Atlas, built for medical AI developers.

We provide medical AI developers with instant access to large, diverse, and de-identified datasets ready for training and validation at scale.
With millions of patient journeys across data types and modalities you can minimize bias, reduce costs, iterate faster, and focus on building breakthrough models instead of sourcing data.

Trusted by leading AI teams, healthcare institutions, and research organizations.

Trusted medical AI datasets for training and validation

Atlas, built for developers

Machine learning ready formats.
Searchable by data type, modality, disease, key words, and demographics.
Multimodal data spanning EHR, pathology, radiology, and more.

Why AI teams choose Atlas

Price

High-quality, quick-access data at a fraction of the cost of other services. Ensuring that affording crucial training data is no longer a hurdle for medical AI developers.

Speed

Self-serve your data needs, with instant previews and full data delivery in as little as 48 hours. Eliminating time-consuming back-and-forth and lengthy waits for data.

Quality

Assess dataset diversity and comprehensiveness with our unique visual summary. Every dataset is meticulously de-identified.

Impact comes first

Better data helps create better healthcare outcomes.

How Atlas works.

Find, evaluate, and access high-quality medical datasets through a streamlined platform built for modern AI development.
Download The Atlas Brochure

Set up

Start your 7-day free trial. One of our data sourcing specialists will get you set up with an account.

Search

Quickly search millions of de-identified patient journeys across data types and modalities within our easy-to-use platform. Use powerful filters and preview your data instantly.

Analyze

Assess the diversity and comprehensiveness of your data using intuitive visual tools built into Atlas.

Receive

Once selected, your data export is prepared and delivered in as little as 48 hours in developer friendly formats.

Build

Train and validate your AI models with diverse, high-quality datasets, accelerating product development and regulatory clearance.

Trusted by teams building the future of medical AI

We help AI developers and healthcare institutions access high-quality medical data at scale, accelerating the development of next-generation medical AI.
Explore Atlas
When medical AI teams need data done right.

“The team at Gradient Health is a pleasure to work with. Knowledgeable and responsive, they strive to get you the exact data you need, even for atypical cases.”

Jason Knapp
CTO @ Riverain
From first contact to delivery in record time.

"After looking for a data provider for many weeks, I was not able to get even a sample delivery within one month. I was immensely glad to work with Gradient then and go from first contact to final delivery WITHIN 1 WEEK!"

Julien Schmidt
COO & Cofounder @ Mango Medical
The data you need, exactly when you need it.

“Imaging is already one of the strongest applications for medical AI. By adding multimodal context, Gradient can help developers build more useful, representative, and generalizable systems, while addressing one of the field’s biggest data access challenges.”

Pranav Rajpurkar
PhD, Associate Professor at Harvard Medical School and co-founder of a2z Radiology AI.
The foundation for better medical AI models.

"You can count on Gradient Health to deliver the data you need, no matter if it's hard to find or needed urgently. Their responsiveness and commitment to serving their customers are extraordinary."

Anna Rothweil
Clinical Data Coordinator @ RapidAI

Atlas FAQs

What is Atlas?

Atlas is Gradient Health’s medical data platform for AI developers. It helps teams discover and access deidentified medical imaging, EHR, and multimodal datasets for training, testing, validation, and regulatory evidence generation.

Who is Atlas for?

Atlas is built for medical AI developers, data science teams, foundation model teams, healthtech companies, and life sciences organizations that need high-quality medical data to develop, validate, or improve AI models.

What types of data are available through Atlas?

Atlas provides access to deidentified medical imaging data, including radiology exams, as well as multimodal medical data such as pathology reports, ophthalmology reports, and EHR-linked datasets as well as other clinical records where available.

Can Atlas support multimodal medical AI development?

Yes. Atlas can support multimodal medical AI development by helping teams access datasets that combine imaging with additional clinical context, such as EHR data, diagnoses, reports, claims, or other structured and unstructured data sources.

Can Atlas provide patient-level and longitudinal medical data?

Yes. Atlas enables developers to access deidentified patient-level datasets that include multiple exams, records, reports, or clinical events over time. This helps AI teams build models that account for disease progression, patient history, treatment pathways, follow-up imaging, and real-world clinical context, rather than relying only on single images or isolated records.

Can Atlas be used for foundation model development?

Yes. Atlas can help foundation model teams access large-scale, diverse, deidentified medical datasets for model pretraining, fine-tuning, evaluation, and validation.

How does Atlas help AI developers find the right medical data?

Atlas helps AI developers identify and build relevant datasets based on clinical, imaging, demographic, and multimodal criteria. This can reduce the time and complexity involved in finding usable medical data for AI development.

Is the data in Atlas deidentified?

Yes. Data accessed through Atlas is deidentified before it is made available to AI developers. Gradient Health applies stringent privacy and security controls to protect patient information and support responsible data use.

Where does Atlas data come from?

Atlas data comes from Gradient Health’s global network of healthcare data partners who provide deidentified medical imaging and clinical data for responsible AI development.

What can AI developers use Atlas datasets for?

AI developers can use Atlas datasets for training, testing, validation, model evaluation, foundation model development, and regulatory evidence generation.

How does Atlas help reduce bias in medical AI?

Atlas helps reduce bias by enabling access to broader, more diverse datasets across different populations, geographies, imaging devices, clinical settings, and disease presentations.

Can Atlas provide imaging data linked to EHR data?

Yes. Atlas can support access to datasets that combine medical imaging with EHR data or other clinical context, depending on the project requirements and available data.

What imaging modalities are available through Atlas?

Atlas can support access to medical imaging datasets across modalities such as CT, MRI, X-ray, ultrasound, mammography, DEXA, OCT, fundus imaging, and other imaging types where available.

How quickly can AI teams access data through Atlas?

Timelines depend on the dataset requirements, project scope, and data availability, but can be as little as 48 hours. Atlas is designed to make medical data discovery and access faster, more structured, and more repeatable.

How is Atlas different from a public medical imaging dataset?

Public datasets are often limited in size, diversity, metadata, and commercial usability. Atlas is designed to help AI teams access larger, diverse, deidentified medical datasets that can better support real-world development, validation, and regulatory needs.

Does Atlas provide regulatory-grade medical data?

Atlas can support teams building regulatory evidence by helping them access deidentified datasets that are selected for relevance, representativeness, and intended use. The specific regulatory suitability of a dataset depends on the model, claim, market, and validation plan.

How do I request access to Atlas?

AI developers and commercial teams can request an Atlas trial through the Atlas page.