- Addus HomeCare Corporation
- Addus HomeCare Partners
- Administration for Community Living
- Adoration Health
- Adoration Home Health & Hospice
- Adtalem Global Education
- Advalt Inc.
- Advanced Home Care
- Advanced Hospice Management
- Advanced Illness Partners
- Advanced Integrative Medical Science Institute
- 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