- WellCare Health Insurance of Arizona
- WellEntry
- WellSky
- West Florida Hospital
- Western Reserve Care Solutions
- William Blair
- William Osler Health System
- Winthrop University
- Wisconsin Hospice & Palliative Care Collective
- Wisercare
- Yale University School of Nursing
- Yocha Dehe Wintun Nation
- Yolo Hospice
- Zeigler LinkAge Longevity Fund
- Zen Hospice Project