Frequently Asked Questions

1. What is NEMSIS?

Answer: NEMSIS is the official EMS Data Collection Standard for EMS agencies, it is an Information Systems Compliance Architecture which allows the transfer of data between systems, and it is the National EMS Database.

2. Why is NEMSIS needed?

Answer: We need NEMSIS for consistent definitions for elements used in EMS and pre-hospital care settings.

3. Who does NEMSIS impact?

Answer: NEMSIS impacts all EMS providers and agencies across the continental United States and associated Territories.

4. How is NEMSIS data useful?

Answer: NEMSIS data is useful for evaluating and improving patient care, improving EMS curriculums, accessing resources for natural disasters and mass casualty incidences, and much more.

5. What is Version 3?

Answer: The NEMSIS Version 3 Data Standard is the latest standard that impacts EMS agencies, States, Territories, and software developers. It involves new data elements to be collected by EMS providers, a new compliance process for software developers or States who submit data to NEMSIS, and new reporting tools for all who are interested in EMS data.

6. Who may acquire a NEMSIS account to access state level data?

Each state is allowed three active directory accounts. Those accounts are assigned to the following individuals: EMS State Data Manager, State EMS Medical Director, State EMS Director. In some circumstances, with the written permission of the State EMS Director, a fourth account may be created for a State EMSC Data Manager.

If you are not a state level EMS Official, please consider the following options for obtaining state level data:

1. Visit the Emergency Medical Services website for the state of interest and review the procedures for acquiring access to state level data.

2. Contact the state EMS office, explain the purpose for needing the data and make your request directly to the State EMS Manager. Contact information for State EMS Data Managers can be found on the NEMSIS website ( Just click on the State of interest on the National Map.

Other considerations:

Some states may offer historical data from years 2004-2016 using the NEMSIS version 2 standard which is helpful for certain research purposes.

The current NEMSIS data standard is version 3 and state level data may be available for years 2017 – to the present.

I hope you find this information helpful. Please let us know if you have additional questions.

NEMSIS Production System 2018 Maintenance / Downtime Schedule

The NEMSIS TAC has implemented a monthly production system downtime schedule for routine maintenance. Users may experience a brief delay during the downtime window.  The schedule is from Tuesday at 9:00 am through Thursday at 9:00 am Mountain Time.

Dates  listed below are for the primary maintenance days Tuesday and Wednesday.

Q1 2019

Q2 2019

Q3 2019

Q4 2019

January 8-9

April 9-10

July 9-10

October 8-9

February 12-13

May 7-8

August 13-14

November 12-13

March 12-13

June 11-12

September 10-11

December 10-11