The archive · Health & Care · Product decision · 2024–2026
Cenote bets AI agents fix fax-era clinic referrals — 50% weekly ARR growth, YC W25
YC W25 startup automates referral intake for specialist clinics — parsing faxes, verifying insurance and scheduling so patients stop falling through the cracks.
Cenote
What the business is
Cenote sells AI back-office automation to specialist medical clinics: agents ingest referral faxes, extract and validate patient data, check insurance eligibility and integrate with clinic EHRs, compressing referral-to-treatment from weeks to hours.
Starting capital：$500K standard YC W25 investment (early 2025).
How it started
Kristy Gao (University of Waterloo BCS '22, ex-Watershed Climate) moved to San Francisco for her first job and got into an accident; as a Canadian on a work visa she spent months disputing four insurance claims, and the follow-up surgery she was told would happen within a month took six. She quit her job — moving home to Canada for months while her visa situation resolved — and founded Cenote in 2024 with Kofi Ansong and Ajani Smith-Washington, friends from the book club she had started to build community in the city. Their target: specialist clinics where referrals, insurance requests and follow-ups still arrive by fax.
What happened
Cenote was accepted into Y Combinator's Winter 2025 batch and presented at Demo Day on 2025-03-12. The Launch HN post on 2025-03-06 drew 61 points; commenters pressed the team on EHR competition and liability, and the founders answered that their system flags low-confidence OCR and LLM output for human review, and that physicians always make the final call. The $500K went into a sales-forward push — conferences like Medtrade, in-person onboarding and custom EHR integrations built with AI browser automation. By May 2025 TechTimes reported 50% week-over-week ARR growth, with sleep clinics, durable-medical-equipment providers and neurology practices processing thousands of patients monthly; specialty pharmacies and wound-care clinics were next on the roadmap.
No ending yet — it is still running.
Background
Cenote automates the back office of specialist medical clinics with AI agents. Its product ingests referral faxes, extracts and validates the patient information, checks insurance eligibility and integrates with the clinic's EHR, shrinking a referral-to-treatment process that often takes weeks down to hours — and, in the process, recovering referrals that would otherwise fall through the cracks.
The idea grew out of Kristy Gao's own experience: after an accident in San Francisco, the Canadian software engineer spent months disputing insurance claims, and the follow-up surgery she was promised within a month took six because of referrals and in-network provider searches. She founded Cenote in 2024 with Kofi Ansong and Ajani Smith-Washington, and the team joined Y Combinator's Winter 2025 batch in early 2025, presenting at Demo Day on March 12.
Cenote's wedge was fax-heavy specialty clinics that bigger EHR vendors don't serve well: sleep clinics, durable-medical-equipment providers and neurology practices. Rather than waiting months for EHR integrations, the startup used AI browser automation to build them in days, and designed safeguards so low-confidence OCR or model output gets flagged for a human while physicians retain final review.
By May 2025 the company reported 50% week-over-week ARR growth since joining YC and said it was processing thousands of patients monthly across its clinic segments. The pitch rests on a stark industry figure quoted in its coverage: 40-60% of patient referrals drop off in the manual fax workflow, costing the US healthcare system over $150 billion a year.
What has to be true
- Gao's six-month wait for her own surgery made the pain concrete: referral and insurance admin, not medicine, was delaying care.
- Specialist clinics feel every lost faxed referral in both patient outcomes and revenue, so the ROI case is visible without a sales deck.
- Custom EHR integrations built with AI browser automation removed the months-long technical barrier that normally blocks small teams.
- Human-in-the-loop design answered the liability question — physicians review, agents accelerate — which is what clinics needed to hear.
What can be applied
Attack the workflow where failure is visible: clinics that watch faxed referrals vanish feel the loss immediately, so an agent that recovers some sells itself.
Aftermath
As of 2026-09-05 Cenote is live and repositioned. Its website now sells HIPAA-compliant call, SMS and WhatsApp AI sales agents for telehealth and D2C health brands — abandoned-cart, checkout and win-back recovery — rather than clinic referral back-office automation. A YC Launch page dated 2026-04-23 says one clinic's agent converted at 2x the rate of a human rep, and the current site reports tripling a client's abandoned-checkout recovery and a roughly 15% lift in company-wide conversions; those figures are Cenote-reported.
Sources
- Y Combinator Backs Cenote's Plan to Process Thousands of Patients Using AI
- How landing in the ER led Kristy Gao to Y Combinator
- Launch HN: Cenote (YC W25) – Back Office Automation for Medical Clinics
- Launch YC: CENOTE - Sales Agents For Digital Health Clinics
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