| Kaiser Foundation Health Plan of the Northwest | Salem | 1,807 |
| University Professional Services | Beaverton | 1,724 |
| Providence Health and Services Oregon | Portland | 1,433 |
| Legacy Clinics LLC | Portland | 713 |
| Salem Health | Salem | 454 |
| Good Samaritan Hospital Corvallis | Corvallis | 380 |
| St Charles Health System Inc | Bend | 377 |
| The Oregon Clinic, PC | Portland | 362 |
| Western Psychological and Counseling Services LLC | Eugene | 348 |
| Therapeutic Associates Inc | Sisters | 317 |
| Legacy Salmon Creek Hospital | Portland | 301 |
| Tuality Medical Group LLC | Hillsboro | 297 |
| Portland Adventist Medical Center | Portland | 271 |
| Peacehealth Medical Group | Eugene | 255 |
| University Anesthesiology Associates LLC | Portland | 241 |
| Golden State Imaging Associates Inc | Medford | 239 |
| Legacy Emanuel Hospital and Health Center | Portland | 238 |
| Asante Physician Partners | Medford | 225 |
| Bend Memorial Clinic PC | Bend | 221 |
| Sky Lakes Medical Center Inc | Klamath Falls | 215 |
| Providence Health and Services - Oregon | Portland | 208 |
| Albany General Hospital | Albany | 198 |
| Peacehealth | Roseburg | 197 |
| Hospitalist Medicine Physicians of Washington - Tcs | Portland | 194 |
| Legacy Good Samaritan Hospital and Medical Center | Portland | 191 |
| Providence Health and Services - Oregon | Portland | 191 |
| St Charles Health System Inc | Redmond | 173 |
| Praxis Health PC | Tigard | 171 |
| Providence Health and Services Oregon | Medford | 170 |
| Oregon Healthcare Resources LLC | Springfield | 159 |
| Asante | Medford | 149 |
| Silverton Health | Silverton | 148 |
| Mid-Valley Healthcare Inc | Lebanon | 147 |
| Good Shepherd Health Care System | Hermiston | 136 |
| Icco LLC | Eugene | 135 |
| Santiam Memorial Hospital | Stayton | 129 |
| Inland Imaging LLC | Pendleton | 129 |
| Inland Imaging Associates Ps | Pendleton | 126 |
| Benchmark Physical Therapy of Oregon LLC | Salem | 125 |
| The Corvallis Clinic P C | Albany | 124 |
| Renaissance Imaging Medical Associates Inc | Medford | 124 |
| Bay Area Hospital District | Coos Bay | 122 |
| Legacy Meridian Park Hospital | Tualatin | 115 |
| Multnomah County | Portland | 111 |
| Warren General Hospital | Eugene | 106 |
| Columbia Lutheran Charities | Astoria | 106 |
| Mountain West Derm - Blackhart PLLC | Tigard | 105 |
| Womens Healthcare Associates LLC | Oregon City | 104 |
| Asante Three Rivers Medical Center LLC | Grants Pass | 99 |
| Grande Ronde Hospital Inc | La Grande | 97 |
| Providence Health and Services Oregon | Seaside | 97 |
| Salem Clinic PC | Salem | 96 |
| Oregon Health and Science University | Scappoose | 94 |
| Mid-Columbia Medical Center | The Dalles | 94 |
| Portland Clinic | Beaverton | 94 |
| Northwest Anesthesia Physicians PC | Springfield | 92 |
| North Bend Medical Center Inc | Coos Bay | 91 |
| Samaritan Pacific Health Services Inc | Newport | 87 |
| Virginia Garcia Memorial Health Center | Beaverton | 87 |
| Sound Physicians Intensivists of Washington PLLC | Springfield | 84 |
| Northwest Medical Foundation of Tillamook | Tillamook | 82 |
| Providence Health and Services Oregon | Hood River | 82 |
| Anesthesia Associates Northwest LLC | Salem | 81 |
| South Sound Radiologists Inc P S | Portland | 78 |
| County of Clackamas Office of County Auditor | Oregon City | 78 |
| Mosaic Community Health | Bend | 77 |
| Eye Health Northwest PC | Portland | 73 |
| Options for Southern Oregon | Grants Pass | 72 |
| Columbia Anesthesia Group P S | Portland | 70 |
| Northwest Cancer Specialists PC | Tigard | 69 |
| Slocum Orthopedics PC | Eugene | 67 |
| Southern Oregon Orthopedics Inc | Medford | 65 |
| Bend Anesthesiology Group, PC | Redmond | 65 |
| Centennial Medical Group East LLC | Roseburg | 65 |
| Radiology Associates of Macon PC | Medford | 64 |
| Providence Health and Services - Oregon | Newberg | 62 |
| Crm Physicians LLC | Hillsboro | 62 |
| Legacy Mount Hood Medical Center | Gresham | 59 |
| Centennial Medical Group Inc | Roseburg | 59 |
| Orthopedic and Fracture Clinic PC | Portland | 58 |
| La Clinica del Valle Family Health Care Center Inc | Medford | 57 |
| Steuben Radiology Associates Inc | Medford | 57 |
| Deschutes County Oregon | Bend | 57 |
| Lake Health District | Lakeview | 56 |
| Cascadia Health | Portland | 55 |
| Erhardt Physical Therapy and Sports Medicine LLC | Scappoose | 54 |
| Evergreen Family Medicine PC | Roseburg | 54 |
| Dhs Office of Financial Services Irs Eopc Bmrc Eotc Osh Osh-P | Salem | 53 |
| Providence Health and Services Oregon | Milwaukie | 53 |
| Southern Oregon Hospitalists PC | Medford | 52 |
| Providence Health and Services - Oregon | Oregon City | 52 |
| One Community Health | Hood River | 52 |
| Oregon Luna Care Physical Therapy LLC | Hillsboro | 50 |
| Uptown Providers PC | Hillsboro | 49 |
| Northwest Acute Care Specialists PC | Gresham | 49 |
| McKenzie Physician Services LLC | Springfield | 48 |
| Clear Choice Dermatology | Sandy | 48 |
| Anesthesia Associates of Medford PC | Medford | 48 |
| Nisha Jackson PC | North Bend | 48 |
| Oncology Associates of Oregon P C | Eugene | 48 |