The health data already exists. The evidence was missing.
HealthData Brasil turns health data into auditable, reproducible analysis — integrating multiple sources, without rewriting the same pipeline for every study.
The data exists — and it's hard.
Brazil's health data is vast — and fragmented. The public SUS databases hold admissions, encounters, and deaths from across the country, year after year; and there is also the data living in insurers, hospitals, and other systems. It's scattered, in legacy formats, with caveats that change by year and by database and patient links that don't come ready. Turning all of that into reliable evidence is hard work.
From data to decision.
We bring together the engineering to integrate and extract this data at scale and the expertise to interpret it with specialists. The result is not a spreadsheet — it's evidence ready to guide industry, health system management, and research.
Every day, Brazil records one of the largest health data archives in the world: every admission, every exam, every death of more than 150 million people, stored in the public SUS databases. It's a living memory of the country's health — and it almost never becomes evidence. It's all there, public, and yet out of reach.
Nelson Wolosker knows this paradox firsthand. For nearly a decade, he turned health records into research that changes the care of real patients. But he kept hitting the same wall: the data existed, and yet the most important questions went unanswered — not for lack of information, but for lack of the time and hands to reach it.
João, an engineer and medical student, and Felipe, a physician-scientist, reached the same data from opposite paths — and the same frustration. Every new study started from scratch: downloading legacy files, cleaning, reconciling formats that change every year, working around caveats no one documents. Weeks of manual work before the first answer. The knowledge stayed locked behind the effort of reaching it.
In 2026, we discovered we were each chasing, on our own, exactly the same thing. Instead of rebuilding the same path in isolation — again, and again — we decided to build it once, well, and open it to everyone. HealthData Brasil was born.
Today we are a health data intelligence hub in Brazil, integrating public sources and beyond, where a health question becomes solid analysis in minutes, not months. We remain driven by the conviction that brought us together: better decisions are born from better evidence — and turning public data into reliable evidence is a concrete way to care better, spend better, and deliver more health to those who need it.
The founders.
Clinical practice, engineering, and health research, on the same team.
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Felipe M. Berg, MD
Physician-scientistA physician trained at FICSAE, an MD/PhD candidate in Health Sciences at FICSAE in partnership with Case Western Reserve University (Cleveland, USA), and a research fellow at Hospital Israelita Albert Einstein. At HealthData, he is the clinical reading: he makes sure every analysis starts from a real health question and ends in evidence a doctor can trust.
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João Luis R. Freitas, MSc
Engineer · data scienceAn engineer from École Polytechnique (Paris, France), with a master's in applied mathematics and data science, and in his 5th year of Medicine at FMUSP. This rare combination — mathematical modeling, data engineering, and clinical training — is the bridge between raw data and the health question: what turns scattered sources into reliable analysis at scale.
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Nelson Wolosker, MD, PhD
Physician-scientistA physician, doctor, and associate professor (livre-docente) from the University of São Paulo Medical School and Dean of FICSAE; previously, he was Vice President of Research and Innovation at Hospital Israelita Albert Einstein. A vascular surgeon with more than 400 published works, he has spent decades turning health records into research that changes care — the scientific leadership and institutional vision that anchor HealthData.
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