- A.G. Rhodes
- Aaron Manor Rehabilitation and Nursing Center
- AARP
- AARP Foundation
- AARP Minnesota
- AB Asset Management LLC
- Abbott
- Abbott Laboratories
- ABC News
- ABC1857 LLC
- Aberdeen News
- ABILITY
- Abramson Senior Care
- Abri Health Care
- Absolut Care
- Absolute Pharmacy
- ACA
- Accelerated Care Plus
- Accordius Health
- Accountable Care Organizations