At West Coast Dental, nearly 70,000 insurance claims once sat in the backlog, held up by the slow process of phone-based follow-ups. Resolving them would have required five new hires. Instead, the organization turned to SuperDial, which now handles more than 10,000 calls a month for the group, freeing staff and improving cash flow. For co-founders Sam Schwager and Harrison Caruthers, this is exactly the kind of burden their AI voice company was built to lift.
SuperDial is aiming to solve one of healthcare’s most entrenched and expensive inefficiencies: manual administrative phone calls. These calls (for benefits verification, prior authorization, credentialing, claims follow-up, etc.) may seem mundane, but they represent a major drag on a $150 billion revenue cycle management (RCM) industry.
Founded in late 2023, SuperDial is already showing momentum. The company has crossed seven figures in annual revenue, handles tens of thousands of calls each week, and has raised over $20 million in funding. Its $15 million Series A round, announced this week, and led by SignalFire, marks one of the first investments from the firm’s $1 billion applied AI fund.
“We’re laser-focused on these calls between billing teams and payers,” said Schwager in an interview with Fierce Healthcare. “Billions of these calls are made every year, and they’re extremely expensive and burdensome. We want to make them a thing of the past.”
Schwager and Caruthers, who met at Stanford while studying computer science, previously ran a revenue cycle management company. There, they saw teams burning thousands of hours navigating phone trees, waiting on hold, and transcribing information from payer representatives.
They began building an internal tool to automate the most repetitive parts of that process. When it worked, they spun it out as a standalone AI platform: what would become SuperDial.
The company’s core product is a HIPAA- and SOC2-compliant AI voice agent that places outbound calls to insurers. The agents are designed to complete full workflows: navigating IVR menus, holding for a representative, gathering required information, and writing back the results into electronic health records (EHRs) and other systems. When the AI cannot complete a task, the call is routed to SuperDial’s human fallback team. This combination ensures reliability while allowing the AI system to learn from each interaction.
Expanding the Flywheel
SuperDial’s near-term focus is twofold: deepen its integrations with EHR systems and expand into more administrative workflows. That includes enrolling more provider types, enhancing documentation automation, and refining its agents through real-world data. Earlier this year, the company acquired MajorBoost, a Seattle-based AI startup with similar capabilities. That acquisition strengthened SuperDial’s engineering team and enhanced its proficiency in navigating insurer workflows.
The recent funding will be used to build out this roadmap. SignalFire’s general partner Yuanling Yuan said in a statement that the firm backed SuperDial because “agentic AI infrastructure is inevitable,” and the company was “building the connective tissue for how the healthcare ecosystem will communicate in the future.”
“Healthcare never built the APIs to enable clean, system-to-system communication,” he said. “But we’re building the next best thing: a network of AI agents that can navigate fragmented infrastructure on behalf of the organizations that rely on it.”
Narrowing Focus for a Competitive Field
SuperDial isn’t alone in chasing the voice AI opportunity in healthcare. Infinitus Systems, another San Francisco startup, has raised over $100 million and is applying AI agents to similar use cases. Athenahealth and Outbound AI also offer automation for administrative phone tasks.
What may distinguish SuperDial is its singular focus on high-friction, outbound RCM workflows. Where others are building broader communication assistants, SuperDial has concentrated its engineering on solving one specific bottleneck: insurer-facing phone calls.
With institutional buy-in, increasing deployment among provider groups and billing firms, and rapid iteration on core infrastructure, SuperDial is carving out a space in a practical and under-digitized corners of healthcare.
