Address:
California EMS Authority
11120 International Drive, #200
Rancho Cordova, CA 95670

Health Website:
EMS Website: California EMS
Support Website:
Support Phone:

NEMSIS V3 Implementation Tools

Please refer to the California EMS Authority website and the CEMSIS page for details related to California NEMSIS 3 requirements and resources such as suggested lists: https://www.emsa.ca.gov/CEMSIS.

State V3 Implementation Timeline

Information regarding the state transition to and implementation of the v3 Data Standard was last updated on July 25, 2023.

1. Planned start date for accepting data in 3.5.0 (v3.5.0.250403CP5) in your state: 06-01-2025
2. Planned start date for accepting data in v3.5.1 (v3.5.1.250403CP1) in your state: 01-01-2026

Submission to the Version 3 National EMS Database:

Information regarding submission to the Version 3 National EMS Database was
last updated on May 9, 2023.

• Date of First V3.5.0 Data Submission:
• Month and Year of First Record(s) in the V3.5.0 Database (Unit Notified by Dispatch Date):

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