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Overview
Emergency Medical Services (EMS) Regions are designated by the Massachusetts Department of Public Health Office of Emergency Medical Services (OEMS). Grouped by municipality, each EMS region is administered by a regional office dedicated to promoting patient care by coordinating communication among and enhancing the efficiency of providers of EMS including ambulance services, first responders and hospital emergency departments. Educational and training programs are also offered.
To produce this layer representing the EMS regions, MassGIS received regional shapefiles from OEMS which were merged and then dissolved on TOWN_ID using ArcGIS software. MassGIS created the arc feature class and defined the attribute tables.
This STATE library layer is named REG_EMS. The ArcSDE layers and Data Viewer shapefiles are named REGEMS_POLY and REGEMS_ARC.
The polygon feature class was updated in August 2021 to be based on the Survey Towns Boundaries (previously based on the USGS-based town boundaries).
Attributes
The polygon attribute table contains the following items:
| Item | Width/Type | Description |
| NAME | 50 / C | EMS Region Name |
| WEB_SITE | 50 / C | EMS Region Web site |
| REGION | 1 / I | EMS Region Number (1-5) |
The arc attribute table contains the following items:
| Item | Width/Type | Description |
| OUTLINE | 1 / I | Boundary type: 9 = EMS Region boundary 1 = State outline 4 = Coastline |
RELATED DATABASE TABLE
The table REGEMS_POLY_TOWNS (REG_EMS.TOWNS in coverage format) identifies which towns fall within each EMS region. Items include:
| Item | Width/Type | Description |
| TOWN_ID | 3 / I | Municipality ID, from Municipalities layer |
| TOWN | 21 / C | Municipality name, from Municipalities layer |
| REGION | 8 / C | EMS Region Number (1-5) |
Maintenance
The Massachusetts Department of Public Health Office of Emergency Medical Services will provide any updates to MassGIS.
Updated in April 2022 to reflect recent edits to the Municipalities layers.