Prosper AI secures $30M from a16z to automate patient journey

American healthcare carries a staggering administrative burden long before a patient ever sees a physician, and the work continues well after the visit ends. The tasks of scheduling appointments, verifying insurance coverage, calculating patient costs, and following up on stalled claims are fragmented and inefficient, collectively wasting hundreds of billions of dollars annually. Prosper AI has now raised $30 million to deploy a fleet of AI-powered phone agents that automate these critical workflows.

The Series A round was led by Andreessen Horowitz (a16z) , with participation from Base10 and returning investors Emergence Capital, Y Combinator, and Company Ventures. Founded in 2023 by MIT and Harvard alumni Xavier de Gracia and Josep Mingot, the company operates out of Madrid and New York. Just last September, Prosper secured a $5 million seed round, underscoring its rapid momentum. Since then, the company reports fivefold revenue growth and has onboarded more than 40 healthcare organizations as clients.

The core innovation goes beyond simple appointment scheduling, which defined the first wave of healthcare voice AI. Prosper’s platform answers patient calls, schedules directly into the electronic health record (EHR) , verifies insurance benefits, automates billing, and contacts insurers when claims require additional information. This end-to-end approach manages both the patient and payer sides of each appointment, from the first call through final reimbursement. The company claims it reduces providers’ administrative costs by more than 40 percent.

The market opportunity is enormous and well documented. Independent research places the annual cost of billing- and insurance-related administration in U. S. healthcare between $400 billion and $496 billion. Prosper’s framing of “+$450 billion” in waste fits comfortably within that range. The real challenge, however, lies in fragmentation: scheduling, verification, and billing have historically operated in separate systems run by different teams. Prosper is designed to bridge that gap.

The company’s customer list includes notable names such as PE-backed dermatology group Preferred Dermatology, Jackson Memorial Hospital in Florida, and major technology partners like Athenahealth, one of the largest ambulatory EHR platforms in the U. S., and ImagineSoftware, which processes over $65 billion in claims annually. Prosper claims that both Athenahealth and ImagineSoftware chose its platform after side-by-side evaluations against competitors, and that it now wins approximately 80 percent of competitive evaluations it enters.

For a16z, the investment is driven by a land-and-expand strategy. “Providers would deploy Prosper AI for scheduling, then quickly ask them to take on insurance verification, then billing, and so on,” said Jay Rughani, a partner at the firm. “That pull-through only happens when your technology can consistently guide patients through the care journey end-to-end.” This bet aligns with a broader trend we have observed, from a16z-backed Telepatia in Latin America to the wider scramble around enterprise AI teammates.

Prosper plans to use the new capital to expand its engineering and customer teams and deepen integrations with the largest EHR platforms. The longer-term vision, according to co-CEO Xavier de Gracia, is “a single platform capable of managing the workflows that determine whether care happens and whether providers ultimately get paid.”