Captain Janis McCarroll is a United States Public Health Service Officer assigned to the Department of Homeland Security (DHS) Federal Emergency Management Agency (FEMA). She is the Senior Public Health Advisor for the Office of National Exercises and Technological Hazards. She routinely represents FEMA on a spectrum of emergency management topics, primarily those involving the nation's ability to prepare for, respond to, and recover from events involving chemical and radiological hazards. CAPT McCarroll is currently focused on the national resilience mission to build and sustain capabilities in communities surrounding commercial nuclear power plants and U.S. Army chemical weapons stockpile sites.

In her previous positions, she served as the Senior Biological and Chemical Advisor for the FEMA Response Directorate and as a staff officer to the DHS Chief Medical Officer.  Prior to joining DHS, CAPT McCarroll was in the Connecticut Army National Guard and served as the Nuclear Medicine Science Officer for the 14th Weapons of Mass Destruction Civil Support Team.

CAPT McCarroll is a licensed professional engineer and holds a Master of Science degree in the Science of Disaster Response from the Indiana University of Pennsylvania. Her undergraduate degrees are from the University of Connecticut. She lives in Virginia with her family.