The Interoperability Proving Ground has been archived and is no longer actively maintained. All information identified as archived is provided for reference, research or recordkeeping purposes.

Interoperability Proving Ground (IPG) submissions within the ONC Tech Lab are submitted by healthcare, technology and development organizations that are invested in Health IT and Interoperability and want to share, learn and collaborate with similar stakeholders in the US, and around the world.

To view all submissions, please view the IPG link located within the ONC Techlab.

eHealth Exchange

The eHealth Exchange is a rapidly growing health information network of exchange of public and private sector partners who securely share clinical information over the Internet across the US, using a standardized approach. By leveraging a common set of standards, legal agreement and governance, eHealth Exchange participants are able to securely share health information with each other, without additional customization and one-off legal agreements. Initially, the eHealth Exchange was incubated within The Office of the National Coordinator for Health Information Technology, part of the US Department of Health and Human Services, before transitioning management to The Sequoia Project, an independent 501c3 dedicated to addressing interoperability issues, in 2012. In 2018, the health information network became a separate non-profit organization.  Since then, the eHealth Exchange has become its own non-profit corporation and more than quadrupled in size to become the nation's largest public-private health information network of its kind, supporting 120 million patients across: 
- 50 states
- 4 federal agencies (DoD, VA, HHS including CMS, and SSA)
- 75%+ of US hospitals
- 70,000+ medical groups
- 3,400+ dialysis centers
- 8,300+ pharmacies
- 61 regional and state health information exchanges
Start Date
Projected End Date

Project Tags
  • C-CDA
  • CMS
  • DoD
  • eHealth Exchange
  • FHIR
  • HIE
  • HL7
  • IHE
  • interoperability
  • Nationwide Network
  • PDMP
  • policy
  • Sequoia Project
  • SSA
  • Testing
  • VHA
  • HIN
Project Point of Contact:
Project Results