Bunkerhill Health has raised $55 million to scale its agentic AI platform, Carebricks.

The closing of the company’s Series B round, announced today, folds in continued participation from Sequoia Capital, Felicis, Optum Ventures, and Y Combinator. However, a funding total doesn’t answer the key question any hospital executive wants to know about healthcare AI: does the software run inside a working hospital?

That question is among the reasons why Khosla Ventures put its name on this deal. Healthcare organisations have put no shortage of funding behind machine learning pilots that perform well in a research setting and then never touch a live patient chart.

Bunkerhill’s argument to investors, and to the health systems already paying for it, is that Carebricks closes the space between a model that works in a sandbox and one that runs against live clinical data at institutional scale.

The backdrop is a spending number and a staffing problem. US healthcare spending hit $5.3 trillion in 2024, according to the Centers for Medicare & Medicaid Services, and labour shortages continue to strain providers nationwide.

Bunkerhill frames the opportunity around a gap between what health systems want to do for patients and what their staff have time to execute. Decades of investment went into documentation systems meant to ease the burden on clinicians. Bunkerhill’s bet is that the next round of technology spending goes toward software that acts on ideas clinicians already have, rather than just recording them.

“Medicine has advanced faster than our healthcare system’s ability to operationalise it,” explained Nishith Khandwala, Co-Founder and CEO of Bunkerhill Health. “Every leading health system has more opportunities to improve patient outcomes than its workforce has capacity to address. We believe AI agents can help them turn more of those ideas into reality.”

Carebricks lets hospitals build their own agents rather than buying a fixed product off the shelf. Some agents review cardiology imaging for early signs of heart disease and flag patients who need follow-up care. Others handle prior authorisations or keep registry data current, and the range extends into administrative work that rarely gets attention in AI pitches but consumes staff hours every week. Cleveland Clinic, the University of Texas Medical Branch, and Intermountain Health all run the platform today.

Vinod Khosla, Founder of Khosla Ventures, said: “The bottleneck in healthcare AI was never the technology, it was getting a health system to actually run it. Bunkerhill closed that gap. They made it much, much easier to adopt AI and already have traction inside critical health systems that would take most companies years to earn.”

Twenty AI agents running inside one hospital system

UTMB offers the clearest picture of what “running it” looks like once the pilot label comes off. The system now has more than 20 agents live on Carebricks, spanning clinical care, operations, and…


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Last Update: July 17, 2026