| ARBOR HEALTH MORTON HOSPITAL MORTON | MORTON | Critical Access Hospitals | N/A | Yes |
| ASTRIA SUNNYSIDE HOSPITAL SUNNYSIDE | SUNNYSIDE | Critical Access Hospitals | 1 | Yes |
| ASTRIA TOPPENISH HOSPITAL TOPPENISH | TOPPENISH | Acute Care Hospitals | N/A | Yes |
| BHC FAIRFAX HOSPITAL KIRKLAND | KIRKLAND | Psychiatric | N/A | No |
| CAPITAL MEDICAL CENTER OLYMPIA | OLYMPIA | Acute Care Hospitals | 4 | Yes |
| CASCADE MEDICAL CENTER LEAVENWORTH | LEAVENWORTH | Critical Access Hospitals | N/A | Yes |
| CASCADE VALLEY HOSPITAL ARLINGTON | ARLINGTON | Acute Care Hospitals | 1 | Yes |
| COLUMBIA BASIN HOSPITAL EPHRATA | EPHRATA | Critical Access Hospitals | N/A | Yes |
| CONFLUENCE HEALTH HOSPITAL WENATCHEE | WENATCHEE | Acute Care Hospitals | 4 | Yes |
| COULEE MEDICAL CENTER GRAND COULEE | GRAND COULEE | Critical Access Hospitals | N/A | Yes |
| DAYTON GENERAL HOSPITAL DAYTON | DAYTON | Critical Access Hospitals | N/A | Yes |
| DEACONESS MEDICAL CENTER SPOKANE | SPOKANE | Acute Care Hospitals | 3 | Yes |
| EAST ADAMS RURAL HOSPITAL RITZVILLE | RITZVILLE | Critical Access Hospitals | N/A | Yes |
| EASTERN STATE HOSPITAL MEDICAL LAKE | MEDICAL LAKE | Psychiatric | N/A | No |
| EVERGREENHEALTH MEDICAL CENTER KIRKLAND | KIRKLAND | Acute Care Hospitals | 5 | Yes |
| EVERGREENHEALTH MONROE MONROE | MONROE | Acute Care Hospitals | N/A | Yes |
| FERRY COUNTY MEMORIAL HOSPITAL REPUBLIC | REPUBLIC | Critical Access Hospitals | N/A | Yes |
| FORKS COMMUNITY HOSPITAL FORKS | FORKS | Critical Access Hospitals | N/A | Yes |
| GARFIELD COUNTY PUBLIC HOSPITAL DISTRICT #1 POMEROY | POMEROY | Critical Access Hospitals | N/A | Yes |
| GRAYS HARBOR COMMUNITY HOSPITAL ABERDEEN | ABERDEEN | Acute Care Hospitals | 2 | Yes |
| HARBORVIEW MEDICAL CENTER SEATTLE | SEATTLE | Acute Care Hospitals | 1 | Yes |
| HARRISON MEDICAL CENTER SILVERDALE | SILVERDALE | Acute Care Hospitals | 4 | Yes |
| HIGHLINE MEDICAL CENTER BURIEN | BURIEN | Acute Care Hospitals | 2 | Yes |
| INLAND NORTHWEST BEHAVIORAL HEALTH SPOKANE | SPOKANE | Psychiatric | N/A | No |
| ISLAND HOSPITAL ANACORTES | ANACORTES | Acute Care Hospitals | 5 | Yes |
| JEFFERSON HEALTHCARE PORT TOWNSEND | PORT TOWNSEND | Critical Access Hospitals | 3 | Yes |
| KADLEC REGIONAL MEDICAL CENTER RICHLAND | RICHLAND | Acute Care Hospitals | 4 | Yes |
| KAISER PERMANENTE CENTRAL HOSPITAL SEATTLE | SEATTLE | Acute Care Hospitals | N/A | Yes |
| KITTITAS VALLEY COMMUNITY HOSPITAL ELLENSBURG | ELLENSBURG | Critical Access Hospitals | N/A | Yes |
| KLICKITAT VALLEY HOSPITAL GOLDENDALE | GOLDENDALE | Critical Access Hospitals | N/A | Yes |
| LAKE CHELAN COMMUNITY HOSPITAL CHELAN | CHELAN | Critical Access Hospitals | N/A | Yes |
| LEGACY SALMON CREEK MEDICAL CENTER VANCOUVER | VANCOUVER | Acute Care Hospitals | 4 | Yes |
| LINCOLN HOSPITAL DAVENPORT | DAVENPORT | Critical Access Hospitals | N/A | Yes |
| LOURDES COUNSELING CENTER RICHLAND | RICHLAND | Psychiatric | N/A | No |
| LOURDES MEDICAL CENTER PASCO | PASCO | Critical Access Hospitals | 3 | Yes |
| Madigan AMC (FT Lewis) Joint Base Lewis-McChord | Joint Base Lewis-McChord | Acute Care - Department of Defense | N/A | Yes |
| MARY BRIDGE CHILDREN'S HOSPITAL TACOMA | TACOMA | Childrens | N/A | Yes |
| MASON GENERAL HOSPITAL & FAMILY OF CLINICS SHELTON | SHELTON | Critical Access Hospitals | 1 | Yes |
| MID VALLEY HOSPITAL & CLINIC OMAK | OMAK | Critical Access Hospitals | N/A | Yes |
| MULTICARE AUBURN MEDICAL CENTER AUBURN | AUBURN | Acute Care Hospitals | 2 | Yes |
| MULTICARE COVINGTON MEDICAL CENTER COVINGTON | COVINGTON | Acute Care Hospitals | 4 | Yes |
| MULTICARE GOOD SAMARITAN HOSPITAL PUYALLUP | PUYALLUP | Acute Care Hospitals | 2 | Yes |
| MULTICARE VALLEY HOSPITAL SPOKANE VALLEY | SPOKANE VALLEY | Acute Care Hospitals | 5 | Yes |
| NAVOS - INPATIENT SERVICES SEATTLE | SEATTLE | Psychiatric | N/A | No |
| NEWPORT COMMUNITY HOSPITAL NEWPORT | NEWPORT | Critical Access Hospitals | N/A | Yes |
| NORTH VALLEY HOSPITAL TONASKET | TONASKET | Critical Access Hospitals | N/A | Yes |
| OCEAN BEACH HOSPITAL ILWACO | ILWACO | Critical Access Hospitals | 3 | Yes |
| ODESSA MEMORIAL HEALTHCARE CENTER ODESSA | ODESSA | Critical Access Hospitals | N/A | Yes |
| OLYMPIC MEDICAL CENTER PORT ANGELES | PORT ANGELES | Acute Care Hospitals | 3 | Yes |
| OTHELLO COMMUNITY HOSPITAL OTHELLO | OTHELLO | Critical Access Hospitals | N/A | Yes |