In the past year, healthcare systems and providers across the country have filed a series of antitrust lawsuits against MultiPlan Inc. and major US health insurers, alleging a hub-and-spoke conspiracy to fix and reduce reimbursement rates paid to providers for out-of-network healthcare services. There have been cases filed in both state and federal courts on behalf of individual plaintiffs and putative classes. Several federal class actions, filed in at least three separate jurisdictions, were consolidated in the Northern District of Illinois on Aug. 1 and will proceed in front of Judge Matthew Kennelly for pretrial proceedings. Meanwhile, a California court handed MultiPlan a victory in one of the earliest-filed cases in August. But that decision by no means signals that the tide of antitrust litigation in the industry is ebbing.