Bunkerhill Health Raises $55 Million to Help Health Systems Turn Their Best Ideas into Reality

SAN FRANCISCO--(BUSINESS WIRE)--Bunkerhill Health, the agentic AI platform health systems use to turn their best ideas into reality, today announced the close of its Series B funding round, led by Khosla Ventures, with continued participation from Sequoia Capital, Felicis, Optum Ventures, and Y Combinator. The Series B brings Bunkerhill Health’s total funding to date, including its Seed and Series A rounds, to $55 million, reflecting growing investor conviction that agentic AI is foundational infrastructure for healthcare delivery.

According to the Centers for Medicare & Medicaid Services, U.S. healthcare spending reached $5.3 trillion in 2024, while labor shortages continue to challenge providers nationwide. The gap between what health systems set out to do for their patients and what their teams have the capacity to accomplish has become one of the defining challenges in healthcare today. For decades, healthcare organizations have invested heavily in systems that document care to lessen the burden on providers. The next chapter is technology that helps them act on their best ideas for patients.

Healthcare leaders see the emergence of agentic AI as an inflection point.

“Medicine has advanced faster than our healthcare system’s ability to operationalize it,” said Nishith Khandwala, co-founder and chief executive officer 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.”

Bunkerhill’s platform, Carebricks, lets hospitals and health systems turn their own ideas into AI agents that work across clinical, operational, and administrative domains, from reviewing cardiology imaging for early signs of heart disease and identifying patients who need follow-up care to navigating prior authorizations and automating registry management. The platform is in place today at some of the most respected health systems in the country, including Cleveland Clinic, the University of Texas Medical Branch (UTMB), and Intermountain Health.

“The bottleneck in healthcare AI was never the technology, it was getting a health system to actually run it,” said Vinod Khosla, founder of Khosla Ventures. “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. That is the unlock the whole industry has been waiting for.”

At UTMB, Carebricks is being used at institutional scale. AI agents built on the platform are at work across the breadth of how UTMB operates, supporting clinicians, operations teams, and administrative staff alike. In its first month, a coronary calcium detection agent running on an FDA-cleared algorithm flagged a patient at imminent risk of a heart attack. It routed him to cardiology, where the risk was confirmed and a triple bypass was performed, an early detection his care team credits with saving his life.

The gains extend across the system. A nephrology triage agent now prioritizes patients by severity, escalating urgent cases and routing others to telemedicine, cutting average specialist wait times by more than 50 percent. A lung nodule agent identifies incidental findings on CT scans and carries each through to the right follow-up, addressing urgent cases 80 percent faster and doubling guideline-concordant follow-up, all with a drastic reduction in manual coordinator work.

“We have more than 20 AI agents live on Carebricks at UTMB, working across clinical care, operations, and administration,” said Dr. Peter McCaffrey, Chief AI Officer at UTMB. “We’ve already seen tremendous impact on patient care, and we’re only at the beginning of what becomes possible when a health system can operate with agentic AI at this scale.”

Bunkerhill Health will use the funding to expand the Carebricks platform, helping health systems turn a wider range of their own clinical and operational ideas into production-grade AI agents while advancing the governance, monitoring, and safeguards that health systems require to deploy AI at scale.

About Bunkerhill Health

Bunkerhill Health builds Carebricks, an agentic AI platform that gives health systems a single foundation to deploy AI agents across the full scope of how they operate. The company partners with some of the most respected health systems in the country, including Cleveland Clinic, the University of Texas Medical Branch, and Intermountain Health, empowering them to turn their ideas into reality with unmatched speed and flexibility. To learn more, visit bunkerhillhealth.com.