| 1 | HUMANA GOVERNMENT BUSINESS INC | $80,023,948,080 | 3 | $26,674,649,360 | Feb 01, 2023 | Department of Defense |
| 2 | OPTUM PUBLIC SECTOR SOLUTIONS, INC. | $65,128,860,756 | 105 | $620,274,864 | Jul 01, 2026 | Department of Veterans Af… |
| 3 | HEALTH NET FEDERAL SERVICES, LLC | $42,897,598,009 | 2 | $21,448,799,005 | Aug 01, 2016 | Department of Defense |
| 4 | TRIWEST HEALTHCARE ALLIANCE CORP | $37,379,963,713 | 37 | $1,010,269,290 | Sep 01, 2026 | Department of Veterans Af… |
| 5 | UNITEDHEALTH MILITARY & VETERANS SERVICES, … | $13,145,560,374 | 1 | $13,145,560,374 | Mar 20, 2012 | Department of Defense |
| 6 | THE JOHNS HOPKINS MEDICAL SERVICES CORPORAT… | $5,660,644,458 | 2 | $2,830,322,229 | Oct 01, 2023 | Department of Defense |
| 7 | EXPRESS SCRIPTS INC | $5,214,043,252 | 11 | $474,003,932 | Oct 26, 2022 | Department of Defense |
| 8 | MARTINS POINT HEALTH CARE INC | $4,881,905,184 | 2 | $2,440,952,592 | Oct 01, 2023 | Department of Defense |
| 9 | NOVITAS SOLUTIONS, INC. | $3,143,283,435 | 5 | $628,656,687 | Jul 01, 2026 | Department of Health and … |
| 10 | UNITED CONCORDIA COMPANIES, INC. | $3,079,971,886 | 14 | $219,997,992 | Feb 25, 2026 | Department of Defense |
| 11 | WELLPOINT FEDERAL SOLUTIONS, INC. | $2,616,343,916 | 4 | $654,085,979 | Jan 01, 2022 | Department of Health and … |
| 12 | PALMETTO GBA, LLC | $2,532,908,703 | 4 | $633,227,176 | Sep 01, 2024 | Department of Health and … |
