Anterior

Anterior builds clinical AI for health plans to automate administrative work, including prior authorization, claims adjudication, and risk adjustment. Its Actions are modular tools for gathering clinical records, checking information, structuring documents, applying medical policies, and generating summaries. Health plans can integrate these tools into their own agents and workflows or use managed deployments with Anterior’s clinicians and engineers. The platform is FHIR-native and API-first, with audit logs and human review built into workflows.

Founded in 2022 by Abdel Mahmoud and Zahid Mahmood, Anterior is led by co-founder and CEO Abdel Mahmoud, a physician and former Google product leader. Its engineering combines OCR and vision to process clinical documents while preserving references to original files and pages. A rules compiler converts medical guidelines into version-controlled decision trees; the reasoning engine records the evidence behind each decision. Its prior-authorization AI recommends approval or escalation to a clinician, rather than independently denying care.

In 2026, the company reported supporting organizations covering 50 million lives, with production deployments including Geisinger Health Plan. Anterior also closed a $40 million funding round that year, bringing total capital raised to $64 million, with participation from NEA, Sequoia Capital, FPV, and Kinnevik.