| USACS Medical Group Ltd. | Canton, OH | 43 |
| Florida Emergency Physicians Kang & Associates, M.D., LLC | Knoxville, TN | 16 |
| University of Pittsburgh Physicians | Pittsburgh, PA | 15 |
| CEP America-California | Emeryville, CA | 9 |
| Hospitalist and Emergency Services of Texas, PA | Lafayette, LA | 9 |
| Duke University Health System | Durham, NC | 9 |
| Travis County Emergency Physicians, PA | Canton, OH | 9 |
| Presbyterian Healthcare Services | Albuquerque, NM | 7 |
| Emergency Coverage Services, P.C. | Knoxville, TN | 7 |
| Icahn School of Medicine at Mount Sinai | New York, NY | 7 |
| Lehigh Valley Hospital Inc. | Allentown, PA | 6 |
| Northwest Physician Associates, P.C. | Knoxville, TN | 6 |
| Johns Hopkins University | Baltimore, MD | 5 |
| Guam Healthcare Development, Inc. | Dededo, | 5 |
| Buffalo Emergency Associates, LLP | Knoxville, TN | 5 |
| Bayhealth Medical Center, Inc. | Dover, DE | 5 |
| USACS Medical Group of Texas, PLLC | Canton, OH | 4 |
| Emergency Associates of Yakima, Pllc | Yakima, WA | 4 |
| Valley Children'S Specialty Medical Group, Inc. | Madera, CA | 4 |
| MaineGeneral Medical Center | Augusta, ME | 4 |
| Emory University | Atlanta, GA | 4 |
| UPMC Medical Education | Pittsburgh, PA | 3 |
| Mercy Clinic Springfield Communities | Springfield, MO | 3 |
| Montefiore Medical Center | Bronx, NY | 3 |
| Emergency Physician Services of New York, PC | Knoxville, TN | 3 |
| Wake Forest Baptist Emergency Providers | Winston-Salem, NC | 3 |
| Altamed Health Services Corporation | Los Angeles, CA | 3 |
| Altru Health System | Grand Forks, ND | 3 |
| Emergency Medicine Professionals, PA | Daytona Beach, FL | 3 |
| Independent Physicians Resource, Inc. | Atlanta, GA | 3 |
| Children's Hospital | New Orleans, LA | 3 |
| Cogent Healthcare of Decatur, PLLC | Tacoma, WA | 3 |
| USACS Medical Group of California, Inc. | Canton, OH | 3 |
| Associated Physicians Of Harvard Med Faculty Physicians At Bidmc, Inc. | Woburn, MA | 3 |
| Seattle Children'S Hospital | Seattle, WA | 3 |
| Southeastern Emergency Services, PC | Knoxville, TN | 3 |
| Rochester General Hospital | Rochester, NY | 3 |
| Canton-Potsdam Hospital | Potsdam, NY | 3 |
| St. John Emergency Services, PC | Knoxville, TN | 3 |
| Children's Hospital Corporation | Boston, MA | 3 |
| The University of Texas Health Center at Tyler | Tyler, TX | 3 |
| Exigence Medical of New York, PLLC | Knoxville, TN | 3 |
| Dayton Children'S Specialty Physicians, Inc. | Dayton, OH | 2 |
| University of Alabama Health Services Foundation, PC | Birmingham, AL | 2 |
| University of Arkansas for Medical Sciences | Little Rock, AR | 2 |
| Physician Affiliate Group Of Ny, PC | New York, NY | 2 |
| Emergency Physician Associates of Massachusetts, P.C | Knoxville, TN | 2 |
| Mayo Clinic | Rochester, MN | 2 |
| National Hospitalist Services, PC | Lafayette, LA | 2 |
| Gilford Sound Emergency Physicians, LLC | Nashville, TN | 2 |
| Wake Forest University Baptist Medical Center | Winston Salem, NC | 2 |
| ECC Hospitalist Services, PC | Knoxville, TN | 2 |
| Affinity Physicians, LLC | Providence, RI | 2 |
| Allegheny Clinic | Pittsburgh, PA | 2 |
| Emergency Medicine Services of Maine, LLC | Knoxville, TN | 2 |
| Charleston Area Medical Center, Inc. | Charleston, WV | 2 |
| Aurora Medical Group, Inc. | Milwaukee, WI | 2 |
| Mercy Clinics, Inc. | Des Moines, IA | 2 |
| Massachusetts General Physicians Organization | Somerville, MA | 2 |
| Upstate Emergency Medicine, Inc. | Syracuse, NY | 2 |
| Integrative Emergency Services Physician Group - Houston, PLLC | Dallas, TX | 2 |
| Commonwealth Healthcare Corporation | Saipan, | 2 |
| Vituity - Nevada Koury & Partners, PLLC | Emeryville, CA | 2 |
| UMass Memorial Medical Group, Inc. | Worcester, MA | 2 |
| Envision Physician Services, LLC | Nashville, TN | 2 |
| Hawaii Emergency Physicians Associated, Inc. | Kailua, HI | 2 |
| Touchette Regional Hospital, Inc. | Cahokia Heights, IL | 2 |
| Brigham and Women's Physicians Organization, Inc | Somerville, MA | 2 |
| Preston Memorial Hospital Corporation | Kingwood, WV | 2 |
| Fremont Emergency Services (Scherr), Ltd. | Knoxville, TN | 2 |
| Hospitalist Medicine Physicians of Texas - Houston, PLLC | Tacoma, WA | 2 |
| Saint Vincent Medical Education And Research Insitute, Inc. | Erie, PA | 2 |
| Victoria Emergency Associates, L.L.C. | Austin, TX | 1 |
| The University of Virginia | Charlottesville, VA | 1 |
| Shannon Clinic | San Angelo, TX | 1 |
| Kettering Independent Medical Group, Inc. | Kettering, OH | 1 |
| Wake Forest University Health Sciences | Winston-Salem, NC | 1 |
| Core Clinical Management, LLC | Atlanta, GA | 1 |
| Vituity - Michigan, PLLC | Emeryville, CA | 1 |
| University Hospitals Cleveland Medical Center | Cleveland, OH | 1 |
| OSF Multi-Specialty Group | Peoria, IL | 1 |
| University Hospitals Medical Group, Inc. | Cleveland, OH | 1 |
| Siouxland Hospitalists PLLC | Dakota Dunes, SD | 1 |
| The University of Iowa | Iowa City, IA | 1 |
| Coquille Valley Hospital District | Coquille, OR | 1 |
| IES Alabama PLLC | Dallas, TX | 1 |
| Southern Illinois Medical Services | Carbondale, IL | 1 |
| Vituity-New York Medical Group PLLC | Emeryville, CA | 1 |
| Exigence Medical of Binghamton, PLLC | Knoxville, TN | 1 |
| T.M. Carr, M.D., P.C. | Nashville, TN | 1 |
| Integritas Emergency Providers LLC | Carbondale, IL | 1 |
| Inphynet Primary Care Physicians - Southeast, Professional Corporation | Knoxville, TN | 1 |
| The University Of Kansas Medical Center | Kansas City, KS | 1 |
| Monument Health Rapid City Hospital, Inc. | Rapid City, SD | 1 |
| Aloha Critical Care Associates, LLP | Mililani, HI | 1 |
| Intensive Care Consortium, Inc. | Boca Raton, FL | 1 |
| Great Lakes Physician Practice, P.C. | Pittsburgh, PA | 1 |
| Ies Er Oklahoma LLC | Dallas, TX | 1 |
| Albany Medical College | Albany, NY | 1 |
| Greenbrier Emergency Services, Inc. | Knoxville, TN | 1 |
| The Brookdale Hospital Medical Center | Brooklyn, NY | 1 |
| Iowa Emergency Services LLC | Knoxville, TN | 1 |
| Emergency Medicine Services of FL, LLC | Miami, FL | 1 |
| Three Crosses Regional Hospital, LLC | Las Cruces, NM | 1 |
| Carolinas Physicians Network, Inc. d/b/a Atrium Health Medical Group | Charlotte, NC | 1 |
| USA HealthCare Management, LLC | Mobile, AL | 1 |
| Mercy Clinic Fort Smith Communities | Fort Smith, AR | 1 |
| MedStar Medical Group II, LLC | Columbia, MD | 1 |
| Kern County Hospital Authority | Bakersfield, CA | 1 |
| Southeastern Hospitalist Services, PC | Knoxville, TN | 1 |
| Chase Dennis Emergency Medical Group , Inc. | Memphis, TN | 1 |
| West Tennessee Healthcare | Jackson, TN | 1 |
| Lubbock County Hospital District | Lubbock, TX | 1 |
| Orlando Health Medical Group, Inc. | Orlando, FL | 1 |
| Trinity Health of New England Provider Network Organization, Inc. | Hartford, CT | 1 |
| Academic Medicine Services, Inc. | Amherst, NY | 1 |
| Arnot Ogden Medical Center | Elmira, NY | 1 |
| Emergency Associates of Central Texas, PA | Knoxville, TN | 1 |
| Hospital Service District 1A Parish of Richland State of Louisiana | Delhi, LA | 1 |
| Maimonides Medical Center | Brooklyn, NY | 1 |
| CEP America-Arizona, LLP | Emeryville, CA | 1 |
| Texas Midwest Emergency Physicians, PA | Abilene, TX | 1 |
| Dayton Children's Hospital | Dayton, OH | 1 |
| Christus Trinity Clinic New Mexico, LLC | Alamogordo, NM | 1 |
| Jackson County Hospital District | Marianna, FL | 1 |
| Advocate Health and Hospitals Corporation | Oak Brook, IL | 1 |
| Tufts Medical Center EP LLC | Mansfield, MA | 1 |
| Independent Emergency Physicians | Farmington Hills, MI | 1 |
| Miami Valley Emergency Specialists, LLC | Dayton, OH | 1 |
| Nor Lea Hospital District | Lovington, NM | 1 |
| Clark Emergency Physicians, PLLC | Winchester, KY | 1 |
| Northeast ER Physicians PA | Knoxville, TN | 1 |
| University of Maryland College Park | College Park, MD | 1 |
| Endeavor Health Medical Group | Evanston, IL | 1 |
| EDS-I Homansky Practices of Nevada, P.C. | Nashville, TN | 1 |
| CEP America-Illinois, LLP | Emeryville, CA | 1 |
| Mercy Hospital of Devils Lake | Devils Lake, ND | 1 |
| Emergency Medicine Services of NH, LLC | Nashville, TN | 1 |
| Nationwide Children's Hospital | Columbus, OH | 1 |
| ThedaCare, Inc. | Neenah, WI | 1 |
| Henry Ford Health System | Detroit, MI | 1 |
| University of Utah | Salt Lake City, UT | 1 |
| The Permanente Medical Group, Inc. | Pleasanton, CA | 1 |
| MyMichigan Medical Center Sault | Sault Ste. Marie, MI | 1 |
| CEP America-Oregon, LLP | Emeryville, CA | 1 |
| Saint Anthony Hospital | Chicago, IL | 1 |
| Welia Health | Mora, MN | 1 |
| Sound Physicians Emergency Medicine of Illinois, LLC | Tacoma, WA | 1 |
| The Nemours Foundation - Nemours Children's Health | Jacksonville, FL | 1 |
| Berkshire Medical Center | Pittsfield, MA | 1 |
| RichBend Emergency Physicians, PLLC | Atlanta, GA | 1 |
| East Carolina University | Greenville, NC | 1 |
| Emergency Coverage Sevrices, PC | Knoxville, TN | 1 |
| Otero County Hospital Association | Alamogordo, NM | 1 |
| Tacoma Emergency Medicine Associates, P.C. | Knoxville, TN | 1 |
| Chase Dennis Emergency Medical Group Inc. | Knoxville, TN | 1 |
| Wellspan Medical Group | York, PA | 1 |
| Columbia University | New York, NY | 1 |
| New Lexington Clinic, P.S.C. | Lexington, KY | 1 |
| Texas EM-I Medical Services, P.A. | Nashville, TN | 1 |
| Emergency Medicine Services of Maine | Knoxville, TN | 1 |
| DeGara APP, PLLC | Brentwood, TN | 1 |
| Rutgers, The State University of New Jersey | Newark, NJ | 1 |
| Florida Emergency Physicians Kang & Associates, M.D., Inc | Knoville, TN | 1 |
| Gwinnett Emergency Specialists, P.C. | Conshohocken, PA | 1 |
| Vituity - Indiana, LLC | Emeryville, CA | 1 |
| Mass General Brigham Incorporated | Somerville, MA | 1 |
| Saint Vincent Medical Education And Research Institute | Erie, PA | 1 |