NAME
| | STATE OF
INCORPORATION
|
|---|
| CISI Business Corporation | | Delaware |
| Concentra Akron, L.L.C. | | Delaware |
| Concentra Arkansas, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra Birmingham, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra Health Services, Inc. (doing business as Concentra Medical Centers) | | Nevada |
| Concentra Integrated Services, Inc. | | Massachusetts |
| Concentra Laboratory, L.L.C. (doing business as Advanced Toxicology Network) | | Delaware |
| Concentra Management Services, Inc. | | Nevada |
| Concentra New Orleans, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra Occupational Healthcare Harrisburg, L.P. (doing business as Concentra Medical Centers) | | Pennsylvania |
| Concentra Preferred Systems, Inc. | | Delaware |
| Concentra St. Louis, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra South Carolina, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra-UPMC, L.L.C (doing business as Concentra Medical Centers) | | Delaware |
| Concentra Vanderbilt, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| Concentra Winston-Salem, L.L.C. (doing business as Concentra Medical Centers) | | Delaware |
| CPS Business Corporation | | Delaware |
| CRA Managed Care of Washington, Inc. | | Washington |
| CRA-MCO, Inc. | | Nevada |
| FHM Business Corporation | | Delaware |
| First Notice Systems, Inc. | | Delaware |
| FOCUS Healthcare Management, Inc. | | Tennessee |
| HealthNetwork Systems LLC | | Delaware |
| Managed Prescription Program Joint Venture | | Arizona |
| Medical Network Systems LLC | | Delaware |
| MetraComp, Inc | | Connecticut |
| National Healthcare Resources, Inc. | | Delaware |
| OccuCenters I, L.P. (doing business as Concentra Medical Centers; Concentra) | | Texas |
| Occupational Health Ventures, L.L.C (doing business as Concentra Medical Centers) | | Pennsylvania |
| OCI Holdings, Inc. | | Nevada |
| OHC of Oklahoma, L.L.C. (doing business as Concentra Medical Centers) | | Oklahoma |
| Tucson Occupational Medicine Partnership (doing business as Concentra Medical Centers) | | Arizona |
