- Ace Usa
- AEGIS
- AIG
- AIMS
- Atlantic Mutual
- BBSI
- Blue Cross/Anthem
- Blue Shield
- Broadspire
- Brightcure
- Berkshire Hathaway
- Cambridge
- Chubb Services Corp
- Church Mutual Insurance
- CNA
- Comp IQ
- Comp West
- Comp Partners
- County of Los Angeles
- Crawford & Company
- Crum & Forster
- Concentra
- Corvel
- Coventry
- Employers Direct
- Employers Compensation Insurance
- ESIS
- Fair Isaac
- First Comp Insurance
- First Health
- Focus
- Frank Gates/Royal Sun Alliance
- GAB Robbins
- Gallagher Bassett
- Gate McDonald
- GENEX
- Humana
- Intercare
Interplan Health Group
- Kroger
- LAUSD
- Majestic Insurance
- MTA
- Octagon Risk Services
- Prudent Buyer HCO
- Promesa
- Safeco Insurance Companies
- Seabright Insurance
- Sedgwick CMS
- SCIF
- Sisco
- Specialty Risk Services
- St. Paul Traveler's
- State Farm
- Sun Healthcare
- TIG
- Traveler's Insurance
- Tristar
- Zurich North American