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National Emergency Medical Services Information System (NEMSIS)

The National Emergency Medical Services Information System (NEMSIS) is a system used to collect, store, and share Emergency Medical Services (EMS) data from the U.S. States, Territories, Tribal Nations, and the District of Columbia (collectively, States). Through NEMSIS, the National Highway Traffic Safety Administration (NHTSA) develops and maintains a national standard for how patient care information resulting from prehospital EMS activations is documented. This information is voluntarily submitted to NEMSIS by State EMS Officials. NEMSIS aims to improve prehospital motor vehicle crash related patient care through the standardization, aggregation, and utilization of point of care EMS data collected by emergency services personnel. NEMSIS is administered and funded by the NHTSA’s Office of Emergency Medical Services and operated by the University of Utah NEMSIS Technical Assistance Center (NEMSIS TAC). This Privacy Impact Assessment (PIA) is being conducted to disclose to the public what Personally Identifiable Information (PII) is collected from individuals, how the information is processed, shared, disclosed, and what controls NHTSA has in place to protect the identity of such individuals.

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact privacy@dot.gov.
Last updated: Wednesday, July 2, 2025