| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2019 |
Washington State Checkbook |
Catholic Community Services Of W |
$50,057,568.13 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Swedish Health Services |
$49,989,337.64 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Stillaguamish Tribe Of Indians |
$49,956,531.72 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Rainier Inc |
$49,909,347.56 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Walla Walla School Dist 140 |
$49,816,960.90 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Granite Construction Company |
$49,754,113.86 |
Washington State Checkbook |
| 2017 |
Department Of Enterprise Services |
Sellen Construction Co Inc |
$49,659,425.19 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Granite Construction Company |
$49,579,009.29 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Seattle City Of Human Services |
$49,552,465.49 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Snohomish County Human Services |
$49,503,203.41 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
First Choice In-Home Care, Inc. |
$49,366,397.18 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
First Choice In-Home Care, Inc. |
$49,253,984.70 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Imco General Construction Inc |
$49,187,727.02 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Stillaguamish Tribe Of Indians |
$49,153,898.17 |
Washington State Checkbook |
| 2023 |
Transportation |
Central Washington Asphalt Inc |
$49,152,591.38 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
King County |
$49,112,149.45 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Beacon Health Options Inc |
$48,856,106.47 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Swedish Health Services |
$48,851,834.26 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Acentra Health Llc |
$48,630,867.64 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Community Health Association Of |
$48,512,651.03 |
Washington State Checkbook |
| 2024 |
Transportation |
Granite Construction Company |
$48,461,145.21 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Swedish Health Services |
$48,381,108.22 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Catholic Community Services Of W |
$48,129,093.63 |
Washington State Checkbook |
| 2025 |
Transportation |
Granite Construction Company |
$47,806,508.14 |
Washington State Checkbook |
| 2025 |
Transportation |
Rainier Inc |
$47,754,733.31 |
Washington State Checkbook |
| 2025 |
Washington Technology Solutions |
Insight Public Sector Inc |
$47,735,623.62 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Hopelink |
$47,718,548.35 |
Washington State Checkbook |
| 2024 |
Enterprise Services |
Alliant Insurance Services Inc |
$47,527,503.57 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Sea-Mar Community Health Center |
$47,432,756.22 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Sister's Of Providence - Provide |
$47,226,218.32 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Unitedhealthcare Of Washington |
$47,156,649.92 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Swedish Health Services |
$47,107,419.18 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Aacres Wa Llc |
$46,961,836.27 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Public Hospital District 1 Of Ki |
$46,867,265.37 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
First Choice In-Home Care, Inc. |
$46,615,792.36 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Aacres Wa Llc |
$46,374,566.85 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Ambitions Of Washington |
$46,256,084.90 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Good Health, Inc. |
$46,244,395.57 |
Washington State Checkbook |
| 2024 |
Transportation |
Walsh Construction Ii |
$46,196,630.34 |
Washington State Checkbook |
| 2018 |
Ecology |
Oak Harbor City Of |
$46,172,767.10 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Wsp Usa Inc |
$46,106,031.95 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Vancouver School District 37 |
$45,956,629.10 |
Washington State Checkbook |
| 2018 |
Public Schools |
Kennewick School District 17 |
$45,953,290.18 |
Washington State Checkbook |
| 2024 |
Children, Youth, And Families |
Kuehg Corp |
$45,876,500.15 |
Washington State Checkbook |
| 2025 |
Commerce |
Puget Sound Energy |
$45,856,653.13 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Hopelink |
$45,829,688.63 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Shi International Corp |
$45,766,106.11 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Central Kitsap School Dist 401 |
$45,687,180.99 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Aacres Wa Llc |
$45,670,064.68 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Greater Columbia Behavioral Heal |
$45,620,348.77 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Seattle Childrens Hospital |
$45,548,876.64 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Unitedhealthcare Of Washington |
$45,513,544.59 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Des Office Facilities |
$45,443,915.15 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Auburn School District 408 |
$45,440,273.15 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Consumer Direct Care Network Wa |
$45,339,905.11 |
Washington State Checkbook |
| 2025 |
Commerce |
King Co Housing & Comm Dev |
$45,295,785.80 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Hopelink |
$45,291,042.63 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Kitsap County |
$45,225,312.95 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Thurston County |
$45,086,087.29 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
King Co Public Health |
$45,043,055.03 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Client Network Services Llc |
$45,020,950.47 |
Washington State Checkbook |
| 2023 |
Health |
Merck Sharp And Dohme Corp |
$44,873,096.45 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Hopelink |
$44,872,708.15 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Unitedhealthcare Of Washington |
$44,821,811.27 |
Washington State Checkbook |
| 2025 |
Public Schools |
Pasco School District No 1 |
$44,777,266.27 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Alpha Supported Living Services |
$44,707,896.33 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Stillaguamish Tribe Of Indians |
$44,552,544.82 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Swedish Health Services |
$44,535,595.72 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Thurston County |
$44,447,176.17 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Scarsella Bros Inc |
$44,376,696.99 |
Washington State Checkbook |
| 2023 |
Transportation |
Hoffman-Pacific A Jv |
$44,312,357.17 |
Washington State Checkbook |
| 2018 |
Transportation |
Skanska Usa Civil West Ca Dist |
$44,310,426.31 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Des Office Facilities |
$44,039,715.87 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
Catholic Community Services Of W |
$44,028,452.41 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
Aacres Wa Llc |
$43,851,437.86 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Bioplus Specialty Pharmacy Svs |
$43,715,410.90 |
Washington State Checkbook |
| 2025 |
Transportation |
Hdr Engineering Inc |
$43,526,897.95 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Alpha Supported Living Services |
$43,497,097.85 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Washington Institute For Coagula |
$43,472,944.54 |
Washington State Checkbook |
| 2018 |
Public Schools |
Central Valley School Dist 356 |
$43,101,203.92 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Client Network Services Llc |
$43,037,670.51 |
Washington State Checkbook |
| 2021 |
Washington State Checkbook |
Hoffman-Pacific A Jv |
$42,897,415.93 |
Washington State Checkbook |
| 2025 |
Commerce |
Cohen Ventures Inc |
$42,883,120.00 |
Washington State Checkbook |
| 2024 |
Children, Youth, And Families |
Puget Sound Educ Svc Dist 121 |
$42,855,289.25 |
Washington State Checkbook |
| 2024 |
Children, Youth, And Families |
King Co Finance |
$42,791,427.17 |
Washington State Checkbook |
| 2024 |
Military Department |
King County Public Hosp Dist 2 |
$42,782,419.90 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Des Office Facilities |
$42,749,211.07 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Kitsap County |
$42,605,473.79 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
North Sound Behavioral Hlth Org |
$42,546,802.99 |
Washington State Checkbook |
| 2020 |
Washington State Checkbook |
Korean Womens Association |
$42,462,304.63 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Client Network Services Llc |
$42,450,728.67 |
Washington State Checkbook |
| 2018 |
Transportation |
Rainier Inc |
$42,428,398.94 |
Washington State Checkbook |
| 2025 |
Enterprise Services |
Hoffman Construction Company Of |
$42,366,447.18 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Us Bank Purchasing Card Program |
$42,357,883.90 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Community Health Association Of |
$42,269,323.59 |
Washington State Checkbook |
| 2019 |
Washington State Checkbook |
Kiewit Infrastructure West Co |
$42,249,638.98 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Office Of Admin Hearings |
$42,216,298.61 |
Washington State Checkbook |
| 2025 |
Transportation |
Aecon Pacific Northwest Inc |
$42,216,050.14 |
Washington State Checkbook |
| 2022 |
Washington State Checkbook |
Washington Institute For Coagula |
$42,206,454.67 |
Washington State Checkbook |
| 2023 |
Ecology |
Seattle City Of Util Solid Wst |
$42,195,531.85 |
Washington State Checkbook |