| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2024 |
Health |
Glaxosmithkline Llc |
$13,017,022.71 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Moda Health Plan Inc |
$13,013,721.55 |
Washington State Checkbook |
| 2019 |
Enterprise Services |
Alliant Insurance Services Inc |
$13,013,111.89 |
Washington State Checkbook |
| 2025 |
Transportation |
City Of Seattle |
$13,012,798.89 |
Washington State Checkbook |
| 2018 |
Rec And Conservation Funding Board |
Dfw General Account |
$12,996,898.04 |
Washington State Checkbook |
| 2021 |
Public Schools |
County Of Yakima Sunnyside Sch |
$12,991,412.71 |
Washington State Checkbook |
| 2016 |
Ecology |
Bureau Of Reclamation |
$12,988,910.10 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Olympic Area Agency On Aging |
$12,980,761.70 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Providence Health & Services - W |
$12,979,804.62 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Yakama Health Center |
$12,976,603.21 |
Washington State Checkbook |
| 2016 |
Corrections |
Sbctc Fund 001 |
$12,973,437.50 |
Washington State Checkbook |
| 2023 |
Public Schools |
Summit Public Schools Wash |
$12,970,589.22 |
Washington State Checkbook |
| 2021 |
Public Schools |
Puyallup School Dist 3 |
$12,962,271.36 |
Washington State Checkbook |
| 2024 |
State Parks And Recreation Comm |
Us Bank Purchasing Card Program |
$12,960,369.85 |
Washington State Checkbook |
| 2024 |
Commerce |
Kitsap County Human Services |
$12,957,964.43 |
Washington State Checkbook |
| 2025 |
Children, Youth, And Families |
Security Services Nw Inc |
$12,946,855.06 |
Washington State Checkbook |
| 2023 |
Transportation |
Pierce Transit |
$12,945,139.76 |
Washington State Checkbook |
| 2023 |
Commerce |
Low Income Housing Institute |
$12,935,615.65 |
Washington State Checkbook |
| 2018 |
Transportation |
King Co Finance Division |
$12,934,614.56 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Neeley Construction Company |
$12,921,228.39 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Cowlitz County - Aging Disabilit |
$12,918,646.16 |
Washington State Checkbook |
| 2024 |
Social And Health Services |
Cascade Connections |
$12,914,114.38 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Central Washington Health Servic |
$12,912,144.30 |
Washington State Checkbook |
| 2025 |
Recreation And Conservation Office |
Parks Capital Projects |
$12,908,583.97 |
Washington State Checkbook |
| 2025 |
Transportation |
Keybank National Association |
$12,902,530.31 |
Washington State Checkbook |
| 2025 |
Natural Resources |
Northwest Helicopters Llc |
$12,897,383.11 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Community Integrtd Sv Inc |
$12,895,037.17 |
Washington State Checkbook |
| 2019 |
Health Care Authority |
Thurston Mason Behav Health Org |
$12,892,621.43 |
Washington State Checkbook |
| 2017 |
Department Of Transportation |
Acme Concrete Paving Inc |
$12,887,790.98 |
Washington State Checkbook |
| 2019 |
Social And Health Services |
Full Life Care |
$12,885,277.63 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Harbor Alternate Living Associat |
$12,883,677.42 |
Washington State Checkbook |
| 2016 |
Natural Resources |
Usda Forest Service |
$12,875,372.03 |
Washington State Checkbook |
| 2024 |
Ecology |
Sultan City Of |
$12,873,855.53 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Kitsap County Human Services |
$12,868,887.34 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Pantherx Specialty, Llc |
$12,866,066.84 |
Washington State Checkbook |
| 2022 |
Social And Health Services |
Volunteers Of America Western Wa |
$12,865,279.60 |
Washington State Checkbook |
| 2020 |
Corrections |
Hca Admin Accounting |
$12,852,451.17 |
Washington State Checkbook |
| 2025 |
Corrections |
Us Bank Purchasing Card Program |
$12,845,998.85 |
Washington State Checkbook |
| 2021 |
Transportation |
Spokane Transit Authority |
$12,827,149.00 |
Washington State Checkbook |
| 2020 |
Health |
Sanofi Pasteur Inc |
$12,826,335.16 |
Washington State Checkbook |
| 2022 |
Health |
Desautel Hege Communications |
$12,821,922.72 |
Washington State Checkbook |
| 2025 |
Transportation |
Southern Road & Bridge Llc |
$12,818,350.58 |
Washington State Checkbook |
| 2020 |
Health Care Authority |
Greater Columbia Behavioral Hlth |
$12,818,047.27 |
Washington State Checkbook |
| 2016 |
Health Care Authority |
Sister's Of Providence - Provide |
$12,808,886.73 |
Washington State Checkbook |
| 2023 |
Public Schools |
Washington School Principals Ed |
$12,806,059.89 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Providence Health And Services |
$12,805,797.19 |
Washington State Checkbook |
| 2018 |
Public Schools |
Ellensburg School District 401 |
$12,797,625.78 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
Cowlitz County - Aging Disabilit |
$12,785,369.20 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Tulalip Tribes Of Washington |
$12,783,905.27 |
Washington State Checkbook |
| 2016 |
Social And Health Services |
Harborview Medical Center |
$12,778,908.19 |
Washington State Checkbook |
| 2023 |
Health Care Authority |
Virginia Mason Medical Center |
$12,768,391.68 |
Washington State Checkbook |
| 2023 |
Social And Health Services |
Northwest Regional Council |
$12,762,629.41 |
Washington State Checkbook |
| 2025 |
Employment Security Department |
Office Of Admin Hearings |
$12,755,489.00 |
Washington State Checkbook |
| 2017 |
Wash State Health Care Authority |
Oregon Health Sciences Univ |
$12,753,921.13 |
Washington State Checkbook |
| 2025 |
Ecology |
Craft3 |
$12,753,057.50 |
Washington State Checkbook |
| 2022 |
Social And Health Services |
Empres At Seattle Llc |
$12,750,580.15 |
Washington State Checkbook |
| 2017 |
Supt Of Public Instruction |
Federal Way Public Schools |
$12,747,983.73 |
Washington State Checkbook |
| 2016 |
Social And Health Services |
Senior Life Resources Northwest, |
$12,740,673.60 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Peacehealth Southwest Medical Ce |
$12,737,562.41 |
Washington State Checkbook |
| 2021 |
Transportation |
National Railroad Passenger Corp |
$12,728,915.32 |
Washington State Checkbook |
| 2025 |
Ecology |
City Of Pasco |
$12,724,035.70 |
Washington State Checkbook |
| 2024 |
Transportation |
Parametrix Inc |
$12,709,672.39 |
Washington State Checkbook |
| 2025 |
Transportation |
Pierce Transit |
$12,701,623.00 |
Washington State Checkbook |
| 2023 |
Health |
Glaxosmithkline Llc |
$12,700,415.28 |
Washington State Checkbook |
| 2019 |
Health Care Authority |
Virginia Mason Medical Center |
$12,699,257.61 |
Washington State Checkbook |
| 2018 |
Social And Health Services |
Cascade Behavioral Hospital Llc |
$12,690,472.72 |
Washington State Checkbook |
| 2023 |
Commerce |
Multi Service Center |
$12,689,606.75 |
Washington State Checkbook |
| 2019 |
Social And Health Services |
Jody Miller Construction Inc |
$12,685,484.41 |
Washington State Checkbook |
| 2017 |
Dept Of Social And Health Services |
Snohomish County Division On |
$12,676,309.17 |
Washington State Checkbook |
| 2023 |
Transportation |
Oregon Dot |
$12,674,763.13 |
Washington State Checkbook |
| 2022 |
Transportation |
C A Carey Corp |
$12,674,114.27 |
Washington State Checkbook |
| 2023 |
Public Schools |
North Thurston Public Schools |
$12,654,189.56 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Unity Care Northwest |
$12,653,099.55 |
Washington State Checkbook |
| 2016 |
Social And Health Services |
Beneficial In-Home Care, Inc. |
$12,648,263.00 |
Washington State Checkbook |
| 2022 |
Social And Health Services |
Accenture Llp |
$12,619,173.81 |
Washington State Checkbook |
| 2021 |
Health Care Authority |
Shc Medical Center - Toppenish |
$12,617,432.74 |
Washington State Checkbook |
| 2016 |
Health Care Authority |
Yakima Hma Llc |
$12,600,100.43 |
Washington State Checkbook |
| 2019 |
Health |
Com General Acct |
$12,597,734.48 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Delta Dental Of Washington |
$12,594,665.45 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Providence Health & Services - W |
$12,591,918.95 |
Washington State Checkbook |
| 2020 |
Social And Health Services |
Sails Washington Inc |
$12,591,537.31 |
Washington State Checkbook |
| 2021 |
Social And Health Services |
Integrated Living Services |
$12,582,237.08 |
Washington State Checkbook |
| 2022 |
Health |
Careevolution Llc |
$12,572,506.96 |
Washington State Checkbook |
| 2022 |
Commerce |
Grays Harbor Co Health Dept |
$12,571,077.17 |
Washington State Checkbook |
| 2022 |
Health Care Authority |
Neighborcare Health |
$12,569,774.74 |
Washington State Checkbook |
| 2021 |
Health Care Authority |
Confluence Health |
$12,564,421.33 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Unity Care Northwest |
$12,564,271.71 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Alternative Nursing Services |
$12,547,059.82 |
Washington State Checkbook |
| 2022 |
Commerce |
Chelan-Douglas Comm Action Cncl |
$12,539,940.90 |
Washington State Checkbook |
| 2016 |
Transportation |
Lakeside Industries Inc |
$12,537,956.95 |
Washington State Checkbook |
| 2022 |
Health |
Cic Health Llc |
$12,534,596.62 |
Washington State Checkbook |
| 2022 |
Transportation |
Central Puget Sound Transit Auth |
$12,534,055.86 |
Washington State Checkbook |
| 2025 |
Children, Youth, And Families |
Pierce County |
$12,533,804.32 |
Washington State Checkbook |
| 2023 |
State Parks And Recreation Comm |
Us Bank Purchasing Card Program |
$12,527,116.14 |
Washington State Checkbook |
| 2025 |
Health Care Authority |
Navos |
$12,522,162.04 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Milliman Inc |
$12,520,435.40 |
Washington State Checkbook |
| 2024 |
Health Care Authority |
Comprehensive Mental Health Cntr |
$12,512,300.45 |
Washington State Checkbook |
| 2018 |
Health Care Authority |
Assoc Of University Physicians |
$12,509,927.48 |
Washington State Checkbook |
| 2025 |
Social And Health Services |
Kitsap Tenant Support Services I |
$12,509,602.02 |
Washington State Checkbook |
| 2019 |
Health Care Authority |
Good Health, Inc. |
$12,505,408.46 |
Washington State Checkbook |