| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2021 |
Washington State Checkbook |
Graham Contracting Ltd |
$170,691,839.18 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Res-Care Of Washington Inc. |
$170,388,044.38 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Public Consulting Group Inc |
$169,894,242.03 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Res-Care Of Washington Inc. |
$168,638,913.93 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Res-Care Of Washington Inc. |
$163,277,916.13 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Molina Healthcare Of Wa Inc |
$162,765,767.18 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
King County |
$162,328,283.64 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Community Health Plan Of Wash |
$159,961,741.11 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Harborview Medical Center |
$159,017,803.87 |
Washington State Checkbook |
| 2024 |
Ecology |
King Co Natural Resources |
$157,275,187.54 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Res-Care Of Washington Inc. |
$156,602,420.07 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Res-Care Of Washington Inc. |
$154,305,887.10 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Harborview Medical Center |
$154,149,382.00 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Washington Health Benefit Exchng |
$154,011,361.24 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Des Risk Mgmt Self Insur Claim |
$152,597,500.13 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Harborview Medical Center |
$152,099,132.47 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Guy F Atkinson Const Llc |
$151,684,778.88 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Community Health Plan Of Wash |
$146,304,752.01 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Harborview Medical Center |
$143,342,538.96 |
Washington State Checkbook |
| 2024 |
Military Department |
Multicare Health System |
$142,639,249.03 |
Washington State Checkbook |
| 2024 |
Transportation |
Flatiron West Inc The Lane Const |
$142,467,727.02 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Community Health Plan Of Wash |
$141,342,473.03 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Molina Healthcare Of Wa Inc |
$141,263,230.59 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Atg Legal Svcs |
$140,233,369.53 |
Washington State Checkbook |
| 2023 |
Transportation |
Graham Contracting Ltd |
$139,652,689.59 |
Washington State Checkbook |
| 2023 |
Commerce |
Geocko Inc |
$138,589,608.95 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Washington Health Benefit Exchng |
$138,513,707.34 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Res-Care Of Washington Inc |
$136,739,118.03 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
National Council For Comm Devel |
$136,262,886.00 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Global Healthcare Product Soluti |
$135,676,436.09 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
University Of Washington |
$133,466,834.77 |
Washington State Checkbook |
| 2025 |
Children, Youth, And Families |
Des Risk Mgmt Self Insur Claim |
$133,159,508.81 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Ihealth Labs Inc |
$131,572,500.00 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Graham Contracting Ltd |
$131,572,413.51 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
North Sound Regional Support Net |
$130,842,854.67 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Atg Legal Svcs |
$130,239,119.53 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
North Sound Regional Support Net |
$129,922,755.03 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Harborview Medical Center |
$129,739,817.19 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Harborview Medical Center |
$128,858,857.42 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
University Of Washington |
$127,700,995.99 |
Washington State Checkbook |
| 2018 |
Transportation |
Guy F Atkinson Const Llc |
$125,268,505.63 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Community Health Plan Of Wash |
$122,227,492.83 |
Washington State Checkbook |
| 2023 |
Commerce |
King Co Housing & Comm Dev |
$121,239,126.65 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Res-Care Of Washington Inc. |
$118,479,694.84 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Graham Contracting Ltd |
$117,126,272.09 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
North Sound Regional Support Net |
$117,026,982.19 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Harborview Medical Center |
$116,164,844.41 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Atg Legal Svcs |
$114,470,162.61 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Des Risk Mgmt Self Insur Claim |
$114,071,140.32 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Spokane County |
$112,173,607.36 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Community Health Plan Of Wash |
$111,805,934.61 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Atg Legal Svcs |
$111,450,286.07 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
United Behavioral Health Inc |
$109,922,623.02 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
University Of Washington |
$108,084,734.83 |
Washington State Checkbook |
| 2025 |
Transportation |
Flatiron West Inc The Lane Const |
$107,574,441.09 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Us District Court Clerk |
$106,432,500.00 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Dcyf |
$105,894,482.10 |
Washington State Checkbook |
| 2023 |
Health |
King Co Public Health |
$105,401,959.78 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Guy F Atkinson Const Llc |
$105,215,181.34 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Community Health Plan Of Wash |
$103,908,331.34 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
University Of Washington |
$103,793,620.89 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Washington Health Benefit Exchng |
$103,590,736.55 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Res-Care Of Washington Inc. |
$103,129,713.83 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Community Health Plan Of Wash |
$102,927,645.40 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Community Health Plan Of Wash |
$102,887,124.91 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
United Behavioral Health Inc |
$102,590,978.03 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Spokane County |
$101,771,114.83 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Multicare Health System |
$101,599,160.97 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Des Risk Mgmt Self Insur Claim |
$101,441,231.89 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Snohomish County Human Services |
$100,465,074.79 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Dshs Fso Interagency |
$99,371,445.81 |
Washington State Checkbook |
| 2024 |
Transportation |
Kiewit Infrastructure West Co |
$98,795,105.31 |
Washington State Checkbook |
| 2024 |
Transportation |
Scarsella Bros Inc |
$97,140,782.64 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Bnsf Railway Company |
$96,465,374.39 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
King Co Finance |
$96,289,490.05 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Greater Columbia Behavioral Heal |
$96,080,690.50 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Sister's Of Providence - Provide |
$96,070,374.61 |
Washington State Checkbook |
| 2024 |
Transportation |
Graham Contracting Ltd |
$95,394,133.28 |
Washington State Checkbook |
| 2024 |
Transportation |
Vigor Marine Llc |
$94,968,221.89 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Seattle Childrens Hospital |
$94,402,778.41 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Doc Correctional Industries |
$91,924,954.65 |
Washington State Checkbook |
| 2025 |
Transportation |
Wsp Usa Inc |
$91,903,222.76 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Community Health Plan Of Wash |
$91,276,049.45 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Aci Federal |
$91,257,413.11 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Molina Healthcare Of Wa Inc |
$90,948,255.81 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Sea-Mar Community Health Center |
$89,497,881.47 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Regence Blueshield |
$88,376,561.17 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Coordinated Care Of Wa Inc |
$88,226,874.29 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Flatiron West Inc The Lane Const |
$87,451,922.77 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Multicare Health System |
$86,718,804.60 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
University Of Washington |
$86,546,893.36 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Washington Health Benefit Exchng |
$86,497,241.00 |
Washington State Checkbook |
| 2024 |
Transportation |
Wsp Usa Inc |
$86,130,180.20 |
Washington State Checkbook |
| 2017 |
Department Of Early Learning (Del) |
Dshs Economic Svs Hq |
$85,673,876.30 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Multicare Health System |
$85,518,799.18 |
Washington State Checkbook |
| 2018 |
Early Learning |
Dshs Economic Svs Hq |
$84,868,325.08 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Multicare Health System |
$84,674,585.87 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Catholic Community Services Of W |
$84,620,688.12 |
Washington State Checkbook |
| 2025 |
Transportation |
Vigor Marine Llc |
$83,593,691.70 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Seattle City Of Human Services |
$82,805,236.95 |
Washington State Checkbook |