| GATES FOUNDATION TRUST | Kirkland | T20Z Philanthropy, Voluntarism & Grantmaking Foundations | $10.2B | 0 |
| PROVIDENCE HEALTH & SERVICES - WASHINGTON | Renton | E210 Health Care | $9.7B | 43 |
| GATES FOUNDATION | Seattle | T22 Philanthropy, Voluntarism & Grantmaking Foundations | $8.1B | 17 |
| PROVIDENCE HEALTH & SERVICES - OREGON | Renton | E220 Health Care | $5.5B | 19 |
| MULTICARE HEALTH SYSTEM | Tacoma | E210 Health Care | $5B | 15 |
| PEACEHEALTH | Vancouver | E210 Health Care | $3.6B | 31 |
| SWEDISH HEALTH SERVICES | Renton | E220 Health Care | $3B | 19 |
| SEATTLE CHILDREN'S HOSPITAL | Seattle | E240 Health Care | $2.7B | 32 |
| PROVIDENCE HEALTH PLAN | Renton | — | $2.6B | 14 |
| PROVIDENCE HEALTH SYSTEM - SO CALIFORNIA | Renton | E220 Health Care | $2.3B | 19 |
| FRED HUTCHINSON CANCER CENTER | Seattle | E240 Health Care | $2B | 33 |
| FRANCISCAN HEALTH SYSTEM | Tacoma | E200 Health Care | $1.8B | 20 |
| DELTA DENTAL OF WASHINGTON | Seattle | E31 Health Care | $1.8B | 26 |
| COMMUNITY HEALTH PLAN OF WASHINGTON | Seattle | E31 Health Care | $1.6B | 19 |
| World Vision Inc | Federal Way | Q330 International, Foreign Affairs & National Security | $1.6B | 15 |
| CREDIT UNIONS IN THE STATE OF WASHINGTON | Tukwila | — | $1.5B | 33 |
| ST JOSEPH HEALTH NORTHERN CALIFORNIA LLC | Renton | E20 Health Care | $1.5B | 12 |
| PROVIDENCE MEDICAL FOUNDATION | Renton | E32 Health Care | $1.4B | 21 |
| VIRGINIA MASON MEDICAL CENTER | Seattle | E220 Health Care | $1.3B | 20 |
| KADLEC REGIONAL MEDICAL CENTER | Renton | E220 Health Care | $1B | 14 |
| ST JOSEPH HOSPITAL OF ORANGE | Renton | E210 Health Care | $970.1M | 11 |
| PIVOTAL PHILANTHROPIES OPPORTUNITY FOUNDATION | Redmond | T22 Philanthropy, Voluntarism & Grantmaking Foundations | $955.6M | 0 |
| PIVOTAL PHILANTHROPIES PATHWAYS FOUNDATION | Redmond | T22 Philanthropy, Voluntarism & Grantmaking Foundations | $955.6M | 0 |
| PIVOTAL PHILANTHROPIES MOMENTUM FOUNDATION | Redmond | T22 Philanthropy, Voluntarism & Grantmaking Foundations | $955.6M | 0 |
| MISSION HOSPITAL REGIONAL MEDICAL CENTER | Renton | E210 Health Care | $954.2M | 13 |
| ST JUDE HOSPITAL | Renton | E220 Health Care | $950.5M | 13 |
| Central Washington Health Services Association | Wenatchee | E220 Health Care | $914.5M | 23 |
| OVERLAKE MEDICAL CENTER & CLINICS | Bellevue | E220 Health Care | $802.8M | 13 |
| HARRISON MEDICAL CENTER | Silverdale | E220 Health Care | $783.6M | 17 |
| YAKIMA VALLEY MEMORIAL HOSPITAL ASSOCIATION | Yakima | E220 Health Care | $647M | 10 |
| LEGACY SALMON CREEK HOSPITAL | Vancouver | E22 Health Care | $566.2M | 28 |
| COVENANT MEDICAL CENTER | Renton | E22 Health Care | $563.6M | 14 |
| PROVIDENCE HEALTH & SERVICES - MONTANA | Renton | E220 Health Care | $563.3M | 15 |
| SEA MAR COMMUNITY HEALTH CENTERS | Seattle | E32Z Health Care | $561.9M | 12 |
| METHODIST CHILDREN'S HOSPITAL | Renton | E24Z Health Care | $471.3M | 13 |
| THE ASSOCIATION OF UNIVERSITY PHYSICIANS | Seattle | B11 Education | $465.1M | 47 |
| FRANCISCAN MEDICAL GROUP | Tacoma | E30 Health Care | $462.4M | 10 |
| CORPORATION OF GONZAGA UNIVERSITY | Spokane | B430 Education | $459M | 14 |
| PROVIDENCE SAINT JOHN'S HEALTH CENTER | Renton | E220 Health Care | $456.9M | 15 |
| SEATTLE UNIVERSITY | Seattle | — | $455.1M | 34 |
| ST MARY MEDICAL CENTER | Renton | E220 Health Care | $425.6M | 12 |
| PROVIDENCE PLAN PARTNERS | Renton | E020 Health Care | $386.3M | 14 |
| PROVIDENCE FACEY MEDICAL FOUNDATION | Renton | — | $376.3M | 19 |
| WASHINGTON TEAMSTERS WELFARE TRUST | Seattle | — | $376.2M | 0 |
| SEIU Healthcare NW Health Benefits Trust Plan | Seattle | Y43 Mutual & Membership Benefit | $375.4M | 0 |
| PATH | Seattle | Q300 International, Foreign Affairs & National Security | $353.5M | 16 |
| TARZANA MEDICAL CENTER LLC | Renton | E20 Health Care | $352.3M | 13 |
| YAKIMA VALLEY FARM WORKERS CLINIC | Toppenish | E320 Health Care | $349.6M | 9 |
| SPOKANE TEACHERS CREDIT UNION | Liberty Lake | — | $343.4M | 31 |
| WASHINGTON STATE EMPLOYEES CREDIT UNION | Olympia | — | $336M | 22 |
