| Bellevue Medical Center | Synergy Medical | Bellevue | DMEPOS; Orthotics & Prosthetics |
| Capstone Medical, Inc. | NA | Spokane Valley | DMEPOS; Warehouse/Distribution Center |
| Capstone Medical, Inc. | NA | Lakewood | DMEPOS |
| Clallam County Public Hospital District No. 1 | Clallam Bay Medical Clinic | Clallam Bay | Rural Health Clinic |
| Clallam County Public Hospital District No. 1 | Bogachiel Medical Clinic | Forks | Rural Health Clinic |
| Clallam County Public Hospital District No.1 | Forks Family Medical Clinic | Forks | Rural Health Clinic |
| David M. Warwick, DC,PLLC | Warwick Chiropractic & Massage | Lacey | DMEPOS |
| Elite Medical Inc | NA | Tacoma | DMEPOS |
| Grant County Public Hospital District 1 | Samaritan Clinic on Patton | Moses Lake | Rural Health Clinic |
| Hi-School Pharmacy Services | MOT Hi-School, #600 | Vancouver | Community Rx; Long Term Care Pharmacy; Non-Sterile Compounding |
| Hi-School Pharmacy Services, LLC | NA | Vancouver | Corporate HQ |
| Hi-School Pharmacy Services, LLC | Hi-School Pharmacy, #2100 | Woodland | Community Rx |
| Hi-School Pharmacy Services, LLC | Hi-School Pharmacy, #3200 | Vancouver | Community Rx |
| Hi-School Pharmacy Services, LLC | Hi-School Pharmacy, #3500 | White Salmon | Community Rx |
| Hi-School Pharmacy Services, LLC | Cathlamet Pharmacy, #1148 | Cathlamet | Community Rx |
| Hi-School Pharmacy Services, LLC | Wind River Pharmacy, #1179 | Stevenson | Community Rx |
| IROC PS | Latimer Chiropractic | Wenatchee | DMEPOS |
| Jefferson County Public Hospital District NO 2 | Jefferson Healthcare Express Clinic | Port Townsend | Rural Health Clinic |
| Kestra Medical Technology Services, Inc. | NA | Kirkland | DMEPOS |
| Kinetic Orthopedics | NA | Spokane | DMEPOS |
| Kingston Crossing Wellness | Bremerton Wellness | Bremerton | DMEPOS |
| Kingston Crossing Wellness P.S. | Kingston Crossing Wellness | Kingston | DMEPOS; Orthotics & Prosthetics |
| Klickitat County Public Hospital District No. 2 | Skyline Medical Clinic | White Salmon | Rural Health Clinic |
| MaxCare, LLC | NA | Kennewick | DMEPOS |
| MD Medical Supplies, Inc. | NA | Kent | DMEPOS |
| N.W. Pediatric Center Inc PS | N W Pediatric Center | Centralia | Rural Health Clinic |
| Okanogan County Public Hospital Dist No. 4 | Tonasket Family Medical Clinic | Tonaket | Rural Health Clinic |
| Okanogan Douglas County Hospital District 1 | Three Rivers Family Medicine | Brewster | Rural Health Clinic |
| Opdahl Chiropractic | Opdahl Chiropractic | Battle Ground | DMEPOS |
| Pacific Healthcare Group | Rainier Surgical Group | Auburn | DMEPOS; Orthotics & Prosthetics |
| Pediatric Associates of Whidbey Island, PS | Pediatric Associates of Whidbey Island | Freeland | Rural Health Clinic |
| ProCare, Inc. | ProCare Medical Equipment | Spokane Valley | DMEPOS; Warehouse/Distribution Center |
| Professional Medical Corp. | NA | Seattle | DMEPOS |
| Prosser Public Hospital District of Benton County | Prosser Clinic- Prosser Memorial Health | Prosser | Rural Health Clinic |
| Prosser Public Hospital District of Benton County | Prosser Memorial Health Grandview Clinic | Grandview | Rural Health Clinic |
| Public Hospital District 3 of Pacific County | Ocean Beach Medical Group-Ocean Park | Ocean Park | Rural Health Clinic |
| Public Hospital District No.4, King County, Washington | Snoqualmie Valley Hospital Clinic | Snoqualmie | Rural Health Clinic |
| Public Hospital District No.4, King County, Washington | Snoqualmie Ridge Medical Clinic | Snoqualmie | Rural Health Clinic |
| RXLTC PLLC | Rx Pharmacy LTC | Kennewick | Community Rx; DMEPOS; Long Term Care Pharmacy |
| Select Orthopedics, LLC | NA | Lynnwood | DMEPOS |
| SHC Medical Center - Toppenish | Vintage Valley Family Medicine | Zillah | Rural Health Clinic |
| SHC Medical Center-Toppenish | Astria Health Center | Union Gap | Rural Health Clinic |
| SHC Medical Center-Toppenish | Astria Health Center | Toppenish | Rural Health Clinic |
| Synergy Medical Systems LLC | NA | Federal Way | DMEPOS |
| Valuplus Medical Supply LLC | Valuplus Medical Supply | Wenatchee | DMEPOS |
| Vesiflo, Inc. | Vesiflo | Redmond | DMEPOS |
| Welu Healthcare Inc. | Highland Pharmacy | Federal Way | Community Rx; DMEPOS |
| Wenatchee Valley Hospital | Confluence Health Ephrata | Ephrata | Rural Health Clinic |
| Whidbey Island Public Hospital District | WhidbeyHealth Primary Care-Coupeville | Coupeville | Rural Health Clinic |
| Whidbey Island Public Hospital District | WhidbeyHealth Primary Care-Cabot | Oak Harbor | Rural Health Clinic |
| Whidbey Island Public Hospital District | WhidbeyHealth Women's Care | Coupeville | Rural Health Clinic |
| Whidbey Island Public Hospital District | WhidbeyHealth Primary Care-Freeland | Freeland | Rural Health Clinic |