Anterior has raised an additional US$40m, taking its total funding to US$64m.
The oversubscribed round included existing investors NEA and Sequoia Capital, along with new backers FPV and Kinnevik.
The New York-based company is integrating AI into clinical workflows for health plans, using a clinician-led deployment approach to improve accuracy and adoption.
Since its Series A in June 2024, Anterior has expanded deployments across major US health plans, supporting organisations covering more than 50 million lives.
The company reports a clinical accuracy rate of 99.24 per cent, validated by KLAS Research, and says it has reduced review cycles by about 75 per cent.
Anterior has also added senior healthcare leaders as advisers to support its growth and enterprise governance.
