- ABI Journal
- ABILITY
- ABILITY Network
- AbleHearts
- Abode Care Partners
- Abramson Senior Care
- Abri Health Care
- Abri Health Services
- Absolut Care
- absolute authorizations
- Absolute Pharmacy
- Abt Associates
- ACA
- Accelerated Care Plus
- AccentCare
- Accolade
- Accolade Healthcare
- Accordius Health
- Accountable Care Organizations
- Accura