In the race to automate healthcare's byzantine administrative machinery, speed matters. Perhaps nothing illustrates that quite like Prosper AI's trajectory: The New York startup has closed a $30 million Series A led by Andreessen Horowitz barely nine months after announcing its seed round—a compressed timeline that suggests either remarkable traction or unusual investor enthusiasm. Likely both.
The company, which deploys voice AI agents to handle everything from appointment scheduling to insurance verification and payment collection, secured backing from Base10 Partners alongside returning investors Emergence Capital, Y Combinator, and Company Ventures. It's a bet that the chaotic, phone-heavy world of patient access—long resistant to technological overhaul—might finally yield to artificial intelligence sophisticated enough to actually work.
Prosper's platform doesn't just answer phones. It integrates directly with major electronic health record systems including Athenahealth, ModMed, Veradigm, and eClinicalWorks, executing what the company calls "end-to-end" interactions: scheduling patients, verifying insurance eligibility, fielding billing questions, chasing down payments. The kinds of workflows that currently tie up staff hours and frustrate patients calling into perpetually understaffed front offices.
The Metrics That Mattered
Since its $5 million seed round in September 2025, Prosper claims revenue has grown fivefold. The platform now serves more than 60 organizations spanning 150,000-plus providers—a footprint touching roughly $1.3 billion in patient care volume, according to company figures. The company reports that the system automates between 50% and 70% of workflows like appointment scheduling, and Prosper says it prevails in roughly 80% of competitive evaluations when providers test multiple vendors, though these metrics have not been independently verified.
Those numbers, if they hold, explain why Jay Rughani, a partner at a16z Bio + Health, framed the investment around pull-through momentum. "Prosper has shown exceptional pull-through with customers across the entire patient journey," Rughani said in a statement—venture-speak for clients actually using the product across multiple use cases rather than just one narrow application.
That breadth matters. Healthcare suffers no shortage of point solutions promising to fix scheduling or claims or some other isolated pain point. Prosper's pitch hinges on tackling the full spectrum of patient and payer interactions, operating as something closer to an "AI workforce" layered atop existing EHR infrastructure. Whether that ambition translates to lasting differentiation remains to be seen.
Founders With a Formula
Co-CEOs Xavier de Gracia and Josep Marc Mingot launched Prosper in 2023, graduating from Y Combinator's Summer 2023 batch. De Gracia arrived with stops at JPMorgan and Bain & Company plus a Harvard MBA in tow; Mingot holds degrees in mathematics and telecom engineering from Barcelona universities and spent time conducting computer vision research at MIT. The sort of pedigree that opens doors in venture circles, certainly.
Their company now operates with between 11 and 50 employees split between New York and Barcelona—a relatively lean team for the scale of operations described. According to company materials, Prosper tells prospective customers it can deploy its system within three weeks and claims to reduce administrative costs by more than 40%, though those figures naturally require the usual caveats around individual client circumstances and lack independent verification.
Base10 Partners co-founder Adeyemi Ajao highlighted what he sees as convergence: agentic AI meeting healthcare operations at an inflection point. Prosper counts Jackson Memorial Hospital, Preferred Dermatology, and Piedmont Plastic Surgery & Dermatology among its roughly 50 live outpatient groups—a client roster spanning health systems and private practices.
Crowded Field, Big Stakes
The fresh capital will fund expanded engineering and customer-facing teams while deepening EHR integrations, according to the company. But Prosper enters a market already thick with contenders. Hello Patient raised $22.5 million in September 2025. Infinitus Systems closed a $51.5 million Series C in 2024. Each pitches some variation on voice AI solving healthcare's notorious administrative bloat.
The framing—healthcare's $450 billion administrative waste problem—has become almost boilerplate in pitch decks. Yet the challenge remains stubbornly real. Provider groups and health systems desperate for automation that actually meshes with their existing technology stacks represent a massive opportunity. Whether any single vendor captures meaningful share, or whether the market fragments across specialized players, will play out over the next few years.
For now, Prosper has secured validation from one of Silicon Valley's marquee firms and the runway to prove its model works beyond early adopters. The next chapter will likely determine whether this compressed fundraising timeline was prescient or premature.
Correction note: An earlier version of this article referenced specific recent dates that could not be independently verified. Language has been updated to reflect general timeframes.
