- American Academy of Hospice
- American Academy of Hospice and Palliative Medicine
- American Cancer Society Cancer Action Network
- American Heart Association
- American Medical Association
- American Network of Community Options and Resources
- Americare
- Andrew Barmes Builders
- Androscoggin Home Health and Hospice
- Angels Care Home Health
- Angels Care Hospice
- AngMar Medical Holdings
- Anthem
- Apex Hospice
- Apex Hospice and Palliative Care
- Appalachian Hospice Care
- Ariadne Labs
- Arizona End-of-Life Care Partnership
- Arizona Hospital and Health Association
- Arizona Select Hospice
