LANSING, Mich. (Michigan News Source) – Michigan Democratic Attorney General Dana Nessel is taking a break from suing the Trump administration. This time, she’s going after one of the state’s biggest health insurers. Nessel filed a federal lawsuit Thursday, October 8, accusing Blue Cross Blue Shield of Michigan (BCBSM) of operating an illegal monopoly that drives up insurance costs while squeezing health care providers.
The lawsuit, filed October 8 in U.S. District Court for the Eastern District of Michigan, alleges violations of federal and state antitrust laws.
Controlling the Market, Raising the Costs
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According to Nessel, BCBSM controls 65% of Michigan’s health insurance market and 79% of its preferred provider organization (PPO) market.
The lawsuit alleges the insurer conspired with the broader Blue Cross network to restrict competition, inflate premiums and slash reimbursement rates for medical providers.
Nessel said in a press release, “Blue Cross Blue Shield of Michigan, as a member of the Blue Conspiracy, has built and operated an illegal monopoly on health insurance coverage in Michigan, and today we brought this lawsuit for the millions of Michigan households, patients, parents, providers, doctors, small business owners, large employers and taxpayers, and consumers everywhere that are paying the price for Blue Cross’s unchecked market power.”
She continued, “Blue Cross Blue Shield of Michigan has implemented substantial premium increases and deep reimbursement cuts, unchecked by meaningful competition, to drive up our costs of care, drive down our quality of care, and turn our worsening medical outcomes into their increasing profits.”
Hospitals and Patients Feeling the Squeeze
As examples of the problems allegedly caused by BCBSM’s practices, Nessel’s office points to the June closure of Sturgis Hospital and a 2026 reimbursement dispute between BCBSM and Michigan Medicine that potentially threatened access to care for nearly 300,000 residents.
Physical therapy providers have also struggled. “Reductions totaling nearly 20% per visit over the past year have pushed many clinics to the brink, resulting in clinic closures, workforce reductions, and frozen hiring despite growing patient demand,” said Brian Gilbert, president of Michigan’s chapter of the American Physical Therapists Association.
What Happens Next?
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Nessel wants the court to permanently stop BCBSM’s alleged anticompetitive practices and award the state all available damages, disgorgement, and civil penalties. The lawsuit, brought by the State of Michigan and the People of the State of Michigan, also includes claims of public nuisance and unjust enrichment, alleging BCBSM’s business practices harmed the public and allowed the insurer to unfairly profit at others’ expense.
Nessel told the Detroit Free Press that the lawsuit is “arguably the most consequential antitrust case ever filed by a state against a health insurance company.” While she acknowledged that she doesn’t yet know the potential financial recovery from the lawsuit, she estimated it could reach hundreds of millions of dollars. It remains unclear how much of any recovery would go to the state and whether Michigan consumers, taxpayers or health care providers would actually receive any money directly.
What BCBS Has to Say
Michigan News Source reached out to Blue Cross Blue Shield of Michigan about the lawsuit and received a response attributed to the company: “We were blindsided by this announcement by the Attorney General. Blue Cross Blue Shield of Michigan has not yet been served and therefore we cannot comment on the specific merits of the case. We fundamentally disagree with the Attorney General’s characterization of an uncompetitive insurance market in Michigan. Competition exists everywhere in our state’s insurance markets, with strong local and national insurers competing with us every day. For nearly 90 years, Blue Cross has provided coverage for citizens across Michigan, in every county, without exception. This heritage, and the quality of products and services we provide, is foundational to our success in Michigan.”
