Nitra Raises $187M Series A/B for AI Practice OS
Nitra, an AI-native all-in-one operating platform for healthcare practices, has raised $187M in combined Series A/B equity and debt financing backed by Andreessen Horowitz, NEA, and Pantera Capital. The platform automates back-office functions including finance with a Visa expense card offering up to 2.2% cash back, procurement via NitraMart marketplace, and patient management with AI scheduling. The capital will fuel expansion targeting 3,000 clinics, $4B processing volume, and $150M ARR in 2026 while growing headcount to 200.
AI Healthcare VC Momentum Surges
The raise aligns with surging investor interest in healthcare AI, as Oak HC/FT announced a nearly $2B fund for healthcare and fintech on March 9, 2026. Nitra's platform has already surpassed $1B in annualized processing volume across 700+ practices. Generalist spend managers like Ramp (total funding $1.46B) and Brex ($1.67B) lack healthcare-specific features such as optimized cash back on medical supplies and integrated EHR tools. Nitra addresses this gap with vertical AI tailored for clinics in ophthalmology, dermatology, and med spas.
Fragmented Systems Waste Billions
U.S. healthcare, a $5.9T industry, still relies on fax machines, spreadsheets, and disconnected systems for admin tasks. These workflows consume 25% of costs in practices facing margin pressures from inflation and supply chain issues. Current solutions force providers to juggle six or more tools for finance, procurement, and patient ops. Nitra unifies them into one AI-native OS, enabling focus on care.
Vertical AI Unifies Back-Office
Nitra's Practice Expense Card requires no personal guarantees and issues virtual cards for vendors. AI Finance automates AP, syncs with QuickBooks/Xero, and delivers insights from practice-specific patterns. NitraMart forecasts demand and optimizes vendors, processing $9M in biopharma purchases in one day in December 2025. Patient tools handle scheduling, reminders, and insurance verification via voice AI.
Unlike audit-focused AppZen ($67M funding), Nitra provides cards, cash back, and a marketplace. Spendwell ($10M+ funding) emphasizes claims lending over daily spend management.
Tier-1 VCs Signal Scale Potential
As Pulse 2.0 reported, the $187M includes $72M equity ($50M Series B, $22M Series A), $20M venture debt from Avenue Capital, and $95M warehouse facility. Backers like a16z (seed) and NEA provide growth capital for B2B platforms in regulated sectors. This mix validates Nitra's 740% YoY revenue growth to $33M ARR.
Practice Management Market Expands
The practice management system market stands at $15.96B in 2026, projected to reach $44.4B by 2035 at 8.6% CAGR per The Business Research Company. Trends favor AI for admin automation amid post-pandemic digitization. Competitors like athenahealth focus on EHR while eClinicalWorks emphasizes scheduling; Nitra's full-stack covers finance to patient flow.
Digital health overall hits $492B with 21.6% CAGR, driven by operational efficiencies.
Serial Founders Drive Hypergrowth
Co-founders Tim Hwang and Jonathan Chen scaled FiscalNote to a $1.3B NYSE IPO with $140M ARR. Hwang, Princeton/HBS alum, rang the opening bell at age 29. Their experience in regulated data platforms transfers directly to healthcare fintech. New board member Dr. Richard Park, CityMD founder acquired for $8.9B, adds clinic operations expertise.
As Tim Hwang noted:
"Nobody built the operating system for the business of healthcare. So we did."
Targeting 10x Scale in 2026
Nitra plans AI modules for revenue cycle, marketing, and payroll. With $1B volume milestone hit, the platform eyes national rollout via 700+ existing users in specialties like plastic surgery and optometry. Headcount expansion to 200 supports product and GTM scaling toward $4B volume.