Carta Healthcare

Carta Healthcare is a San Francisco-based company that automates clinical data abstraction and analytics for hospitals, health systems and life sciences organizations. Its approach, which the company calls "Hybrid Intelligence," pairs artificial intelligence and machine learning with a team of clinical experts, on the premise that registry-grade data requires clinician oversight rather than fully autonomous automation. The company's products include Voyager, a clinician-trained AI data platform; Lighthouse, an AI assistant that answers registry questions during abstraction; Harbor, which supports research through data analysis and cohort selection for clinical-trial patient matching; and Navigator, which converts clinical data and real-world evidence into operational insights. Carta Healthcare also sells expert clinical data abstraction as a professional service, offered as full outsourcing or staff augmentation.

The company reports a staff of more than 300 expert abstractors and states results including cost reductions of 50% or more, abstraction time reductions of up to 66%, inter-rater reliability scores of 98–99%, and 100% customer retention. Named customers and partners referenced in company and press materials include Stanford University Medical Center, CommonSpirit, UCSF, Mass General Brigham, Memorial Hermann Health System, Northern Arizona Healthcare and UNC Health. The company also publishes market research, including a survey of College of Healthcare Information Management Executives (CHIME) technology leaders reporting that 81% of healthcare IT leaders say clinicians must control AI and 77% have seen better outcomes when AI works alongside clinicians.

Founding story

Carta Healthcare traces its origins to a Stanford MBA candidate's 2016 project on operating room efficiency at Stanford Children's Hospital, where the cost and time required for manual data collection prompted a search for an AI-based alternative. A grant from the American College of Cardiology supported the company's founding in 2017.

Business model

Carta Healthcare sells software and services to healthcare provider organizations: an AI platform for clinical data abstraction, registry support and analytics, plus outsourced or staff-augmentation abstraction services delivered by its own clinical abstractors.

Revenue comes from health system customers purchasing its AI data platform and abstraction professional services, with value framed around reduced labor cost of manual abstraction.

Traction

As of November 2022 the company served 20 leading U.S. health systems. Company materials cite 100% customer retention, more than 300 expert abstractors, 2x revenue growth in 2025, expansion of the Lighthouse platform to 21 additional clinical registries, and six industry awards in 2025. Its CFO has described consistent year-over-year growth and a financially healthy company.

Latest developments

In May 2025 the company closed an $18.25 million Series B1 round led by UPMC Enterprises. It has since released CHIME survey findings on clinician control of AI, expanded the Lighthouse platform to 21 additional clinical registries, and won Gold for Technical Innovation in the 2026 Stevie Awards for Technology Excellence.