Adonis
Revenue intelligence and denial prevention
Our take
Adonis is a revenue intelligence and automation platform that sits on top of a provider's existing EHR and billing systems. It ingests claims data in real time, flags denials, underpayments, and payer behavior shifts, and increasingly acts on what it finds: its AI agents check claim status, draft appeals, and resubmit corrected claims, while prioritized worklists point human billers at the highest-dollar problems. It integrates with athenahealth (via the official Marketplace), Epic, eClinicalWorks, DrChrono, and other major systems.
Founded in 2022 in New York, Adonis has raised over $95M from Point72, General Catalyst, Quadrille Capital, and others, closing a $40M Series C in March 2026 on the back of 4x revenue growth. It reports reaching 20,000 providers, with named customers including Mount Sinai Health System, Allied Digestive Health, ApolloMD, and Tend Dental. The pitch to buyers is recovering the 15% or so of earned revenue that leaks out of traditional RCM. It is a strong fit for organizations that want to keep billing in-house but make the team dramatically more effective.
What it does
- Real-time revenue intelligence dashboards across the claim lifecycle
- Detects denials, underpayments, and revenue leakage automatically
- AI agents work claims: status checks, appeals, resubmissions
- Prioritized worklists route staff to highest-value tasks
- Alerts on payer behavior changes before revenue impact spreads
- Orchestration layer sits on top of existing billing systems
Where it's strong
- Analytics-first approach surfaces why revenue is leaking, not just that it is, which most billing systems cannot do.
- AI agents now autonomously progress claims, and traction is real: 4x revenue growth in 2025 with Mount Sinai as a flagship customer.
- Works on top of your existing EHR and billing stack rather than replacing it.
What buyers should weigh
- It augments your RCM team rather than replacing it; you still need billers, unlike full-service RCM vendors.
- The company is four years old and scaling fast, so expect some product churn and evolving packaging.
- Value depends on claim volume; small practices may not generate enough data to justify the platform.
Latest
Raised a $40M Series C led by Quadrille Capital in March 2026 after reporting over 4x revenue growth in 2025 and net retention above 130%.
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Track this market
First Pass covers Denials & Appeals and the rest of the getting-paid stack every week.