- California Health Care Foundation
- California Health Report
- California Hospice and Palliative Care Association
- California Hospice Network
- California Pacific Medical Center
- California State University Shelley Institute for Palliative Care
- Call9
- Calvary Hospice
- Calvary Hospital
- Calvert Home Health
- Calvert Hospice
- Cambia Health Foundation
- Cambia Health Solutions
- Cambia Palliative Care Center of Excellence
- Cambridge University Press
- Camellia Healthcare
- Canadian Home Care Association
- CancerNetwork
- Canon Healthcare
- Canon Hospice