California EMS Information System (CEMSIS)

The California Emergency Medical Services Information System (CEMSIS) is a demonstration project for improving EMS data across California. CEMSIS offers a secure, centralized data system for collecting data about individual emergency medical service requests, patients treated at hospitals, and EMS provider organizations. CEMSIS uses the universal standard for how patient care information resulting from an emergency 9-1-1 call for assistance is collected called the National Emergency Medical Services Information System (NEMSIS). Health and Safety Code, Section 1797.227 requires the most current version of NEMSIS to be used to collect EMS data. 


What can CEMSIS do today?

CEMSIS data is used to study variations in local data quality and local capacity for health information exchange. When fully operational with 100% LEMSA and local participation, it is estimated that CEMSIS will catalogue over 5 million EMS events per year. EMSA will use the data to develop and coordinate high quality emergency medical care in California through activities such as:

  • Healthcare quality programs which monitor patient care outcomes
  • Agency collaboration across jurisdictional boundaries
  • Local, regional, and state-level public health surveillance
  • Increased public awareness of emergency medical services in California
NEMSIS

NEMSIS

Press Release: California is the First State to Transmit EMS Data to National Database

To improve local data quality and prepare California EMS for health information exchange, EMSA and local agencies adopted new data standards known as NEMSIS Version 3. 

The NEMSIS Version 3.4 data standards provide a set of tools that EMS professionals can use to integrate EMS patient care data with electronic medical records at hospitals. This will allow EMS providers, hospitals, and government agencies to exchange patient information securely and in real time – leading to better patient outcomes and a smarter system of care

The current version of NEMSIS is version 3.4 effective January 1, 2017.

CEMSIS Participation

There are a total of 33 LEMSAs within the State of California. Of those 33 LEMSAs, 28 voluntarily submit data into CEMSIS. There are two different statuses:

  • LEMSAs who participate and submit some form of v3.4 data into CEMSIS, and 
  • LEMSAs who are currently in the testing stage to submit v3.4 data into CEMSIS

LEMSAs Participating

Quarter Started and Year

Alameda County EMS Agency

First Quarter of 2017

Central California EMS Agency

First Quarter of 2017

Coastal Valleys EMS Agency

First Quarter of 2017

Contra Costa County EMS Agency

Second Quarter of 2017

El Dorado County EMS Agency

Fourth Quarter of 2017

Inland Counties Emergency Medical Agency

First Quarter of 2017

Kern County EMS Agency

Second Quarter of 2017

Marin County EMS Agency

Third Quarter of 2018

Merced County EMS Agency

Second Quarter of 2018

Monterey County EMS Agency

Second Quarter of 2017

Mountain Valley EMS Agency

First Quarter of 2017

Napa County EMS Agency

Third Quarter of 2017

North Coast EMS Agency

First Quarter of 2017

Northern California EMS Agency

First Quarter of 2017

Orange County EMS Agency

Third Quarter of 2017

Riverside County EMS Agency

Second Quarter of 2017

Sacramento County EMS Agency

First Quarter of 2017

Santa Barbara County EMS Agency

Second Quarter of 2018

San Benito County EMS Agency

First Quarter of 2017

San Diego County EMS Agency

First Quarter of 2018

San Francisco County EMS Agency

First Quarter of 2017

San Joaquin County EMS Agency

Third Quarter of 2017

San Luis Obispo County EMS Agency

Second Quarter of 2017

San Mateo County EMS Agency

Second Quarter of 2018

Santa Clara County EMS Agency

Second Quarter of 2017

Santa Cruz County EMS Agency

Second Quarter of 2017

Sierra-Sacramento Valley EMS Agency

First Quarter of 2017

Solano County EMS Agency

Second Quarter of 2018

Tuolumne County EMS Agency

Second Quarter of 2018

Ventura County EMS Agency

First Quarter of 2017

Yolo County EMS Agency

First Quarter of 2017

 

LEMSAs Testing

Start Date

Imperial County EMS Agency

First Quarter of 2019

Los Angeles County EMS Agency

First Quarter of 2019

 

CEMSIS Updates and FAQ
  • NEMSIS 3 Workshop Power Point Presentation [PPT]
  • Major Issues and FAQ [PDF]
  • Notes from September 15, 2015 workshop in San Bernardino, CA [Word]
  • Notes from September 17, 2015 workshop in Rancho Cordova, CA [Word]
CEMSIS Resources

The CEMSIS value lists are resources for provider agencies and LEMSAs. The Executive Data Advisory Group helped shaped the California specific pick lists for Cause of Injury, Symptoms, Provider Primary and Secondary Impression and Location Type.

  • CEMSIS Value Lists:
    • 201 – CEMSIS Provider Agency List [Excel]: Updated 02/08/2019
    • 203 – CEMSIS Facility List
    • 209 – CEMSIS Cause of Injury List [Excel]: Updated 08/22/2016
    • 210 – CEMSIS Symptom List [Excel]: Updated 08/22/2016
    • 211 – CEMSIS Provider Primary and Secondary Impression List [Excel]: Updated 08/22/2016
    • 213 – CEMSIS Location Type List [Excel]: Updated 08/22/2016
Grant Funding
Documents
  • 2/26/2014: Local EMS Agency HIPAA Responsibilities [PDF]
  • 1/5/2016: New State EMS Data System Requirements [PDF]
  • 6/2/2016: EMSA Strategy for Data Collection, Evaluation, and Quality [PDF]
  • 7/18/2017: Adoption of Data De-Identification Guidelines by the EMS Authority [PDF]
  • NEMSIS 3.4 Transition Webinar; June 27, 2016 [PDF]
Data Use Agreement (DUA)
  • External Entities Part 1 [PDF]
  • External Entities Part 2 [PDF]
  • LEMSA Part 1 [PDF]
  • LEMSA Part 2 [PDF]
Reports

For Questions Contact

Adrienne Kim
CEMSIS Program Coordinator
Adrienne.Kim@emsa.ca.gov
916-322-4336 Ext. 742