The AI that sits on hold with your insurance company, so nobody on your team has to.
Above: the SuperDial mascot, a robot whose entire career is hold music. It has heard "your call is important to us" more times than any creature alive.
Somewhere this morning, a phone tree answered "press 1 for claims" and an AI pressed 1. It waited through the hold music. It greeted the insurance rep, asked about a denied claim, confirmed the deductible, and wrote the answer into a hospital's billing system - all before a human finished their coffee. Multiply that by tens of thousands of calls a week. That is SuperDial.
SuperDial builds voice AI agents that place the outbound administrative calls healthcare runs on: eligibility checks, prior authorizations, claim follow-ups, credentialing, provider data attestation. The agents navigate phone trees, endure the hold queue, talk to live payer reps, and return clean structured data into a customer's EHR or revenue-cycle platform. The company is, by its own count, the busiest dialer in healthcare that never asks for a lunch break.
"Nearly 25% of U.S. healthcare spending goes to administrative busywork, not care delivery."
- SignalFire, lead investorThe United States spends roughly a trillion dollars a year on healthcare administration. A large slice of that is people - skilled, expensive people - holding a phone to their ear, waiting for an insurer to pick up. They navigate menus designed in the 1990s. They get transferred. They get disconnected. They call back. It is the kind of work everyone agrees is necessary and nobody agrees to enjoy.
The irony is hard to miss: an industry building gene therapies and surgical robots still settles its bills the way it did in 1995, one held call at a time. Billing teams burn out on it. Backlogs pile up. Claims age past the point of payment. The phone, it turns out, is where revenue goes to wait.
"$100B+ of the admin cost center is phone-based work alone. The hold music is, quietly, a budget line."
- On the market SuperDial targetsSam Schwager (ex-McKinsey) and Harrison Caruthers (ex-Amazon) met as computer science students at Stanford. Their first company was SuperBill, a consumer healthcare billing startup. To run it, they kept having to call insurers - constantly - so they built an internal tool to handle the calls. The tool, as good internal tools do, quietly became the better business.
The bet was simple and slightly heretical: voice AI's first breakout use in healthcare would not be a charming patient-facing assistant. It would be the unglamorous outbound call to a payer. Pick the chore no one wants. Do it at machine scale. In late 2023, SuperBill became SuperDial, and the side-tool moved to center stage.
The company that automates phone calls was born because its founders hated making phone calls. Sometimes the best origin story is just spite, well-engineered.
"SuperDial's deep RCM expertise, vertical focus, sophisticated voice AI technology, scalability, and configurability put them head and shoulders above competition."
- SignalFireYou hand SuperDial a list of calls - upload a CSV, trigger them in bulk, or wire it through the API. The agents place each call, work the phone tree, hold the line, and have the live conversation with the payer rep. When a call gets genuinely weird, human fallback support steps in. Results come back structured and land directly in the EHR or RCM platform, complete with logging and real-time transcription.
Confirms deductibles, co-pays and coverage without a single human minute on hold.
Submits and chases prior auth status across payers, then reports back.
Works denied, delayed and unpaid claims before they age out of payable.
Handles provider credentialing and enrollment inquiries end to end.
Calls to validate and attest provider directory data at scale.
Configurable scripts for any payer or provider call type you can name.
It is, deliberately, not magic. It is plumbing - the kind that makes the difference between a billing team that drowns and one that swims. SuperDial is HIPAA and SOC 2 Type 2 compliant, which in this industry is less a feature than the price of admission.
"If your job is working a backlog of claims, you get through four times as many - because you never pick up the phone."
- On the customer experienceTwo Stanford CS grads launch a consumer healthcare billing startup - and build an internal tool to handle the endless insurer calls.
The internal calling tool becomes the company. The bet: voice AI's first healthcare breakout is the outbound payer call.
SuperDial absorbs the voice AI company MajorBoost to deepen its technology stack.
Teams up to scale voice AI automation across Omega's revenue cycle operations.
SignalFire leads, with Slow Ventures, BoxGroup and Scrub Capital. Total raised tops $20M; one of the first checks from SignalFire's ~$1B applied-AI fund.
Claims of efficiency are cheap; healthcare has heard them all. What gives SuperDial's pitch teeth is that the figures come from operators with backlogs to clear. West Coast Dental cleared a 70,000-claim backlog and now runs more than 10,000 calls a month on the platform. One customer reports 4x claim throughput with no new hires. United Medical Monitoring counts 5,400+ hours saved in three months.
The bars represent reported relative throughput, not audited figures. The hold music, mercifully, is not pictured.
The customer roster spans the messy middle of healthcare ops: dental groups and DSOs, RCM companies and BPOs, digital health platforms, and payers - names like Omega Healthcare, Guardian Life, Riverside Healthcare, Prine Health, GetIx Health, Apex IONM, CBS Medical Billing and Mentaya. Under the hood, partners like Cartesia supply the real-time voice technology that makes the agents sound like they belong on the line.
"One customer resolved a 70,000-claim backlog - and now automates over 10,000 calls every month."
- SignalFire, on SuperDial tractionSuperDial frames its purpose plainly: reclaim the time and revenue U.S. healthcare loses to administrative phone calls, and let billing teams trade repetitive dialing for higher-value problem-solving. The longer arc is an agentic network that quietly absorbs the phone-based busywork of an entire industry.
There is a humane edge to it that is easy to overlook. Behind every automated call is a person who used to make it - and who would rather be doing almost anything else. Automating the chore is not just a cost line; it is a small act of mercy for the people who staff the queue.
"SuperDial measures part of its success in hold music humans never had to hear again."
- The mission, restatedVoice AI's loudest demos tend to be the friendly ones - the assistant that books your appointment, the bot that reads your chart. SuperDial bet on the opposite end: the call no one wants, made millions of times, at the seam where money actually moves through healthcare. If that bet holds, the administrative phone call stops being a cost center and starts being an API call.
So return to the scene we opened with. A robot is on the phone with a payer right now, pressing 1 for claims, outlasting the hold music, writing the answer back into a billing system. The difference is that a year ago that seat was filled by a person watching a backlog grow. SuperDial's wager is that the seat should have been a line of code all along - and that the people once stuck in it have better things to do.
Healthcare will keep making the calls. SuperDial is just betting nobody human should have to.
Product walkthroughs, customer stories and demos live on SuperDial's own channels. Start here.