NAICS 541690 and PSC R499 contractors

Other Scientific and Technical Consulting Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code contractor overlap.

NAICS 541690 + PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$12,139,438,432

State overlap

Top recipients

Visible recipients in the NAICS 541690 and PSC R499 overlap

Kawerak, Inc.

Nome, AK

Nome, AK | 100 awards | Top agency Department of the Interior | NAICS 541690

$540,130

Tatitlek Technologies, LLC

Anchorage, AK

Anchorage, AK | 238 awards | Top agency Department of State | NAICS 561210

$256,567,506

Acumen LLC

Burlingame, CA

Burlingame, CA | 73 awards | Top agency Department of Health and Human Services | NAICS 541611

$940,133,391

Janus Research Group, LLC

Evans, GA

Evans, GA | 103 awards | Top agency General Services Administration | NAICS 611430

$176,511,341

Akima Systems Engineering LLC

Herndon, VA

Herndon, VA | 233 awards | Top agency Department of Defense | NAICS 541512

$40,347,084

Tmf Health Quality Institute

Austin, TX

Austin, TX | 20 awards | Top agency Department of Health and Human Services | NAICS 541618

$15,292,364

Noresco, LLC

Westborough, MA

Westborough, MA | 81 awards | Top agency Department of Defense | NAICS 541330

$377,723,790

Hdr Environmental, Operations And Construction, Inc.

Englewood, CO

Englewood, CO | 109 awards | Top agency Department of Defense | NAICS 541330

$335,578,574

Yurok Tribe

Klamath, CA

Klamath, CA | 135 awards | Top agency Department of the Interior | NAICS 238910

$439,588

Goldbelt Professional Services, LLC

Chesapeake, VA

Chesapeake, VA | 75 awards | Top agency Department of Health and Human Services | NAICS 541611

$103,743,037

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