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NAICS 541611 and PSC R499 contractors

Administrative Management and General Management Consulting Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code contractor overlap.

NAICS 541611 + PSC R499

Last updated: April 17, 2026

Visible recipients

207

Mapped obligations

$127,315,211,125

State overlap

Top recipients

Visible recipients in the NAICS 541611 and PSC R499 overlap

Akima Facilities Operations LLC

Herndon, VA

Herndon, VA | 305 awards | Top agency Department of Defense | NAICS 561210

$57,197,775

Maximus INC

Mclean, VA

Mclean, VA | 5 awards | Top agency Department of Justice | NAICS 541611

$168,158,053

Avantus Federal LLC

Mc Lean, VA

Mc Lean, VA | 95 awards | Top agency Department of Defense | NAICS 541330

$557,739,976

Veterans Ez Info Inc.

San Diego, CA

San Diego, CA | 38 awards | Top agency Department of Veterans Affairs | NAICS 541512

$20,314,065

Guidehouse LLP

Mc Lean, VA

Mc Lean, VA | 134 awards | Top agency Department of State | NAICS 541611

$2,824,608,749

Tista Science And Technology Corporation

Rockville, MD

Rockville, MD | 37 awards | Top agency Department of Veterans Affairs | NAICS 541512

$173,827,993

Chickasaw Advisory Services, LLC

Norman, OK

Norman, OK | 5 awards | Top agency Department of Health and Human Services | NAICS 541519

$61,049,450

Visionary Integration Professionals LLC

Folsom, CA

Folsom, CA | 15 awards | Top agency Department of Homeland Security | NAICS 541512

$66,473,877

Sev1tech, LLC

Woodbridge, VA

Woodbridge, VA | 225 awards | Top agency Department of Defense | NAICS 541712

$162,274,781

Tetra Tech, Inc.

Pasadena, CA

Pasadena, CA | 260 awards | Top agency Department of Defense | NAICS 541330

$531,934,759

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