- Advocate Health
- Advocate Health Care
- Advocate Hospice
- Aegis Living
- Aegis Medical Group
- Aegis Therapies
- Aerial Anthropology
- Aetna
- Aetna Better Health of Virginia
- Affinis Hospice
- Affinity Care of Manatee County
- Affinity Hospice
- Affinity Hospice Holdings
- After Cloud
- After.com
- Agape Care
- Agape Care Group
- Agape Hospice
- Agape Hospice and Palliative Care
- Ageless Innovations