MentionFox
Home › funding signals › Cero
Accelerator · announced

Cero (YC S21) — Automated communication between hospitals and patients in latam

At Cero, we solve specific coordination tasks between hospitals and patients, such as appointment confirmations and last minute cancellations, by automatically communicating with patients over WhatsApp. For example, a patient can confirm and reschedule their appointment without needing to call anyone.

Cero is a Y Combinator company in the Summer 2021 batch. Its directory entry describes it as: Automated communication between hospitals and patients in Latam. The founders listed are Felipe Rodríguez (Founder), Jorge Pérez (Founder), Mauricio Quezada (Founder) (Y Combinator directory entry, July 1, 2021).

6 more companies from YC Summer 2021 ↓

Run the free check on Cero →

Sell to companies like Cero? Enter your website and see 10 with a filed reason to buy from you this month. Free.

Opens in a new tab. No signup.

Cero

New accelerator entry · 2021-07-01 · the record

Summer 2021
batch
10
people
Early
stage
Chile
region
Open the record →

What the record says

BatchSummer 2021
Announced2021-07-01
StageEarly
StatusActive
Team size10
IndustryB2B
Sub-industryB2B
SectorsMachine Learning, Consumer Health Services, B2B, NLP
RegionsChile, Latin America, Remote, Fully Remote
BasedSantiago, Santiago Metropolitan Region, Chile; Remote
HiringNo
Sitehttps://cero.ai
Previously known asCERO.AI

Pitching, partnering or investing alongside them? See who really runs and owns Cero.

Free to see. No signup.

Keep reading

More on Cero and the records around it.

Also in YC Summer 2021

Same batch, B2B first.

What do you want to do with Cero?

Get the full cited report on Cero

Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC

A Full Report on Cero: verified, sourced, every claim cited, ready in a few minutes. See pricing.

See a sample report

In their words

At Cero, we solve specific coordination tasks between hospitals and patients, such as appointment confirmations and last minute cancellations, by automatically communicating with patients over WhatsApp. For example, a patient can confirm and reschedule their appointment without needing to call anyone. Almost half of the medical appointments in Latin America are missed because patients simply do not show up. This ranges from missing a regular dentist check to missing an expensive MRI scan. With increasing pressure to improve access to care in developing countries, optimizing communication and coordination with patients is a key task to achieve. This is a massive problem especially in places where most people don't know how to effectively use self-service mediums (or are too busy to use them). We bootstrapped the company and we are profitable. As of August 2021 we have $97K in monthly revenue from 15 clients with a CMRG of 20% in the last year. We have 100% logo retention and we grow with our clients. We are currently coordinating over 600,000 medical appointments every month, just in Chile. This problem represents a $3.5B market opportunity in Latin America only. Latin America has 650M people, each one having an average of 3 medical consultations per year. We charge for every time we effectively communicate with a patient. We plan to handle several coordination interactions with every patient for each consultation, which considers a roadmap of scheduling, confirming, booking, reimbursements, payments, among others. We are a team mixing strong knowledge about the healthcare industry with deep technical skills. Felipe (CEO) is a former dentist that has led deep changes in healthcare payments in Chile. Mauricio (CTO) and Jorge (R&D), both PhD in Computer Science, led the creation of the most advanced Spanish Language Neural Network used daily by scientists and practitioners in LatAm (BETO: Spanish BERT). In a weekend project, Mauricio and Jorge automated the communication with students attending a summer school obtaining impressive engagement. Felipe was struggling with contacting his patients to coordinate appointments, and saw a big opportunity in this technology. The three together have designed and run a solution that as of 2021 is coordinating over 600,000 patients per month in their home country, Chile.

Want the whole picture on Cero?

Example from a real report (our sample on Target): “The Q2 2026 earnings report, published August 19, 2026, showed adjusted EPS of $2.46 against an expected $2.33” Source: CNBC

A Full Report on Cero: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on Cero covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

Plus the sections for what you are deciding, which you pick after ordering.

See a sample report

First screen of a real sample Full Report on EchoStar: the verdict, 17 sections, 63 cited sources, built 2026-10-21A real finished report, first screen. Opens in a new tab.

The full profile

Checking your access…

Is this you?

If you're behind Cero: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. GetFoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.

Sourced from the company's Y Combinator directory entry.

RSS

Tools for this story

Each opens in a new tab, filled in for Cero. With no account yet, you sign up free and land on the result.

On these startup lists

Healthcare and health tech startups

Share this page

Is this your company?

Share the news. Sharing needs no account.

Cero: Accepted into Y Combinator Summer 2021
Share on LinkedIn Share on X Download image

Cite this page

Permanent URL: https://mentionfox.com/funding/yc-cero
Last updated 2026-10-20
Primary record: Y Combinator directory entry
Cero (YC S21) — Automated communication between hospitals and patients in latam. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-cero