- Consonus
- Consonus Healthcare
- Constance Cannon
- Constellation Health Services
- Consulate
- Consulate Health Care
- Contemporary Healthcare Capital
- Contessa Health
- Continental Springs LLC
- Continuing Care Leadership Coalition
- Continuing Healthcare of Niles
- Continuing Healthcare Solutions
- Convergence Center for Policy Resolution
- Conway Lakes
- Copernicus Inc.
- CORE Analytics
- Core Health
- CoreCare
- Corizon Health
- Cornell University


