About Gradient Health

We’re a team of innovators passionate about the power of data to improve human health at a global scale. For AI developers, that means faster access to affordable, diverse datasets that accelerate training, improve algorithm quality, and smooth the path to regulatory approval. For our data partners, it means reducing administrative burden, ensuring their patients are represented in cutting-edge research, and sharing in the value their data helps create.

What we do

Gradient Health's mission is to create a more equitable future for healthcare by making diverse and organized medical data instantly available for research.

Gradient provides instant access to millions of de-identified medical imaging studies across modalities, paired with rich metadata. By removing barriers to sourcing data, we help:

  • AI developers train and validate models at scale, reduce bias, and get to market faster.
  • Data partners unlock the value of their data while keeping patient privacy, representation, and compliance front and center.

Why it matters

Most AI models today are trained on narrow datasets from a handful of academic hospitals. That leaves entire patient populations underrepresented and limits clinical impact. Gradient changes that by connecting developers with imaging data that better reflects the real world, patients from community hospitals, rural clinics, and diverse care settings. When AI is trained on data that looks like humanity, it performs better, saves more lives, and builds trust in the technology.

Our Story

Gradient Health was founded on the belief that data bottlenecks were holding back progress in medical AI. Developers were spending more time negotiating access than building models, while hospitals struggled with the administrative load of sharing data.

We built Atlas, a platform designed to solve both sides of the problem: fast, transparent, and compliant access for developers, and a simple, revenue-sharing model for data partners. Today, Gradient works with healthcare systems, AI companies, and researchers worldwide to unlock data that powers progress.

Our values

Total ownership

We own things end-to-end — theres no such thing as "not my problem".

Fierceness and grit

We roll up our sleeves and work hard. We play to win.

Highly responsive

We reply quickly. If we know the answer, we give it. If not, we find it.

Infectious optimism

We celebrate wins and learn from losses without dwelling on them.

Kindness in all ways

We empower everyone to succeed and show gratitude when they do.

Radical candor

We confront problems head-on with kindness, in service of our mission and each other.

Board of Directors

Jay Goss

Jay Goss

Board Member

Matt Bailey

Matt Bailey

Board Member

Satish Tadikonda

Satish Tadikonda

Board Member

Shana Barghouti

Shana Barghouti

Board Member

Executive Leadership

Benji Meltzer

Benji Meltzer

Chief Data Officer

Joshua Miller

Joshua Miller

Chief Executive Officer

Ouwen Huang

Ouwen Huang

Chief Scientific Officer

Pia Spratley

Pia Spratley

Chief Product Officer

Rod Greco

Rod Greco

Chief Revenue Officer

Our Team

Alceu Lima

Alceu Lima

Software Engineer

Ally Han

Ally Han

Business Operations Manager

Cal Nightingale

Cal Nightingale

Software Engineer

Chang Liu

Chang Liu

Software Engineer

Chengke Tang

Chengke Tang

Software Engineer

Eris Gao

Eris Gao

Software Engineer

Jocsã Naves

Jocsã Naves

Marketing Consultant

Lucas Alves

Lucas Alves

Director of Sales

Lucas Paz

Lucas Paz

Dir. Data Partnerships

Rachel Bond

Rachel Bond

Director of Large Accounts

Rafael Missé

Rafael Missé

Head of Data

Raphael Martins

Raphael Martins

Product Manager

Ryan Thompson

Ryan Thompson

Technical Lead

Taina Moraes

Taina Moraes

Sales Liason

Advisors

Flavio Lanes

Flavio Lanes

Advisor

Gunnar Schaefer

Gunnar Schaefer

Advisor

Karen Seagraves

Karen Seagraves

Advisor

Satish Tadikonda

Satish Tadikonda

Advisor

Join our team

Work with us.