Department of the Interior NAICS 541990 and PSC R799 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- MANAGEMENT: OTHER. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 541990 · PSC R799

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$845,922,089

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541990 and PSC R799

Bearingpoint, Inc.

Dallas, TX

Dallas, TX | 5 awards | Top agency Agency for International Development | NAICS 541990

$719,378,503

The Lewin Group, Inc.

La Crosse, WI

La Crosse, WI | 82 awards | Top agency Department of Health and Human Services | NAICS 541720

$64,785,347

Koniag Management Solutions LLC

Anchorage, AK

Anchorage, AK | 184 awards | Top agency Department of Defense | NAICS 541512

$58,339,891

West 4th Strategy, LLC

Mc Lean, VA

Mc Lean, VA | 90 awards | Top agency Department of Justice | NAICS 541611

$3,418,348

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