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Homeland Security

Office of Health Affairs

Office of Health Affairs

The Office of Health Affairs (OHA) is the Department of Homeland Security’s principal authority for all medical and health issues.

OHA experts guide DHS leaders on medical and public health issues related to national security and long-term policies. Our teams build relationships between DHS and public health communities nationwide to make sure we can work together to prepare for, respond to and recover from a crisis.

We monitor for dangerous biological agents. We analyze data for early signs of chemical and biological threats and plan responses to pandemics. We work closely with DHS professionals on the frontlines to keep them healthy and safe. And we help DHS officials coordinate medical resources and understand health and medical risks during incidents.


To advise, promote, integrate, and enable a safe and secure workforce and nation in pursuit of national health security.

View the Office of Health Affairs Organizational Chart


  • Provide expert health and medical advice to department leadership
  • Build national resilience against health incidents
  • Enhance national and department medical first responder capabilities
  • Protect the department workforce against health threats

Leadership and Organization

OHA is led by the department’s Chief Medical Officer who also serves as the Assistant Secretary of Health Affairs.

Kathryn Brinsfield, MD, MPH, Assistant Secretary for Health Affairs and Chief Medical Officer

Sally Phillips, R.N., Ph.D., Acting Principal Deputy Assistant Secretary for Health Affairs


Additional Information

Contact Information

By mail or phone:

Department of Homeland Security
Washington, D.C. 20528
Attn: Office of Health Affairs

Phone: 202-254-6479

By e-mail:

Last Published Date: August 25, 2015

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