Rivet
Estimates, underpayment recovery, and denial workflows
Our take
Rivet, founded in Salt Lake City in 2018, built billing software around a single idea: if you digitize a provider's payer contracts, you can price care accurately before the visit and catch underpayments after it. The platform generates patient cost estimates that satisfy No Surprises Act requirements, models contracted rates down to the tax ID, flags claims paid below contract, and manages the recovery work in dashboards and worklists. It connects to more than 30 practice management and clearinghouse systems, with Epic and athenahealth among them, and is listed on the athenahealth Marketplace.
Rivet raised $31.5M from investors including Catalyst Investors, Menlo Ventures, and Lux Capital before Zelis acquired it in January 2026 after a period of partnership. The acquisition is the central fact a buyer needs to weigh. On one hand, Rivet's analytics now sit on a platform connected to 750+ payers with far more resources behind it. On the other, Zelis is a payer-facing company, and providers evaluating Rivet today are really evaluating Zelis's intentions for the product.
What it does
- Upfront patient cost estimates and good faith estimates
- Payer contract modeling down to the TIN level
- Automated underpayment detection against contracted rates
- Denial and payment variance dashboards
- Worklists for recovery project management
Where it's strong
- Unusually broad integration surface for its size, with 30+ practice management and clearinghouse connections including Epic and athenahealth.
- It pairs front-end estimates with back-end underpayment recovery, so one contract dataset powers both.
- Zelis ownership brings the resources and payer network of a much larger payments company.
What buyers should weigh
- The January 2026 Zelis acquisition means roadmap, pricing, and support models could change; ask hard questions about product continuity.
- Zelis primarily serves 750+ payers, and some provider organizations will be uneasy having their underpayment data inside a payer-aligned vendor.
- Its history is strongest with physician groups and mid-size practices, less proven as an enterprise hospital platform.
Latest
Zelis acquired Rivet on January 12, 2026, folding its revenue cycle analytics into the Zelis platform serving 750+ payers; terms were not disclosed.
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