- MHS Equities
- Miami Dade College
- Michigan Center for Rural Health
- Michigan Health Professionals
- Michigan State University
- Mid-Atlantic Permanente Medical Group
- Mid-Delta Home Health Hospice and DME
- Midland Health
- Midwest Palliative Hospice and Care Center
- miEMR
- Migration Policy Institute
- Milliman
- Mindfulness Matters
- Minidoka Memorial Hospice
- Minnesota Oncology
- Minorities for Medical Marijuana
- Miracle City Hospice
- MiraSol Health
- Mission Health Services
- Mission Healthcare