- Masonic Nursing Home Inc.
- Massachusetts Assistance Centers
- Massachusetts College of Pharmacy and HS
- Massachusetts Convention Center Authority
- Massachusetts Department of Public Health
- Massachusetts Department of Public Health, EMSC
- Massachusetts General Hospital
- Massachusetts League of Community Health Centers, Inc.
- MelroseWakefield Hospital
- Mercy Medical Center
- Mery Medical Center
- MetroWest Medical Center - Framingham and Natick
- MetroWest Medical Center - Leonard Morse Hospital
- Milford Regional Medical Center
- Milton Hospital
- Modus Media International
- Monson Developmental Center
- Morton Hospital
- National Fire Protection Association
- New England Medical Center
- New England Organ Bank
- Newell Brands
- Newton Wellsley Hospital
- Nine Zero, Boston, MA
- NMT Medical
- Noble Hospital
- Northeastern University, School of Nursing
- Norwood Hospital - Steward Health Care
- Notox, USA
- NSMC Salem Hospital
- Nutter McClennen and Fish LLP
- Omni Sonics
- One United Bank
- OPUS Design Group
- Oscient Pharmaceuticals
- Outcome
- Palmer and Dodge LLP
- Parexel
- Passkey
- Philips Medical Systems
- PHT
- Polaris Group
- Providence Behavioral Health Hospital
- Radant Technologies
- Randall Library
- Raytheon
- Reach Community Health Foundation
- Reach New Heights, Inc.
- Reed Landing
- Regis College