| Grays Harbor Community Hospital | Aberdeen | Acute Care Hospitals | 3 | 275 |
| Island Hospital | Anacortes | Acute Care Hospitals | 4 | 457 |
| Cascade Valley Hospital | Arlington | Acute Care Hospitals | 4 | 293 |
| Multicare Auburn Medical Center | Auburn | Acute Care Hospitals | 2 | 452 |
| Overlake Hospital Medical Center & Clinics | Bellevue | Acute Care Hospitals | 2 | 875 |
| Peacehealth St Joseph Medical Center | Bellingham | Acute Care Hospitals | 4 | 639 |
| Three Rivers Hospital | Brewster | Critical Access Hospitals | — | 44 |
| Highline Medical Center | Burien | Acute Care Hospitals | 4 | 346 |
| Providence Centralia Hospital | Centralia | Acute Care Hospitals | 3 | 537 |
| Lake Chelan Community Hospital | Chelan | Critical Access Hospitals | — | 162 |
| Providence St Joseph Hospital | Chewelah | Critical Access Hospitals | — | 92 |
| Tri-State Memorial Hospital | Clarkston | Critical Access Hospitals | 4 | 188 |
| Whitman Hospital and Medical Center | Colfax | Critical Access Hospitals | 5 | 84 |
| Providence Mount Carmel Hospital | Colville | Critical Access Hospitals | 3 | 308 |
| Whidbeyhealth Medical Center | Coupeville | Critical Access Hospitals | 2 | 343 |
| Multicare Covington Medical Center | Covington | Acute Care Hospitals | 3 | 413 |
| Lincoln Hospital | Davenport | Critical Access Hospitals | — | 85 |
| Dayton General Hospital | Dayton | Critical Access Hospitals | — | 73 |
| Swedish Edmonds Hospital | Edmonds | Acute Care Hospitals | 3 | 865 |
| Kittitas Valley Community Hospital | Ellensburg | Critical Access Hospitals | — | 313 |
| Summit Pacific Medical Center | Elma | Critical Access Hospitals | 2 | 294 |
| St Elizabeth Hospital | Enumclaw | Critical Access Hospitals | 5 | 101 |
| Columbia Basin Hospital | Ephrata | Critical Access Hospitals | — | 77 |
| Providence Regional Medical Center Everett | Everett | Acute Care Hospitals | 4 | 1,006 |
| St Francis Community Hospital | Federal Way | Acute Care Hospitals | 4 | 577 |
| Forks Community Hospital | Forks | Critical Access Hospitals | — | 94 |
| Peacehealth Peace Island Medical Center | Friday Harbor | Critical Access Hospitals | — | 151 |
| St Anthony Hospital | Gig Harbor | Acute Care Hospitals | 5 | 604 |
| Klickitat Valley Hospital | Goldendale | Critical Access Hospitals | — | 94 |
| Coulee Medical Center | Grand Coulee | Critical Access Hospitals | — | 57 |
| Ocean Beach Hospital | Ilwaco | Critical Access Hospitals | 2 | 132 |
| Swedish Issaquah | Issaquah | Acute Care Hospitals | 4 | 739 |
| Madigan Amc (Ft Lewis) | Joint Base Lewis-Mcchord | Acute Care - Department of Defense | — | 0 |
| Trios Health | Kennewick | Acute Care Hospitals | 2 | 252 |
| Bhc Fairfax Hospital | Kirkland | Psychiatric | — | 0 |
| Evergreenhealth Medical Center | Kirkland | Acute Care Hospitals | 5 | 843 |
| South Sound Behavioral Hospital | Lacey | Psychiatric | — | 0 |
| St Clare Hospital | Lakewood | Acute Care Hospitals | 4 | 426 |
| Cascade Medical Center | Leavenworth | Critical Access Hospitals | — | 76 |
| Peacehealth St John Medical Center | Longview | Acute Care Hospitals | 4 | 399 |
| Smokey Point Behavioral Hospital | Marysville | Psychiatric | — | 0 |
| Eastern State Hospital | Medical Lake | Psychiatric | — | 0 |
| Evergreenhealth Monroe | Monroe | Acute Care Hospitals | 3 | 349 |
| Arbor Health Morton Hospital | Morton | Critical Access Hospitals | — | 68 |
| Samaritan Hospital | Moses Lake | Acute Care Hospitals | 2 | 292 |
| Skagit Valley Hospital | Mount Vernon | Acute Care Hospitals | 3 | 741 |
| Newport Community Hospital | Newport | Critical Access Hospitals | — | 155 |
| Odessa Memorial Healthcare Center | Odessa | Critical Access Hospitals | — | 11 |
| Capital Medical Center | Olympia | Acute Care Hospitals | 3 | 508 |
| Providence St Peter Hospital | Olympia | Acute Care Hospitals | 3 | 726 |
| Mid Valley Hospital & Clinic | Omak | Critical Access Hospitals | — | 163 |
| Othello Community Hospital | Othello | Critical Access Hospitals | — | 35 |
| Lourdes Medical Center | Pasco | Critical Access Hospitals | 3 | 180 |
| Garfield County Public Hospital District #1 | Pomeroy | Critical Access Hospitals | — | 11 |
| Olympic Medical Center | Port Angeles | Acute Care Hospitals | 3 | 784 |
| Jefferson Healthcare | Port Townsend | Critical Access Hospitals | 3 | 412 |
| Prosser Memorial Hospital | Prosser | Critical Access Hospitals | 3 | 237 |
| Pullman Regional Hospital | Pullman | Critical Access Hospitals | 2 | 215 |
| Multicare Good Samaritan Hospital | Puyallup | Acute Care Hospitals | 2 | 890 |
| Quincy Valley Medical Center | Quincy | Critical Access Hospitals | — | 35 |
| Valley Medical Center | Renton | Acute Care Hospitals | 2 | 674 |
| Ferry County Memorial Hospital | Republic | Critical Access Hospitals | — | 32 |
| Kadlec Regional Medical Center | Richland | Acute Care Hospitals | 4 | 942 |
| Lourdes Counseling Center | Richland | Psychiatric | — | 0 |
| East Adams Rural Hospital | Ritzville | Critical Access Hospitals | — | 20 |
| Harborview Medical Center | Seattle | Acute Care Hospitals | 2 | 1,393 |
| Kaiser Permanente Central Hospital | Seattle | Acute Care Hospitals | — | 92 |
| Navos - Inpatient Services | Seattle | Psychiatric | — | 0 |
| Seattle Children's Hospital | Seattle | Childrens | — | 84 |
| Seattle VA Medical Center (VA Puget Sound Healthcare System) | Seattle | Acute Care - Veterans Administration | 4 | 0 |
| Swedish Medical Center | Seattle | Acute Care Hospitals | 4 | 1,586 |
| Swedish Medical Center / Cherry Hill | Seattle | Acute Care Hospitals | 4 | 886 |
| University of Washington Medical Ctr | Seattle | Acute Care Hospitals | 4 | 2,311 |
| Virginia Mason Medical Center | Seattle | Acute Care Hospitals | 5 | 915 |
| Peacehealth United General Medical Center | Sedro Woolley | Critical Access Hospitals | 3 | 267 |
| Mason General Hospital & Family of Clinics | Shelton | Critical Access Hospitals | 2 | 254 |
| St Michael Medical Center | Silverdale | Acute Care Hospitals | 4 | 981 |
| Snoqualmie Valley Hospital | Snoqualmie | Critical Access Hospitals | — | 70 |
| Willapa Harbor Hospital | South Bend | Critical Access Hospitals | — | 83 |
| Deaconess Medical Center | Spokane | Acute Care Hospitals | 3 | 675 |
| Inland Northwest Behavioral Health | Spokane | Psychiatric | — | 0 |
| Prov Sacred Hrt Med Ctr & Childs Hosp. | Spokane | Acute Care Hospitals | 3 | 1,118 |
| Providence Holy Family Hospital | Spokane | Acute Care Hospitals | 3 | 560 |
| Shriners Hospital for Children | Spokane | Childrens | — | 0 |
| Spokane VA Medical Center | Spokane | Acute Care - Veterans Administration | 4 | 0 |
| Multicare Valley Hospital | Spokane Valley | Acute Care Hospitals | 5 | 437 |
| Astria Sunnyside Hospital | Sunnyside | Critical Access Hospitals | 2 | 135 |
| Mary Bridge Children's Hospital | Tacoma | Childrens | — | 2 |
| St Joseph Medical Center | Tacoma | Acute Care Hospitals | 3 | 1,500 |
| Tacoma General Allenmore Hospital | Tacoma | Acute Care Hospitals | 2 | 2,302 |
| Wellfound Behavioral Health Hospital | Tacoma | Psychiatric | — | 0 |
| North Valley Hospital | Tonasket | Critical Access Hospitals | — | 78 |
| Astria Toppenish Hospital | Toppenish | Acute Care Hospitals | — | 105 |
| Legacy Salmon Creek Medical Center | Vancouver | Acute Care Hospitals | 4 | 669 |
| Peacehealth Southwest Medical Cente | Vancouver | Acute Care Hospitals | 3 | 809 |
| Rainier Springs | Vancouver | Psychiatric | — | 0 |
| Providence St Mary Medical Center | Walla Walla | Acute Care Hospitals | 3 | 449 |
| Confluence Health Hospital | Wenatchee | Acute Care Hospitals | 3 | 680 |
| Skyline Hospital | White Salmon | Critical Access Hospitals | — | 98 |
| Yakima Valley Memorial | Yakima | Acute Care Hospitals | 1 | 703 |