Municipal Members
| Allegany County |
| Broome County |
| Cattaraugus County |
| Chautauqua County |
| Chemung County |
| City of Glens Falls |
| City of Saratoga Springs |
| City of Syracuse |
| City of Watertown |
| Cortland County |
| Dutchess County |
| Franklin County |
| Fulton County |
| Genesee County |
| Hamilton County |
| Jefferson County |
| Lewis County |
| Livingston County |
| Montgomery County |
| Onondaga County |
| Ontario County |
| Orange County |
| Orleans County |
| Oswego County |
| Rockland County |
| Saratoga County |
| Seneca County |
| St Lawrence County |
| Tioga County |
| Ulster County |
| Upstate NY Municipal Workers' Compensation Program |
| Warren County |
| Wayne County |
| Wyoming County |
| Yates County |
Non-Municipal Members
| AccessOnTime |
| Adjudications Services Group |
| AIC Companies, LLC |
| AmWINS |
| Anchor Group |
| Brookside Consultants (Strategic Claims) |
| Buckner & Kourofsky, LLP |
| By the Numbers Actuarial |
| Carisk |
| Corporate Care Management |
| Coughlin & Gerhart, LLP |
| Coventry |
| DigiStream Buffalo |
| Elite Investigative Group |
| Equian |
| Exam Works |
| Falge, LaClair, Hvozda & Cassidy, PC |
| FCS Administrators Inc |
| Future Comp (USI) |
| Gitto & Niefer, LLP |
| Habberfield Kaszycki, LLP |
| Hamberger & Weiss, LLP |
| Homelink |
| Independent Medical Evaluation Co. |
| ISG |
| KBM Management |
| Lewis Tree Service Inc |
| Midwest Employers Casualty |
| Mitchell-MCN |
| NCAComp, Inc |
| OneGroup |
| PMA Companies |
| Premier Consulting Associates |
| ProAct, Inc |
| Probe Services |
| Read Reports Medical Review Services |
| Rose & Kiernan, subsidiary of NFP |
| Russell Bond & Company, Inc. |
| SAFE LLC |
| Safety National |
| Sound Actuarial Consulting |
| Superior Medical Consultants |
| The Law Offices of Melissa A Day PLLC |
| Triad Group, LLC |
| UMC |
| UniMex Medical Exams |
| Viscardi Resources |
| Whyland Law |
| Williams & Williams |
| WJ Cox |
| Wolff, Goodrich & Goldman |