

Effective July 1, 2026:

  • Corewell Health William Beaumont University Hospital
  • Corewell Health Troy Hospital
  • Corewell Health Grosse Pointe Hospital

Effective Aug. 1, 2026:

  • Corewell Health Farmington Hills Hospital
  • Oakwood Healthcare employed providers

Effective Sept. 15, 2026:

  • William Beaumont Hospital employed providers

People enrolled in the following plans are not impacted and will continue to have network access to Corewell, regardless of the outcome of our negotiation:

  • Medicare Advantage plans, including Group Retiree and Dual Special Needs Plans (DSNP)
  • UnitedHealthcare Community Plan in Michigan (Medicaid)
  • Medicare Supplement plans

The following hospitals will be out of network for people enrolled in employer-sponsored commercial and individual exchange plans as of Jan. 1, 2026, if we are unable to reach an agreement:

  • Corewell Health Dearborn Hospital
  • Corewell Health Taylor Hospital
  • Corewell Health Trenton Hospital
  • Corewell Health Wayne Hospital

This negotiation impacts members enrolled in employer-sponsored commercial and individual exchange plans.

People enrolled in the following plans are not impacted will continue to have network access to Corewell, regardless of the outcome of our negotiation:

  • Medicare Advantage plans, including Group Retiree and Dual Special Needs Plans (DSNP)
  • UnitedHealthcare Community Plan in Michigan (Medicaid)
  • Medicare Supplement plans

Yes. Medicare Advantage plans, including Group Retiree and Dual Special Needs Plans (DSNP), as well as UnitedHealthcare Community Plans in Michigan (Medicaid) are not impacted by this negotiation and will continue to remain in-network with Corewell, regardless of the outcome of our negotiation.

Medicare Supplement plans are also not impacted.

We understand that network changes can be difficult. Our priority is to provide our members access to the care they need through a robust network of hospitals and providers.

If we are unable to renew our agreement with Corewell, our members enrolled in employer-sponsored commercial plans will continue to have access to a broad network of hospitals and specialty providers across Michigan, including, but not limited to:

  • Henry Ford St. John Hospital
  • Henry Ford Ascension Providence Hospital
  • Henry Ford Macomb Hospital
  • Henry Ford Providence Hospital
  • Henry Ford Wayandotte Hospital
  • McLaren Oakland Hospital
  • McLaren-Macomb Hospital
  • University of Michigan Health System  
  • Trinity Livonia Hospital
  • Trinity Oakland Hospital  

Members enrolled in individual exchange plans, as well as employer-sponsored commercial plans, will continue to have access to the following hospitals:

  • Children’s Hospital of Michigan
  • Detroit RCVG Hospital and University Health Center
  • Harper-Hutzel Hospital
  • Huron Valley Sinai Hospital
  • Rehabilitation Institute
  • Sinai Grace Hospital

Corewell’s Oakwood Healthcare physicians are not impacted by the current negotiation on January 1, 2026, and will remain in-network, regardless of the outcome of this negotiation.

People enrolled in our Medicare Advantage, Group Retiree, Medicaid, and Dual Special Needs (D-SNP) plans will continue to have network access to Corewell, regardless of the outcome of our negotiations.

Medicare Supplement Plans are not impacted by the current negotiation on January 1, 2026, and will remain in-network, regardless of the outcome of this negotiation.

For support finding in-network hospitals, members can call the customer care number on their health plan ID card or visit their plan’s website:

UnitedHealthcare members who are in the middle of treatment at a Corewell hospital or with a Corewell health provider at the time they go out of network may qualify for continuity of care, which provides continued in-network benefits for a specified period of time after a hospital or physician leaves our network.

Examples of conditions that would be eligible for continuity of care include but are not limited to the following:

  • People in active treatment for cancer
  • Individuals in ongoing treatment for transplant services

Any member who believes they need continuity of care should contact UnitedHealthcare to determine if they are eligible.

For information regarding how to apply and whether they might be eligible for continuity of care, members should call the number on their health plan ID card.

In the event of an emergency, UnitedHealthcare members should go to the nearest hospital and will be covered at the in-network benefit level, regardless of whether the hospital participates in our network.

UnitedHealthcare members should always go to the nearest hospital in the event of an emergency. Their services will be covered at the in-network benefit level, regardless of whether the hospital participates in UnitedHealthcare’s network.

For support finding in-network hospitals, members can call the customer care number on their health plan ID card or visit their plan’s website: