| ADVOCATE HEALTH CARE | Organization | TINLEY PARK |
| ANTHONY W. KITSLAAR, M.D. | Organization | GENEVA |
| APEX PHYSICAL THERAPY LLC | Organization | EFFINGHAM |
| APEX PHYSICAL THERAPY, LLC | Organization | EDWARDSVILLE |
| ATTUNE INC | Organization | CHICAGO |
| CONCENTRA | Organization | DARIEN |
| DMH CORPORATE HEALTH SERVICES | Organization | DECATUR |
| FIRST CHOICE OCCUPATIONAL HEALTH, LLC. | Organization | NAPERVILLE |
| FIT TO FIGHT | Organization | OREGON |
| FULLERTON OCCUPATIONAL MEDICINE & IMMEDIATE CARE SC | Organization | CHICAGO |
| FUNTASTIC INC. | Organization | DEERFIELD |
| HFIT, LLC | Organization | CHICAGO |
| IWIN (INTEGRATED WORK INJURY NETWORK) | Organization | PEORIA |
| KISHWAUKEE CORPORATE HEALTH @MOI | Organization | SYCAMORE |
| LEVIN OCCUPATIONAL THERAPY LLC | Organization | WILMETTE |
| LITTLE COMPANY OF MARY AFFILIATED SERVICES, INC | Organization | OAK LAWN |
| MEDWORKS NEW LENOX CORP | Organization | NEW LENOX |
| MIDWEST HAND CARE | Organization | JOLIET |
| NORTHBROOK OCCUPATIONAL MEDICINE CT | Organization | NORTHBROOK |
| O.T. TO YOU PEDIATRIC THERAPY SERVICES, LLC | Organization | EVANSTON |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS | Organization | BEDFORD PARK |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | BRIDGEVIEW |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | SCHAUMBURG |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | LOMBARD |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | WHEELING |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | BLOOMINGDALE |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | BRIDGEVIEW |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | MOLINE |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | LOMBARD |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | SCHILLER PARK |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | DARIEN |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | ELK GROVE VILLAGE |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | FRANKLIN PARK |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | BOLINGBROOK |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | BELLWOOD |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS PC | Organization | CHICAGO |
| OCCUPATIONAL HEALTH CENTERS OF ILLINOIS, P.C. | Organization | WAUKEGAN |
| ONE TO ONE HEALTH | Organization | NORMAL |
| PAHCS II | Organization | BLOOMINGDALE |
| PETERSON OCCUPATIONAL HEALTH SERVICES, SC | Organization | CHICAGO |
| PREMIER INJURY CARE AT SILVER CROSS LLC | Organization | NEW LENOX |
| PREMIER OCCUPATIONAL HEALTH AT SILVER CROSS LLC | Organization | NEW LENOX |
| PREMISE HEALTH OF ILLINOIS MEDICAL, PC | Organization | CHICAGO |
| PRESENCE AMBULATORY SERVICES | Organization | NORRIDGE |
| PRESENCE AMBULATORY SERVICES | Organization | ELMWOOD PARK |
| PRESENCE AMBULATORY SERVICES | Organization | DES PLAINES |
| RESURRECTION SERVICES | Organization | DES PLAINES |
| RESURRECTION SERVICES | Organization | ELMWOOD PARK |
| RIVERSIDE CORPORATE HEALTH SERVICES | Organization | BRADLEY |
| SUBURBAN PEDIATRIC THERAPIES | Organization | AURORA |
| SUMMIT REHABILITATION CENTER, PC | Organization | OAK BROOK |
| TYLER MEDICAL SERVICES | Organization | ST CHARLES |
| U. S. MEDGROUP, P. A. DBA OCCSPECIALISTS P. C. (IL) | Organization | LOMBARD |
| WOODLAKE OCCUPATIONAL HEALTH LLC | Organization | MELROSE PARK |
| WORKRIGHT OCCUPATIONAL HEALTH SERVICES SC | Organization | LA GRANGE HIGHLANDS |