- Kaiser Oregon/Southwest Washington
- Kaiser Permanente Hawaii
- Kaiser Permanente Northern California
- Kaiser Permanente Southern California
- Kaiser Permanente Washington
- Kaleida Health
- Kansas Department of Aging and Disabilities
- Kaweah Delta Health Care District
- Kentucky Cabinet for Health and Family Services
- Kessler Institute for Rehabilitation
- Kettering Health Network
- Kindred Healthcare
- Kings Daughters Medical Center
- Kootenai Health
- KPC Group
- Kuakini Health System