Loading…

Search every US federal contract opportunity on SAM.gov, and draft winning RFP responses with AI.

Solutions

Contract search AI proposal writing Bid / no-bid scoring Buyer & market intelligence Forecast & recompetes Awards & competitors Teaming & partner network State & local contracts Pipeline & CRM

Find Contracts

All contracts Closing soon Recently posted Highest value Buyer Intelligence What’s coming up Who’s winning (awards)8(a) set-asides WOSB set-asides SDVOSB set-asides HUBZone set-asides

Agency opportunities

DoD contracts VA contracts HHS contracts DHS contracts DOE contracts GSA contracts DOT contracts NASA contracts

Tools & Pricing

AI Opportunity Scan Contract Pricing Benchmark Competitor & Incumbent Lookup Company Award Profile GovCon Market Explorer Supplier & Teaming Finder AI Pursuit Analyzer NAICS Code Lookup Set-Aside Eligibility Small Business Size Standard Acquisition Threshold Guide Bid / No-Bid Scorecard Bid ROI Calculator CMMC 2.0 / SPRS Estimator HUBZone Eligibility Checker Plans & pricing

Learn

Market Reports Blog Answers (Q&A)Resources Glossary A–Z Guides Compare tools 2026 data report

Company

About Contact sales Security & trust Careers WinAContract UK BidWriter UK GovCon — AI proposals eSourcing Data Privacy Terms Refunds

Services & network

Bid & capture consulting Registration & certifications GovCon training Supplier network Teaming & partnering Data & API Reports store

WinAContract is US-based and US-hosted — AI federal contract search and proposal writing software for US government contractors. Operated by eSourcing Data Ltd.

© 2026 eSourcing Data Ltd · info@winacontract.com

NAICS 621399

Top contractors in NAICS 621399

The 42 contractors with tracked federal awards in NAICS 621399, totalling $76,692,423. Ranked by award value.

See live NAICS 621399 opportunities →All contractors

1FOUR WINDS STAFFING LLC$13,317,8314 awards
2JVRX LLC$10,161,2151 awards
3WARE RIVER CONSULTING LLC$8,502,3194 awards
4MAAT ENTERPRISES INC$6,662,2161 awards
5WANDER STAFFING LLC$5,413,5013 awards
6SUNCOAST PHYSICS LLC$4,623,2531 awards
7PHOTON PHYSICS SERVICES$3,522,3781 awards
8SHARESTAFF LLC$2,217,3142 awards
9CHLOETA HOLDINGS LLC$2,011,2821 awards
10SEQUOYAH STAFFING AGENCY, LLC$1,933,0352 awards
11TESTUDO LOGISTICS LLC$1,924,9322 awards
12ONE STOP RECRUITING LLC$1,648,5831 awards
13LOYAL SOURCE GOVERNMENT SERVICES LLC$1,340,0701 awards
14BAY AREA ANESTHESIA LLC$1,264,4122 awards
15DUKE UNIVERSITY$1,229,4542 awards
16AKICITA CYBER LLC$1,203,1392 awards
17PRAIRIE BAND HEALTH SERVICES INC$1,086,8001 awards
18PRIME PHYSICIANS PLLC$1,085,8403 awards
19NATIVEARC, LLC$1,044,1631 awards
20INTEGRATED MEDICAL SOLUTIONS, LLC$902,2981 awards
21MEI SERVICES, INC.$796,6821 awards
22ROBISON MEDICAL RESOURCE GROUP LLC$566,1721 awards
23TECH62 INC$476,5181 awards
24GOLDEN GATE PERFUSION, INC.$449,4881 awards
25AB STAFFING SOLUTIONS LLC$430,6501 awards
26SIGHTPATH MEDICAL LLC$334,8001 awards
27SOPOR, LLC$294,5451 awards
28EM SPORTS SOLUTIONS LLC$289,5592 awards
29THE GLOCOMS GROUP INC$274,6721 awards
30NUVASIVE CLINICAL SERVICES MONITORING, INC.$231,0001 awards
31AMG COMPANY, INC.$218,4001 awards
32PRIME TRI PROVIDERS LLC$184,2401 awards
33EVT, INC.$177,4301 awards
34WAPITI MEDICAL CORPORATION$158,2921 awards
35THOMASON FAMILY EYE CARE, LLC$145,5001 awards
36BLISS PHARMACY SERVICES LLC$132,6371 awards
37INDIAN HEALTH BOARD OF MINNEAPOLIS, INC.$115,3851 awards
38PHARMERICA CORP$112,6511 awards
39RISEN VIDEO PRODUCTION, LLC$103,1001 awards
40BH & HCP JV, LLC$61,3601 awards
41PICCPROS LLC$43,2051 awards
42NING SOLUTIONS, INC.$2,1031 awards