- Advanced Palliative and Hospice Social Work Certification (APHSW-C)
- AdVault
- Advent International
- AdventHealth Lake Wales Hospital
- Adventist Health
- Adventist Health Hospice of Mendocino County
- Advocate Aurora Enterprises
- Advocate Aurora 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