- Signature Healthcare at Home
- Signature Healthcare LLC
- Signature Hospice Home Health and Home Care
- Signify Community
- Signify Health
- Silicon Valley Bank
- Silver Lining Home Healthcare
- Silver Palm Capital Healthcare Partners
- Silver State Accountable Care Organization LLC
- Silverado
- Silvernest
- silversneakers
- Silversphere
- Simione
- Simione Healthcare Consultants
- SimiTree
- SimiTree Healthcare Consulting
- Simplura Health Group
- Simply Home Health
- Simply Home Healthcare LLC