| West Virginia University Medical Corporation | Morgantown | 1,980 |
| Charleston Area Medical Center Inc | Charleston | 985 |
| Radiology Alliance PC | Charleston | 455 |
| Wheeling Hospital Inc | Wheeling | 444 |
| Pikeville Medical Center Inc | Charleston | 425 |
| University Physicians and Surgeons, Inc | Huntington | 385 |
| Ths Physician Partners Inc | South Charleston | 378 |
| Camden-Clark Physician Corporation | Parkersburg | 348 |
| United Hospital Center Inc | Bridgeport | 298 |
| Monongalia County General Hospital Company | Morgantown | 243 |
| Princeton Community Hospital Assn. Inc. | Princeton | 179 |
| City Hospital Inc | Martinsburg | 161 |
| United Physicians Care Inc | Bridgeport | 125 |
| Northstar Anesthesia of West Virginia PLLC | Morgantown | 123 |
| Wmc Physician Practices LLC | Weirton | 120 |
| Ivy Medical Group PLLC | Hurricane | 118 |
| Valley Health Systems, Inc | Harts | 112 |
| First Settlement Physical Therapy | Vienna | 103 |
| St Joseph's Hospital of Buckhannon Inc | Buckhannon | 99 |
| Louisville Radiology Imaging Consultants PLLC | Charleston | 96 |
| Grandw Inc | Morgantown | 95 |
| Cabell Huntington Hospital Inc | Huntington | 92 |
| Community Care of West Virginia, Inc. | Weston | 89 |
| St. Mary's Medical Management, LLC | Huntington | 88 |
| East Mountain Health Physicians Inc | Ranson | 88 |
| Potomac Valley Hospital of W VA, Inc | Keyser | 87 |
| Camc Greenbrier Valley Medical Center Inc | Ronceverte | 84 |
| St. Mary's Himg, LLC | Huntington | 82 |
| Boone Memorial Hospital Inc | Madison | 79 |
| Davis Memorial Hospital | Elkins | 74 |
| Community Health Association | Ripley | 71 |
| Stonewall Jackson Memorial Hospital Company | Weston | 68 |
| Hospital Development Co. | Spencer | 64 |
| River Cities Anesthesia PLLC | Huntington | 61 |
| West Virginia Health Care Cooperative Inc | Summersville | 61 |
| Post Acute Telehealth PC | Beckley | 58 |
| Greenbrier Valley Physical Therapy LLC | Lewisburg | 55 |
| Womencare Inc | Charleston | 50 |
| Ballout International PLLC | Lewisburg | 49 |
| St Marys Hospitalist Services LLC | Huntington | 48 |
| Wetzel County Hospital Inc | New Martinsville | 48 |
| Braxton County Memorial Hospital | Gassaway | 47 |
| Prestera Center for Mental Health Services Inc | Danville | 47 |
| Preston Memorial Hospital Corporation | Kingwood | 46 |
| PA Post Acute Services PC | Beckley | 43 |
| Professional Anesthesia Service,inc. | South Charleston | 42 |
| Cabin Creek Health Center Inc | Dawes | 40 |
| Shenandoah Valley Medical System, Inc. | Martinsburg | 40 |
| Bluestone Health Association, Inc. | Princeton | 38 |
| Lincoln County Primary Care Center Inc | Logan | 38 |
| Rainelle Medical Center Inc | White Sulphur Springs | 38 |
| Point Pleasant Physician Billing Services | Point Pleasant | 37 |
| Grant Memorial Hospital Inc | Petersburg | 37 |
| Hospitalist Medicine Physicians of West Virginia - South Charleston | Princeton | 37 |
| New River Health Association Inc | Summersville | 36 |
| Mon Health Marion Neighborhood Hospital, Inc. | Fairmont | 36 |
| Community Health Systems Inc | Beckley | 36 |
| West Virginia School of Osteopathic Medicine Clinic Inc | Lewisburg | 34 |
| Radiological Physician Associates Inc | Morgantown | 32 |
| Jefferson Memorial Hospital | Ranson | 31 |
| Westbrook Health Services Inc | Parkersburg | 31 |
| Wirt County Health Services Association, Inc | Parkersburg | 31 |
| Clark Alliance Services Inc | Charleston | 30 |
| War Memorial Hospital, Inc. | Berkeley Springs | 29 |
| Country Roads Physical Therapy and Rehabilitation | Fairmont | 29 |
| Charleston Surgical Hospital, LLC | Charleston | 29 |
| Mountain State Medical Specialties PLLC | Bridgeport | 28 |
| Raleigh General Hospital LLC | Beckley | 27 |
| Logan General Hospital LLC | Logan | 27 |
| Camden on Gauley Medical Center Inc | Richwood | 26 |
| Wv Therapy Services LLC | Bridgeport | 26 |
| Hampshire Memorial Hospital, Inc. | Romney | 25 |
| Belington Community Medical Services Association | Philippi | 25 |
| Weirton Medical Center Inc | Weirton | 24 |
| Apogee Medical Group West Virginia PLLC | Beckley | 23 |
| Therapy Services, LLC | Bridgeport | 23 |
| Mid-Atlantic Anesthesia Consultants LLC | Hurricane | 23 |
| Minnie Hamilton Health Care Center Inc | Grantsville | 21 |
| Myeyedr Optometry of West Virginia PLLC | Parkersburg | 21 |
| Morgantown Physical Therapy Associates, Inc. | Morgantown | 20 |
| Virginia Pac Services PC | Bluefield | 20 |
| Appalachian Counseling Center LLC | Fairmont | 20 |
| Change Incorporated | Weirton | 19 |
| Valeo Medical PLLC | New Martinsville | 19 |
| E. A. Hawse Health Center, Inc. | Baker | 19 |
| Radiology Associates Inc | Wheeling | 18 |
| Racine Observation Medical Group, PLLC | Huntington | 18 |
| William R Sharpe Jr Hospital | Weston | 18 |
| Monroe County Health Center Board of Trustees | Union | 17 |
| Counseling and Wellness Center LLC | Parkersburg | 17 |
| Meditelecare of West Virginia PLLC | Williamson | 17 |
| Grafton City Hospital, Inc. | Grafton | 17 |
| Mhc Physicians Inc | Williamstown | 16 |
| Marietta Memorial Hospital of Tyler County Inc | Saint Marys | 16 |
| Regional Eye Associates Inc | Bridgeport | 15 |
| Rural Health Access Corporation | Chapmanville | 15 |
| United Summit Center Inc | Weston | 15 |
| Professional Sportscare and Rehab of West Virginia LLC | Martinsburg | 15 |
| St George Medical Clinic Inc | Parsons | 15 |
| Seneca Health Services Inc | Summersville | 15 |