EX-21.1 4 dex211.htm SUBSIDIARIES OF CONCENTRA OPERATING Subsidiaries of Concentra Operating

EXHIBIT 21.1

 

LIST OF SUBSIDIARIES

 

NAME

   

STATE OF

INCORPORATION

Concentra Akron, L.L.C.

    Delaware

Concentra Arkansas, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra Birmingham, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra Health Services, Inc. (d/b/a Concentra Medical Centers)

    Nevada

Concentra Integrated Services, Inc. (d/b/a Concentra Medical Examinations)

    Massachusetts

Concentra Laboratory, L.L.C. (d/b/a Advanced Toxicology Network)

    Delaware

Concentra Managed Care Business Trust

    Massachusetts

Concentra Management Services, Inc.

    Nevada

Concentra New Orleans, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra Occupational Healthcare Harrisburg, L.P.

(d/b/a Concentra Medical Centers)

    Pennsylvania

Concentra Preferred Business Trust

    Massachusetts

Concentra Preferred Systems, Inc.

    Delaware

Concentra South Carolina, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra St. Louis, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra Vanderbilt, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra Winston-Salem, L.L.C. (d/b/a Concentra Medical Centers)

    Delaware

Concentra-UPMC, L.L.C (d/b/a Concentra Medical Centers)

    Delaware

CRA Managed Care of Washington, Inc. (d/b/a Concentra Integrated Services)

    Washington

CRA-MCO, Inc.

    Nevada

First Notice Systems, Inc.

    Delaware

Focus Healthcare Business Trust

    Massachusetts

Focus Healthcare Management, Inc. (d/b/a Concentra Network Services)

    Tennessee

HealthNetwork Systems LLC

    Delaware

Managed Prescription Program Joint Venture

    Arizona

Medical Network Systems LLC

    Delaware

MetraComp, Inc.

    Connecticut

National Healthcare Resources, Inc.

    Delaware

NHR Washington, Inc.

    Delaware

OccuCenters I, L.P. (d/b/a Concentra Medical Centers; Concentra)

    Texas

Occupational Health Ventures, L.L.C (d/b/a Concentra Medical Centers)

    Pennsylvania

OCI Holdings, Inc.(d/b/a Concentra Medical Centers)

    Nevada

OHC of Oklahoma, L.L.C. (d/b/a Concentra Medical Centers)

    Oklahoma

OnSite OccMed, P.A.

    Texas

Tucson Occupational Medicine Partnership

(d/b/a Concentra Medical Centers)

    Arizona