- All County Home Care and Hospice
- Alleo Health
- Alleo Health System
- Allina Health
- Almost Family
- Alpha Nursing
- Alternate Health Solutions Network
- Alternate Solutions Health Network
- Amazon
- Amedisys
- American Academy of Hospice
- American Cancer Society Cancer Action Network
- American Medical Association
- Androscoggin Home Health and Hospice
- Angels Care Home Health
- Angels Care Hospice
- AngMar Medical Holdings
- Anthem
- Apex Hospice and Palliative Care
- Ariadne Labs
