Company profile · 3 min read
Hey Revia: acquired healthcare voice automation for payer and pharmacy calls
Historical healthcare voice-AI assistant for prior authorizations, credentialing, billing disputes, referrals, and complex payer calls; YC marks the company acquired.
Cofounder of Lazyweb (a16z Speedrun). Previously grew subscriptions and built native ads at Duolingo. Writes First1000 (90,000+ subscribers).
Published · Updated
Hey Revia was a voice-AI assistant for healthcare providers that handled complex calls with insurers, pharmacies, and payers. YC now marks the company Acquired, while the current public destination is OpenLoop Health, so this page should be read as a factual company-history profile rather than a recommendation to buy Revia as a standalone product.
What it did
Revia offered web, mobile, and API access for calls such as credentialing verification, prior-authorization follow-up, billing disputes, and referrals. Its public launch described navigating IVR systems and holding through tedious healthcare calls (YC profile; YC launch).
| Fact | What the public sources say |
|---|---|
| Original buyer | Healthcare providers, health-tech teams, payers, and operations groups |
| Original workflow | Complex phone calls, IVR navigation, verification, prior authorization, billing disputes, and referrals |
| Current directory status | YC marks Hey Revia as acquired |
| Current public destination | The collected company homepage resolves to OpenLoop Health, a broader white-label virtual-care platform |
| Founders | Shaun Wei and David (Wenbo) Zhu |
Why it mattered
The original product focused on a narrow but expensive administrative bottleneck: staff spending hours on hold or navigating payer and pharmacy phone systems. A voice agent that could carry context, complete the call, and return a structured result would be useful only if it handled identity, consent, escalation, recording, and the exact payer workflow reliably.
The acquisition status is the important current fact. OpenLoop's public site describes a larger white-label telehealth operating system, but the reviewed sources do not state how Revia's product, team, or technology maps into that platform. A buyer should not infer that the former Revia product remains separately available. The YC launch's HIPAA language is a company claim, not an independent healthcare security audit.
Wei's public background includes Google Assistant and Pony.ai; Zhu previously worked at Google and Brex (YC company profile).
Short version: preserve Hey Revia as an acquired healthcare-voice company and a concrete example of the payer-call problem. Direct current procurement questions to OpenLoop, and verify which capabilities actually survived the transition.
Sources checked — 2026-09-19
Cohort context
Hey Revia is listed in Summer 2024. In our 2026-09-18 directory snapshot, 161 of 248 listed companies in that cohort have YC’s primary industry label B2B (64.9%). This is a current-directory comparison, not an original intake count or a performance ranking. Nine-cohort dataset.
Public website snapshot
Observed 2026-09-19T16:17:12.876Z in raw homepage HTML. This records visible metadata and advertised links, not agent execution or product quality.
| Signal | Homepage observation |
|---|---|
| Product description metadata | Observed |
| Canonical link | Observed |
| H1 or H2 heading | Observed |
| Typed structured data | Observed |
| Docs/developer link | Not observed in this response |
| Pricing link | Not observed in this response |
| llms.txt link | Not observed in this response |
| Markdown alternate | Not observed in this response |
Public observations · Collection method. Missing links here do not establish that a capability or file is absent elsewhere.
About the author
Cofounder of Lazyweb (a16z Speedrun). Previously grew subscriptions and built native ads at Duolingo. Writes First1000 (90,000+ subscribers).
I cofound Lazyweb and publish Mudpie. This is an owner-written publication, not an independent testing organization. Research notes distinguish observations, sourced reporting and editorial judgment.
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