| Yale University | New Haven | 2,645 |
| Hartford Healthcare Medical Group Specialists PLLC | Bridgeport | 1,588 |
| Northeast Medical Group Inc | Bridgeport | 1,360 |
| Hartford Hospital | Hartford | 1,044 |
| Nuvance Health Medical Practice CT Inc | Danbury | 747 |
| Trinity Health of New England Provider Network Organization Inc | Hartford | 653 |
| University of Connecticut Health Center | Farmington | 639 |
| Rehabilitation Associates Inc | Fairfield | 529 |
| Stamford Health Medical Group Inc | Stamford | 444 |
| Integrated Anesthesia Associates LLC | Hartford | 409 |
| The Hospital of Central Connecticut at New Britain General and Bradley | New Britain | 399 |
| Physicians for Women's Health, LLC | Danbury | 318 |
| Starling Physicians, PLLC | Wethersfield | 283 |
| Prospect CT Medical Foundation Inc | Manchester | 282 |
| Cornell Scott Hill Health Corporation | New Haven | 271 |
| Hartford Healthcare Medical Group Inc | Putnam | 267 |
| State of Connecticut | Middletown | 260 |
| The William W Backus Hospital | Norwich | 249 |
| Connecticut Gi PLLC | Wallingford | 248 |
| Middlesex Hospital | Middletown | 234 |
| Ptsma Inc | Ansonia | 224 |
| Prohealth Physicians PC | Winsted | 213 |
| The Charlotte Hungerford Hospital | Torrington | 200 |
| Hartford Healthcare Urgent Care Centers LLC | Wethersfield | 198 |
| Hdc Care Solutions LLC | Middletown | 197 |
| Anb-Ptsma Holdings Inc | Middletown | 196 |
| Midstate Medical Center | Meriden | 186 |
| Mhs Primary Care, Inc. | Essex | 180 |
| Connecticut Orthopaedic Specialists PC | Fairfield | 180 |
| Woodland Anesthesia Associates PC | Hartford | 174 |
| Step Up Care PC LLC | Hartford | 169 |
| Bristol Hospital Multi Specialty Group, Inc. | Bristol | 148 |
| Community Health Center Inc | New London | 144 |
| Value Based Long Term Care H PC | Middletown | 144 |
| Connecticut Children's Specialty Group, Inc | Hartford | 137 |
| Bridgeport Hospital | Bridgeport | 136 |
| Griffin Faculty Physicians Inc | Derby | 134 |
| Hhc Physician Services PLLC | Hamden | 132 |
| Urgent Care Medical Associates, LLC | Brookfield | 114 |
| Wheeler Clinic Inc | New Britain | 108 |
| McLean Fund | Simsbury | 107 |
| Orthopedic Associates of Hartford,pc | Rocky Hill | 105 |
| Connecticut Imaging Partners LLC | Enfield | 104 |
| Midstate Radiology Associates LLC | Bristol | 92 |
| Day Kimball Medical Group Inc | Putnam | 89 |
| Westchester Health Medical PC | Stamford | 88 |
| Orthoconnecticut PLLC | New Milford | 84 |
| Impact Health PC | Orange | 80 |
| Optimus Health Care Inc | Bridgeport | 79 |
| Uconn Health Community Network Medical Group, Inc. | Waterbury | 78 |
| Greenwich Hospital | Greenwich | 76 |
| United Community and Family Services, Inc | Norwich | 73 |
| Myeyedr Optometry of Connecticut LLC | Ridgefield | 72 |
| Fox Rehab PT CT, LLC | Southbury | 72 |
| Ivyrehab Connecticut Inc | Avon | 69 |
| Harvest Healthcare LLC | Avon | 69 |
| Connecticut Mental Health Specialists Inc | Farmington | 68 |
| Expressable Therapy PC | Greenwich | 67 |
| Mc Diagnostic of Connecticut, P.C. | Glastonbury | 67 |
| Prime Healthcare, PC | Avon | 67 |
| Value Based Long Term Care K PC | Farmington | 65 |
| Fox Rehab OT CT LLC | Southbury | 64 |
| Windham Community Memorial Hospital Inc | Willimantic | 64 |
| Orthopaedic Specialty Group PC | Fairfield | 60 |
| Radiology and Imaging Inc | Enfield | 59 |
| Meriden Imaging Center Inc | Cheshire | 57 |
| Main Street Radiology at Bayside LLC | Ridgefield | 56 |
| South-West Community Health Center Inc | Bridgeport | 55 |
| Urgent Care Medical Center LLC | Ellington | 53 |
| Community Health Resources, Inc. | Danielson | 53 |
| Radiology Associates of Main Street PC | Ridgefield | 52 |
| Stamford Anesthesiology Services PC | Stamford | 51 |
| Danbury Hospital | New Milford | 50 |
| Lawrence and Memorial Hospital Inc. | New London | 49 |
| Integrated Rehabilitation Services Limited Partnership | Vernon | 49 |
| Bridgeport Radiological Associates LLC | Bridgeport | 48 |
| Anesthesia Associates of Willimantic, PC | Willimantic | 48 |
| Norwich Orthopedic Group PC | Niantic | 47 |
| Hospital for Special Care | New Britain | 46 |
| Premier Imaging LLC | Norwalk | 46 |
| Advanced Imaging Specialists LLC | Hartford | 46 |
| Fair Haven Community Health Clinic Inc | New Haven | 45 |
| Connecticut Institute for Communities Inc | Danbury | 44 |
| Yale New Haven Hospital | New Haven | 44 |
| Planned Parenthood of Southern New England Inc | Norwich | 43 |
| Collins Medical Associates 2 PC | Hartford | 43 |
| Staywell Health Care Inc. | Waterbury | 43 |
| Gaylord Hospital, Inc. | Madison | 42 |
| Greenwich Anesthesiology Associates PC | Greenwich | 42 |
| St. Vincents Urgent Care LLC | Monroe | 42 |
| Proactive Health Care Management LLC | Naugatuck | 42 |
| Connecticut Behavioral Health Assoc PC | Hamden | 41 |
| Hospitalist Medicine Physicians of Connecticut LLC | Vernon | 40 |
| Nems PLLC | Putnam | 39 |
| First Choice Health Centers Inc | East Hartford | 39 |
| Afc Physicians of Connecticut PC | West Hartford | 39 |
| Northeast Emergency Medicine Specialists LLC | Willimantic | 39 |
| Connecticut Skinhealth LLP | Hamden | 39 |
| Charter Anesthesiology LLC | Bristol | 37 |
| Danbury Radiological Associates, PC | Danbury | 37 |