- Massachusetts Association of Health Plans
- Massachusetts Health and Hospital Association
- Massachusetts Medical Society
- Blue Cross Blue Shield of Massachusetts
- Health Care For All, Health Law Advocates and MASSPIRG (combined letter)
- Atrius Health
- Boston Children’s Hospital
- Sturdy Memorial Hospital
- Berkshire Health
- Physician Performance LLC
- Massachusetts Orthopedic Association
- Massachusetts Society of Anesthesiologists
- Massachusetts Society of Pathologists
- Massachusetts College of Emergency Physicians
The following organizations submitted public comments regarding the establishment of an out of network default rate for health care services in Massachusetts.