The Connecticut EMS Tracking And Reporting System, or CEMSTARS, is overseen by OEMS. On this page you will find historical reports for EMS data, information for EMS organizations that submit EMS data to OEMS, as well as other data-related information.
Data Dictionaries
- NEMSIS V3.5 Data Dictionary
- State Data Dictionary (Dec 2025)
NEMSIS V3.5 Update Documentation
- NEMSIS V3.5 Transition Information Memo with Attachment (May 2023)
- Changes in NEMSIS V3.5 and Connecticut Dataset and Validation Rules
EMS Reporting and Submission
Click here for EMS reporting and submission information. You will need a user ID and password to access this site. If you have forgotten your user ID or password, please contact Eliza Little.
Trauma Reporting and Submission
Click here for Trauma reporting and submission information. You will need a user ID and password to access this site. If you have forgotten your user ID or password, please contact Eliza Little.
EMS Data
Click on the links below to view the OEMS Annual Data Reports.
Archived Reports:
2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000
Primary Service Area Provider Maps
2024 Assigned Primary Service Area Providers - First Responder Level
2024 Assigned Primary Service Area Providers - Basic Level
2024 Assigned Primary Service Area Providers - Paramedic Level
Trauma Data
An aggregate trauma report is available within the 2023 CT EMS Data Report (pp 71-83).