Middlesex County EMS

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Countywide Information

  • BLS = Basic Life Support (Basic EMTs)
  • INT = Intermediate Level Support
  • ALS = Advanced Life Support (Paramedics)
  • SMC: Saints Medical Center Paramedics (Formally GLEMS- Lowell)
  • Note that town's fire frequencies are listed for Private Ambulance Companies providing 911 contracts unless noted.

EMS Provider Information

Community EMS Providers Frequency Tone Notes Confirmation/Reconfirmations
Acton BLS: Fire Dept 453.1750 D074
Acton ALS:Professional EMS TG: 19824 on MSP 2016.03.25 GaryS
Arlington BLS: Fire Dept 460.6000 R 82.5 2020.01.25 ecps92
Arlington ALS: Armstrong Ambulance TG:155 T 2020.01.25 ecps92
Ashby BLS: Fire Dept 460.5000 R 91.5
Ashby ALS: Townsend Fire --- ---
Ashland BLS & ALS: Fire Dept 484.3875 R 123.0
Ayer BLS & ALS: Fire Dept 470.4250 R D065
Bedford BLS & ALS: Fire Dept 453.7375 R D125
Bedford Armstrong Ambulance (primary back up) ---
Bedford ALS: Professional EMS TG: 19824 on MSP --- 2017.03.04 GaryS
Belmont ALS & BLS: Fire Dept 482.7750 77.0 2020.01.02 ecps92
Belmont Backup ALS: Armstrong Ambulance --- ---
Belmont Backup ALS: Professional EMS TG: 19824 on MSP --- 2016.03.25 GaryS
Billerica BLS & ALS: Police Dept 483.0875 R 146.2 P15: 24/7
P150: 0800-2000 Sun-Sun
2019.01.20 ecps92
Boxborough BLS: Fire Dept 46.5000 100.0
Boxborough ALS: Professional EMS TG: 19824 on MSP --- 2016.03.25 GaryS
Burlington BLS: Fire Dept 483.3625 R 131.8
Burlington ALS: Armstrong Ambulance
Cambridge BLS: Professional Ambulance 800MHz Trunked ---
Cambridge ALS: Fire Dept 800MHz Trunked ---
Carlisle BLS: Fire Dept 33.6600 186.2 2017.07.01
Carlisle ALS: Professional EMS TG: 19824 on MSP ---
Chelmsford BLS: Trinity EMS --- --- Trinity A12-Chelmsford dedicated 911 BLS
Chelmsford ALS: SMC Paramedics 482.7750 88.5 Trinity A12-Chelmsford dedicated 911 BLS
Concord BLS: Fire Dept 483.5375 R 146.2 2019.03.19 ecps92
Concord ALS: Professional EMS TG: 19824 on MSP --- 2016.03.25 GaryS
Dracut BLS: Patriot Ambulance
ALS: SMC Paramedics
---
154.4000
---
146.2
Trinity will be assuming 9-1-1 responses as of 10/1/2016 GaryS
Dunstable BLS: Trinity EMS
ALS: SMC Paramedics
---
33.6600
---
141.3
Dispatched from Tyngsboro Base
Everett BLS & ALS: Cataldo Ambulance --- ---
Framingham BLS & ALS: Brewster Ambulance --- ---
Groton BLS: Groton EMS
ALS: Ayer Fire
ALS: Townsend Fire-EMS
155.9025 R
470.4250
453.9000 R
127.3
D065
173.8
Holliston BLS: Fire Dept 470.4750 R D065
Holliston ALS: Events EMS 463.6250 88.5 2012.11.28
Hopkinton BLS & ALS: Fire Dept 460.0875 R D065 2013.06.19 N1BHH
Hudson BLS & ALS: Patriot Ambulance --- --- Paramedic 2
Lexington BLS & ALS: Fire Dept 482.0875 R D271 2017.03.04 ecps92
Lincoln BLS: Fire Dept
ALS: Professional EMS
470.8500 R
TG: 19824 on MSP
74.4
---
2016.03.25 GaryS
Littleton BLS: Fire Dept
ALS: Professional EMS
153.8150
TG: 19824 on MSP
151.4
---
2016.03.25 GaryS
Lowell BLS: Trinity EMS
ALS: SMC Paramedics
---
154.2050 R
---
186.2
2020.01.05 ecps92
Malden BLS & ALS: Cataldo Ambulance --- ---
Marlborough BLS & ALS: Patriot Ambulance --- -- Paramedic 3: East Marlborough
Paramedic 6: West Marlborough
Maynard BLS: Fire Dept
ALS: Professional EMS
470.9000
TG: 19824 on MSP
D065
---
2016.03.25 GaryS
Medford BLS & ALS: Armstrong Ambulance --- ---
Melrose BLS & ALS: Cataldo Ambulance --- ---
Natick BLS & ALS: Fire Dept 154.2050 R 107.2
Newton BLS & ALS: Cataldo Ambulance --- ---
North Reading BLS: Fire Dept
ALS: Action Ambulance
453.9500
---
D664
---
Pepperell BLS & INT: Fire Dept
ALS: MedStar Ambulance
ALS: Townsend Fire-EMS
33.5200
---
453.9000 R
141.3
---
173.8


2014.06.07 N1BHH
Reading BLS & ALS: Fire Dept 483.4125 R 146.2
Sherborn BLS & INT: Fire Dept
ALS: AMR Ambulance
483.0875
---
114.8
---
2019.01.21 ecps92
Shirley BLS: Shirley EMS 471.5000 R D114 2017.02.03 JBolduc
Shirley ALS: Ayer Fire 470.4250 R D065 Switched to SFD UHF 471.5000(D114) for dispatch
Somerville BLS & ALS: Cataldo Ambulance --- ---
Stoneham BLS & ALS: Action Ambulance --- ---
Stow BLS & INT: Stow EMS
ALS: Patriot Ambulance
46.5000
---
100.0
---
Sudbury BLS & ALS: Fire Dept
482.7500 127.3
---
2016.03.25 GaryS
Tewksbury BLS: Fire Dept
ALS: SMC Paramedics
483.7125 R
---
100.0
---
Townsend BLS & ALS: Townsend Fire-EMS Tac 1: 453.9000 R
Tac 3: 453.7250 R
173.8
131.8
2014.06.07 N1BHH

Tyngsborough BLS: Trinity EMS
ALS: SMC Paramedics
---
484.3750
---
167.9
Trinity A14- Dedicated Tyngsboro 911 BLS
Wakefield BLS & ALS: Cataldo Ambulance 483.4375 146.2 Effective November 28, 2019 2019.12.04 GaryS
Waltham BLS & ALS: Cataldo Ambulance --- --- 2014.12.14 N1BHH
Watertown BLS & ALS: Fire Department 483.7125 131.8 Back Up: Professional Ambulance 2020.01.02 ecps92
Wayland BLS & ALS Fire Departent 482.4125 203.5 Back Up ALS Professional EMS TG: 19824 on MSP 2017.03.04 GaryS
Westford BLS & ALS Fire Dept 471.3250 R 107.2 2019.02.02 ecps92
Weston BLS: Fire Dept 154.1600 94.8 2019.08.01 N1ZYY
Weston ALS: Professional EMS MSP ALS:Professional EMS TG: 19824 on MSP
Wilmington BLS: Fire Dept 154.2875 R D025 2020.02.10 ecps92
Wilmington ALS: Action Ambulance --- ---
Winchester BLS & ALS: Fire Dept 483.6875 131.8 2020.01.02 ecps92
Woburn BLS: Fire Dept 483.6125 R 131.8 2020.01.02 ecps92
Woburn ALS: Action Ambulance --- ---



CMED Information

Middlesex EMS Agencies and Hospitals are handled by 3 different CMED's
As of 2012 Merrimack Valley CMED is completing Narrowband conversion and at the same time changing PL Tones to 123.0 Hz
As of December 31, 2012 Boston CMED has completed Narrow-banding conversion and at the same time changing PL Tones to 136.5 Hz.
It is not known as to the availability of Med 9 and Med 10 for Non Boston EMS users, as these two channels have different tones and different designations by Boston EMS

Agency Frequency/System Type Tone Use/Notes Confirmation/ReConfirmations
CMED-Med 1 463.0000
468.0000
D 123.0 Framingham Hospital 2016.02.08 ecps92
CMED-MED 12 463.0125
468.0125
D
CMED-Med 2 463.0250
468.0250
D Cambridge Hospital 2012.12.15 ecps92
CMED-MED 22 463.0375
468.0375
D 136.5 2018.12.15 ecps92
CMED-Med 3 463.0500
468.0500
D 136.5 MetroWest Medical
Winchester Hospital
2019.01.05 ecps92
CMED-MED 32 463.0625
468.0625
D
CMED-Med 4 463.0750
468.0750
D Call in Frequency
CMED-MED 42 463.0875
468.0875
D 123.0 Call in Frequency for North Shore 2013.09.07 ecps92
CMED-Med 5 463.1000
468.1000
D
CMED-MED 52 463.1125
468.1125
D 110.9 Marlboro Hospital 2019.04.12 ecps92
CMED-Med 6 463.1250
468.1250
D
CMED-MED 62 463.1375
468.1375
D
CMED-Med 7 463.1500
468.1500
D 123.0 Melrose Hospital 2014.03.22 ecps92
CMED-Med 7 463.1500
468.1500
D 123.0 Whidden Hospital 2013.09.07 ecps92
CMED-MED 72 463.1625
468.1625
D
CMED-Med 8 463.1750
468.1750
D
CMED-MED 82 463.1875
468.1875
D
CMED-Med 9 462.9500 R 123.0 Lawrence General Paramedics Disp 2019.02.16 ecps92
CMED-MED 92 462.9625
467.9625
D
CMED-Med 10 462.9750 R
CMED-MED 102 462.9875 R 123.0 Statewide Med 102
MCI Channel
Northeast CMED Interop with Municipal EMS Disp and Private EMS Disp
2012.11.28