Healthcare insurers have been using AI to deny claims for years. Now providers are fighting back. Adonis just closed a $40M Series C after achieving 4x revenue growth by helping hospitals like Mount Sinai turn the tables on payers. With the One Big Beautiful Bill reshaping the payment landscape and denial rates climbing, find out how this NYC startup is using AI that learns from tens of millions of claims to stop providers from bleeding 15% of their revenue to inefficiencies.