EX-21.1 19 dex211.txt SUBSIDIARIES OF CONCENTRA OPERATING EXHIBIT 21.1 LIST OF SUBSIDIARIES
NAME STATE OF INCORPORATION ---- ---------------------- Concentra Management Services, Inc.......................................................Nevada Concentra Preferred Systems, Inc.........................................................Delaware First Notice Systems, Inc................................................................Delaware Focus Healthcare Management, Inc.........................................................Tennessee Hillman Consulting, Inc..................................................................Nevada CRA Managed Care of Washington, Inc......................................................Washington CRA-MCO, Inc.............................................................................Nevada Drug-Free Consortium, Inc................................................................Texas Concentra Managed Care Services, Inc.....................................................Massachusetts Concentra Health Services, Inc. (doing business as Concentra Medical Centers)............Nevada Concentra Managed Care Business Trust....................................................Massachusetts OccuCenters I, L.P. (doing business as Concentra Medical Centers)........................Texas OCI Holdings, Inc.(doing business as Concentra Medical Centers)..........................Nevada Concentra Laboratory, L.L.C. (doing business as Advanced Toxicology Network).............Delaware Concentra Preferred Business Trust.......................................................Massachusetts HealthNetwork Systems, L.L.C.............................................................Delaware Medical Network Systems, LLC.............................................................Delaware Focus Healthcare Business Trust..........................................................Massachusetts MetraComp, Inc...........................................................................Connecticut NHR Michigan, Inc........................................................................Delaware NHR Washington, Inc......................................................................Delaware Concentra Iowa, L.L.C. (doing business as Concentra Medical Centers).....................Iowa Concentra Berks Lancaster, L.L.C. (doing business as Concentra Medical Centers)..........Delaware Managed Prescription Program Joint Venture...............................................Arizona Tucson Occupational Medicine Partnership (doing business as Concentra Medical Centers)........................................Arizona OHC of Oklahoma, L.L.C. (doing business as Concentra Medical Centers)....................Oklahoma Concentra Occupational Healthcare Harrisburg, L.P. (doing business as Concentra Medical Centers).........................................Pennsylvania Concentra Arkansas, L.L.C. (doing business as Concentra Medical Centers).................Delaware Concentra South Carolina, L.L.C. (doing business as Concentra Medical Centers)...........Delaware Concentra New Orleans, L.L.C. (doing business as Concentra Medical Centers)..............Delaware Concentra St. Louis, L.L.C. (doing business as Concentra Medical Centers)................Delaware Concentra Birmingham, 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 Concentra-UPMC, L.L.C. (doing business as Concentra Medical Centers).....................Delaware Occupational Health Ventures, L.L.C. (doing business as Concentra Medical Centers).......Pennsylvania