San Francisco's Charta Health announced a $55 million Series B on Nov 10, 2026, led by Insight Partners. Existing investors Madrona, Bain Capital Ventures and South Park Commons joined, along with QuantumLight. The company says the round brings its total funding to $85 million and is its third raise in less than 2 years.
Charta builds AI that reviews medical charts before a claim goes out, which sounds niche until you look at how much money moves through healthcare billing. For Bay Area founders working in healthtech, the round is a useful case study in picking a painful back-office workflow, earning domain credibility and selling to both sides of a market with one product.
What Charta Health does
Charta calls itself an AI medical chart review platform built for billing accuracy. In the funding announcement, the company says its AI reads clinical documentation the way an expert coder and auditor would, flagging codes the chart supports but nobody billed and removing codes the documentation does not adequately support. Findings show up for human approval inside the electronic health record, so clinicians and billing teams stay in the loop.
The Charta Health homepage pitches the product as scaling pre-billing chart review across 100% of patient encounters, and it claims an 11% revenue uplift for customers. That is a company figure, so treat it as a sales claim, but it shows the value story Charta leads with when it talks to hospital and clinic buyers.
The Series B details: investors, total funding and growth
According to the press release, the $55 million round will fund more AI research and development and the formal launch of 2 product lines, Charta for Providers and Charta for Payers, both running on a single AI engine. The company says its revenue grew by a factor of 10 over the last 12 months across both health plans and provider organizations.
Named customers include American Family Care, Grow Therapy and Pediatric Associates Family of Companies. In the release, Jeff Horing, co-founder and managing director at Insight Partners, said the opportunity lies in getting the underlying record right before a claim is submitted. Charta did not disclose a valuation, and we are not going to guess at one.
If you are tracking the pace of AI funding in San Francisco this fall, this round sits alongside our coverage of Mercor's Series D at a $20 billion valuation and our list of October 2026 Bay Area unicorns. For a wider funding roundup, see our breakdown of the Bedrock, Serval and Hex rounds.
Charta for Payers and Charta for Providers explained
The new payer product is a suite of 6 AI tools for health plans, which Charta says it designed with one of the nation's largest health insurers. The list covers retrospective HCC coding, AI-automated second-pass coding, a smart coding platform, prospective risk adjustment intelligence, an HCC validation and audit workflow, and HEDIS and quality care gap detection. Charta says these target insurers in government-paid programs such as Medicare Advantage and ACA Marketplace plans.
The provider product checks every chart against coding guidelines, payer rules and each organization's own clinical protocols before submission. Charta's pitch is that claims built this way hold up better, which means fewer denials and less clawback risk. The two-sided design is the interesting strategic bet here, because insurers and providers usually buy separate tools that apply different standards to the same records.
What founders can learn from Charta's path
The founder story is the part most worth copying. CEO Justin Liu and CTO Scott Morris came from Rockset, the real-time analytics database OpenAI announced it had acquired in June 2024, which the Charta release describes as OpenAI's first product acquisition. Before building Charta, the 2 founders spent a year earning Certified Professional Coder credentials and interviewed more than 100 healthcare leaders. The company now asks its engineering and growth teams to get certified in medical coding too.
A few lessons stand out for teams building vertical AI in the Bay Area:
Earn the credential your buyer respects. Charta's founders learned the coder's job before automating it, which gives them credibility in sales conversations and better product instincts.
Pick a workflow where accuracy has a dollar value. Billing errors show up as denials and clawbacks, so the return on a better review is easy for a buyer to measure.
Keep a human in the approval loop. Surfacing findings inside the EHR for sign-off lowers the trust bar for a regulated buyer.
Look for two-sided leverage. Selling a single engine to payers and providers can turn a point tool into a shared standard.
These ideas line up with the investor advice in our guide on how to raise a Series A in 2026, where growth you can measure and a credible team story carry most of the weight. If you are setting up a new company or issuing founder stock, our guide to filing an 83(b) election online covers the 30-day deadline.
Healthtech founders in the South Bay and Peninsula
Charta is based in San Francisco, and if you are building healthtech on the Peninsula or in the South Bay, from Redwood City and Menlo Park to Palo Alto and San Jose, our guide to healthtech founder communities in the Bay Area lists places to meet operators and clinicians.
Tribe also organizes South Bay Renaissance to rebuild the South Bay and Peninsula startup and social scene in person, through founders' dinners, AI deep dives and demo nights. Healthtech has come up there too. On Oct 22, the Excellence in Tech series in Redwood City hosted The Hospital That Can See with Cloudphysician.
Find your people in healthtech
Funding news is more useful when you can talk it through with people who have sold into hospitals and health plans. The Healthtech Founders Tribe is a group chat for founders comparing notes on payer sales, compliance and hiring. To meet in person, follow the Tribe Events calendar on Luma, which lists the next founders' dinner and South Bay Renaissance gathering as soon as they are announced.
