We're a group of civic-minded technologists transforming how the federal government delivers healthcare to the American people. The Digital Service at CMS (DSAC) consists of engineers, designers, and product managers—serving our country by building and maintaining the technology underpinning our national health care programs.
Every day, millions of people in this country interact with the healthcare system. We believe these interactions should be straightforward, transparent and seamless. Whether it's looking for health insurance, making sense of medical bills, or researching nursing homes, we are working to unlock medical information and empower people with health data.
- 76M people on Medicaid & CHIP (2024)
- 67M people on Medicare (2024)
- 21M found insurance in ACA marketplace (2024)
We work to transform the U.S. healthcare system by:
- Modernizing systems
- Improving the design of healthcare experiences
- Participating in policy development
- Delivering value to the government, healthcare providers, and patients
We accomplish these goals by bringing the best and brightest talent from industry and government to CMS for a "tour of duty." By collaborating closely with dedicated CMS career civil servants, our work includes everything from creating public websites to implementing new legislation in back-office systems. Learn more about our work here.
Establish and maintain guidance, policies, practices, and talent pipelines that advance equity, build trust, and amplify impact across CMS, HHS, and Federal Open Source Ecosystems by working and sharing openly.
- Sharing is Caring: How CMS is Leading on Federal Open Source Requirements: A FormFest 2025 Profile
- GovCIO: Fed Efficiency Drive Includes Code-Sharing Law
- GovCIO: New SHARE IT Act Mandates Federal Code Sharing to Cut Software Costs
- FedScoop: Meet the Winners of the 2025 FedScoop50
- Health IT Leaders Receive Flywheel Awards from GovCIO Media & Research
- Feds Prioritize Open-Source Software Security Initiatives
- Nava Open-Source Summit: Modernizing Government with Code
- Highlighting Patient and Expert Interviews from the 2024 Health Datapalooza
- Establishing the First Open Source Program Office (OSPO) at a United States Federal Agency
- Exploring Digital Transformation at the Centers for Medicare & Medicaid Services
- PyCon May 2024
- Code for America Summit 2024
- Open Source Summit North America (OSSNA) 2024
- Biden-Harris Administration Releases End of Year Report on Open-Source Software Security Initiative
- Biden-Harris Administration Releases End of Year Report on Open-Source Software Security and Memory Safe Programming Languages
- US Digital Response Case Study: How One Federal Agency Worked to Release Open Source Software Responsibly
- Managing Federal CHAOSS at CMS.gov - CHAOSScast
- Inside CMS’ Groundbreaking Open Source Program Office
- OSPOs in Highly Regulated Environments Panel Discussion @ Open Source Summit EU 2023
- Innersource Summit 2023: Innersource to Open Source Journey in Government
- Inside CMS’ Groundbreaking Open Source Program Office
- Repodiving into Open Source at CMS.gov
- TODOGroup OSPOlogy September 2023 Meeting
- OSPOs for Good Summit 2023 @ United Nations Headquarters NYC
- FormFest: Forming an Open Source Culture in Federal Agencies
- DEFCon: CMS.gov OSPO One Year Later: Launching the Agency's First Bug Bounty
- GovCIO Federal IT Efficiency Summit
- Code For America Summit: Open Source & CMS: Making a Bigger Impact
- Program Keynote of Open Source Conference at The George Washington University OSCON
- DSAC Lightning Talk @ Nava OSS Summit 2024
- Open Source in Government: Raising the Floor and Ceiling as an Early-Career Software Engineer @ Grace Hopper Conference 2024
- Open Source Summit: Advancing IT Solutions in Federal Health and Beyond
- https://atarc.org/event/open-source-summit/
- Strengthening government engagement with the OSS community @ Code for America Summit 2024
- Repository Cohorts talk @ Open Source Summit North America 2024
- Repository Cohorts: Poster Session @ PyCon May 2024
- Repository Cohorts: How OSPOs Can Programmatically Categorize All Their Repositories
- Establishing a Repository Baseline Talk @ Open Source Summit North America 2024
- Open Source Summit EU 2023: OSPOs & Transition Paths for Regulated Environments
- TODOGroup.org Monthly Meetup: OSPOs & Transition Paths for Highly Regulated Environments
- Open Source and the Digital Service at CMS.gov, All Things Open 2022 w/Melissa Eggelston
- Also presented at: Linux Foundation Member Summit Deck hosted at https://static.sched.com/hosted_files/lfms22/0c/lfms-2022.pdf
- Celebrating 100 episodes of CHAOSScast! (Podcast)
- Managing Federal CHAOSS at CMS.gov (Podcast)
- Inside CMS’s work to become more digital and open-source
- Securing the Future of Open Source Software
- When 150M people depend on your code: Open source and government with Remy DeCausemaker
- The power and responsibility of open source at CMS.
Our work is developed as a collaboration between the United States Digital Service (USDS.gov), The Department of Health and Human Services (HHS.gov), The Digital Service at the Centers for Medicare & Medicaid Services (CMS.gov), The USDigitalResponse.org, and other Federal Open Source Community Members.
Thank you all for your support and contributions.
We adhere to the CMS Open Source Policy. If you have any questions, just shoot us an email.
Submit a vulnerability: Unfortunately, we cannot accept secure submissions via email or via GitHub Issues. Please use our website to submit vulnerabilities at https://hhs.responsibledisclosure.com. HHS maintains an acknowledgements page to recognize your efforts on behalf of the American public, but you are also welcome to submit anonymously.
For more information about our Security, Vulnerability, and Responsible Disclosure Policies, see SECURITY.md.
This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the CC0 1.0 Universal public domain dedication as indicated in LICENSE.
All contributions to this project will be released under the CC0 dedication. By submitting a pull request or issue, you are agreeing to comply with this waiver of copyright interest.
