NCATS National COVID Cohort Collaborative (N3C) Data Enclave


The NIH’s NCATS National COVID Cohort Collaborative (N3C) Data Enclave represents one of the largest, most secure clinical data resources for accelerating research on COVID-19. It also includes a powerful analytics platform and tool set for online discovery, visualization and collaboration.

Researchers studying COVID-19 now are able to access an innovative new analytics platform that contains clinical data from the electronic health records of people who were tested for the novel coronavirus or who have had related symptoms. Mount Sinai has in place a data use agreement with NCATS which is the initial step in order to access the data.

The N3C is a partnership among the NCATS-supported Clinical and Translational Science Awards (CTSA) Program hubs and the National Center for Data to Health (CD2H).


Interested researchers will need to register with N3C. The N3C Data Enclave site provides more information about the process and requirements, including data security training for data access.


N3C is holding a 2-part virtual orientation to learn how to use the N3C Data Enclave.

The sessions alternate week by week for ongoing access. To view upcoming sessions, see N3C Data Enclave Training Registration.

Session A – Recommended before attending Session B
This session is for those who want to learn about N3C, as well as how to engage with project teams and access the data.
Learning objectives:

  • Provide a general overview of N3C, including goals, organization, and community resources such as Domain Teams and Data Liaisons.
  • Introduce the 3 data tiers available and important considerations for research driven by the data harmonization process.
  • Discuss resources for training and support.

To register and learn more – N3C Data Enclave Training Registration

N3C YouTube Channel – Recordings are available to the N3C community on the CD2H YouTube channel.

N3C Office Hours – Thursdays

Investigators can also attend office hours with a CMS data subject matter expert on Thursdays at 10am PT/ 1pm ET, registration information can be found at