Blue Cross Blue Shield of Michigan is quietly selling off its Advantasure subsidiary.
Last week, Aliso Viejo, Calif.-based health insurance administrator UST HealthProof announced it had entered into a definitive agreement to buy the Glen Allen, Va.-based Advantasure for an undisclosed sum.
UST made no mention of whom it entered into a contract with to take over Advantasure. But BCBSM formed Advantasure in 2016 to provide back office,…