- Altarum
- Alternate Health Solutions Network
- Alternate Solutions Health Network
- Altru Health System
- Amazon
- Amedisys
- American Academy of Hospice
- American Academy of Hospice and Palliative Medicine
- American Cancer Society Cancer Action Network
- American Health Care Association
- American Healthcare Capital
- American Heart Association
- American Journal of Hospice and Palliative Medicine
- American Medical Association
- American Network of Community Options and Resources
- American Well (AmWell)
- Americare
- AMR Care Group
- Andrew Barmes Builders
- Androscoggin Home Health and Hospice
