| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2016 |
Social And Health Services |
Seattle City Of Human Services |
$32,814,429.22 |
Washington State Checkbook |
| 2020 |
Children, Youth, And Families |
Puget Sound Educ Svc Dist 121 |
$32,800,021.38 |
Washington State Checkbook |
| 2025 |
Transportation |
Graham Contracting Ltd |
$32,757,749.73 |
Washington State Checkbook |
| 2023 |
Transportation |
Hdr Engineering Inc |
$32,756,414.38 |
Washington State Checkbook |
| 2018 |
Health |
Merck Sharp And Dohme Corp |
$32,752,417.85 |
Washington State Checkbook |
| 2023 |
Transportation |
Jacobs Engineering Group Inc |
$32,639,373.40 |
Washington State Checkbook |
| 2020 |
Health |
Merck Sharp And Dohme Corp |
$32,601,008.48 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Rainier Inc |
$32,560,862.82 |
Washington State Checkbook |
| 2019 |
Health Care Authority |
Yakima Valley Farm Workers Clini |
$32,536,464.68 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Addus Healthcare Inc. |
$32,478,536.58 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Kyndryl Inc |
$32,444,436.80 |
Washington State Checkbook |
| 2025 |
Natural Resources |
Aero-Flite Inc |
$32,437,378.83 |
Washington State Checkbook |
| 2024 |
Transportation |
Aecon Pacific Northwest Inc |
$32,421,392.36 |
Washington State Checkbook |
| 2022 |
Civil Legal Aid |
Northwest Justice Project |
$32,402,246.29 |
Washington State Checkbook |
| 2025 |
Corrections |
Cardinal Health 130 Llc |
$32,352,328.01 |
Washington State Checkbook |
| 2022 |
Health Care Authority |
Stillaguamish Tribe Of Indians |
$32,268,442.59 |
Washington State Checkbook |
| 2019 |
Transportation |
Scarsella Bros Inc |
$32,243,496.09 |
Washington State Checkbook |
| 2025 |
Ecology |
King County |
$32,150,055.55 |
Washington State Checkbook |
| 2022 |
Public Schools |
Seattle School Dist 1 |
$32,061,565.37 |
Washington State Checkbook |
| 2018 |
Transportation |
Central Puget Sound Transit Auth |
$32,057,680.67 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Sails Washington Inc |
$32,017,420.96 |
Washington State Checkbook |
| 2016 |
Health |
Merck Sharp And Dohme Corp |
$32,014,139.50 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
International Business Machines |
$31,993,238.87 |
Washington State Checkbook |
| 2024 |
Transportation |
Kraemer North America Llc |
$31,911,190.70 |
Washington State Checkbook |
| 2020 |
Military Department |
Uw-Financial Accounting |
$31,890,041.63 |
Washington State Checkbook |
| 2024 |
Deaf And Hard Of Hearing Youth |
Skanska Usa Building Inc |
$31,879,827.00 |
Washington State Checkbook |
| 2024 |
Children, Youth, And Families |
Snohomish County Human Services |
$31,868,478.10 |
Washington State Checkbook |
| 2023 |
Children, Youth, And Families |
Snohomish County Human Services |
$31,779,926.63 |
Washington State Checkbook |
| 2023 |
Recreation And Conservation Office |
Dfw General Account |
$31,735,314.19 |
Washington State Checkbook |
| 2023 |
Military Department |
Dshs Fso Interagency |
$31,601,638.18 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Public Hospital Dist No 1 Skagit |
$31,598,813.87 |
Washington State Checkbook |
| 2019 |
Social And Health Services |
Chesterfield Services Inc |
$31,578,491.01 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Healthpoint |
$31,565,424.95 |
Washington State Checkbook |
| 2025 |
Children, Youth, And Families |
King County |
$31,533,884.43 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Com General Acct |
$31,390,712.99 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Great Rivers Behavioral Health O |
$31,383,008.02 |
Washington State Checkbook |
| 2021 |
Health |
Merck Sharp And Dohme Corp |
$31,375,807.36 |
Washington State Checkbook |
| 2019 |
Health |
Merck Sharp And Dohme Corp |
$31,321,212.80 |
Washington State Checkbook |
| 2025 |
Military Department |
Peacehealth Southwest Med Center |
$31,270,609.37 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Hamilton Construction Company |
$31,139,316.16 |
Washington State Checkbook |
| 2022 |
Social And Health Services |
Addus Healthcare Inc. |
$31,104,773.24 |
Washington State Checkbook |
| 2022 |
Health Care Authority |
North Sound Behavioral Hlth Org |
$31,104,160.86 |
Washington State Checkbook |
| 2021 |
Social And Health Services |
Us Bank Purchasing Card Program |
$31,059,815.78 |
Washington State Checkbook |
| 2022 |
Transportation |
Max J Kuney Company |
$31,048,017.30 |
Washington State Checkbook |
| 2025 |
Transportation |
National Railroad Passenger Corp |
$30,962,485.40 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Providence Health And Services-W |
$30,945,839.29 |
Washington State Checkbook |
| 2016 |
Social And Health Services |
Us Bank Purchasing Card Program |
$30,940,102.02 |
Washington State Checkbook |
| 2018 |
Transportation |
Hamilton Construction Company |
$30,927,616.97 |
Washington State Checkbook |
| 2019 |
Social And Health Services |
Seattle City Of Human Services |
$30,811,323.99 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Addus Healthcare Inc. |
$30,789,629.64 |
Washington State Checkbook |
| 2020 |
Transportation |
Hdr Engineering Inc |
$30,752,827.40 |
Washington State Checkbook |
| 2018 |
Transportation |
Siemens Industry Inc |
$30,744,421.73 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
Korean Womens Association |
$30,744,082.39 |
Washington State Checkbook |
| 2016 |
Public Schools |
American Institutes For Research |
$30,723,570.22 |
Washington State Checkbook |
| 2020 |
Social And Health Services |
King County |
$30,707,082.63 |
Washington State Checkbook |
| 2025 |
Public Schools |
Bremerton School District |
$30,700,764.12 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
First Choice In-Home Care, Inc. |
$30,693,083.81 |
Washington State Checkbook |
| 2021 |
Transportation |
Hdr Engineering Inc |
$30,675,388.54 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Public Hospital District 1 Of Ki |
$30,673,495.82 |
Washington State Checkbook |
| 2021 |
Transportation |
Granite Construction Company |
$30,603,904.58 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Addus Healthcare Inc. |
$30,551,447.97 |
Washington State Checkbook |
| 2024 |
Natural Resources |
Aero-Flite Inc |
$30,498,344.44 |
Washington State Checkbook |
| 2024 |
Labor And Industries |
Atg Legal Svcs |
$30,487,041.44 |
Washington State Checkbook |
| 2022 |
Health |
Merck Sharp And Dohme Corp |
$30,475,154.77 |
Washington State Checkbook |
| 2017 |
Department Of Ecology |
Oak Harbor City Of |
$30,467,248.79 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Public Hospital District 1 Of Ki |
$30,410,795.84 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Public Hospital District 1 Of Ki |
$30,385,072.99 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Sunrise Services Inc. |
$30,383,340.84 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
International Business Machines |
$30,361,652.88 |
Washington State Checkbook |
| 2018 |
Transportation |
Bnsf Railway Company |
$30,348,482.10 |
Washington State Checkbook |
| 2020 |
Transportation |
Central Washington Asphalt Inc |
$30,334,765.79 |
Washington State Checkbook |
| 2020 |
Social And Health Services |
International Business Machines |
$30,316,488.36 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Community Integrated Services, L |
$30,280,556.95 |
Washington State Checkbook |
| 2021 |
Commerce |
Thurston County |
$30,231,534.08 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Chesterfield Services Inc |
$30,228,732.07 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Com General Acct |
$30,221,761.46 |
Washington State Checkbook |
| 2016 |
Social And Health Services |
Stillaguamish Tribe Of Indians |
$30,163,743.08 |
Washington State Checkbook |
| 2022 |
Children, Youth, And Families |
Snohomish County Human Services |
$30,147,322.81 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Good Health, Inc. |
$30,093,870.09 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Walgreen Co |
$30,092,554.94 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Beacon Health Options Inc |
$30,084,156.15 |
Washington State Checkbook |
| 2025 |
Children, Youth, And Families |
Washington State Child Care Res |
$30,081,450.13 |
Washington State Checkbook |
| 2020 |
Enterprise Services |
Jay Franco And Sons Inc |
$30,034,435.00 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Pierce County Human Services |
$30,008,369.56 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Accredo Health Group Inc |
$29,998,974.74 |
Washington State Checkbook |
| 2021 |
Health Care Authority |
Providence Health And Services-W |
$29,993,917.40 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
North Sound Behavioral Hlth Org |
$29,914,788.92 |
Washington State Checkbook |
| 2025 |
Commerce |
Downtown Emergency Service Ctr |
$29,859,432.70 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Cowlitz County |
$29,742,819.86 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Sbctc Fund 001 |
$29,678,422.12 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Sea-Mar Community Health Center |
$29,676,264.45 |
Washington State Checkbook |
| 2023 |
Children, Youth, And Families |
Washington State Child Care Res |
$29,648,460.02 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Des Risk Mgmt Self Insur Claim |
$29,578,550.43 |
Washington State Checkbook |
| 2022 |
Health |
Everly Well Inc |
$29,544,310.00 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Yakima Valley Farm Workers Clini |
$29,509,499.11 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
State Board For Community & Tech |
$29,484,422.16 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Unitedhealthcare Of Washington |
$29,476,433.24 |
Washington State Checkbook |
| 2023 |
Transportation |
Interwest Construction Inc |
$29,449,729.68 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
United Behavioral Health Inc |
$29,428,678.62 |
Washington State Checkbook |
| 2025 |
Public Schools |
Chief Leschi Schools |
$29,392,274.43 |
Washington State Checkbook |