| Quest Diagnostics Llc Clinical Laboratory · Wallingford, CT | 59 | 241 |
| Seema Bakhru Diagnostic Radiology · Hartford, CT | 49 | 97 |
| Todd Everett Diagnostic Radiology · Danbury, CT | 38 | 169 |
| John Spera Radiation Oncology · Danbury, CT | 34 | 685 |
| Western Connecticut Health Network Affiliates, Inc. Independent Diagnostic Testing Facility (IDTF) · Danbury, CT | 33 | 95 |
| Michael Cohenuram Hematology-Oncology · Danbury, CT | 28 | 121 |
| Jessica Dodge Pathology · Danbury, CT | 28 | 91 |
| Adam Welber Diagnostic Radiology · Danbury, CT | 26 | 54 |
| HARTFORD HEALTHCARE LABORATORIES | 25 | 107 |
| Barbara Blanco Diagnostic Radiology · Danbury, CT | 24 | 65 |
| Michael Logue Cardiology · Bridgeport, CT | 23 | 80 |
| Kirt Frederickson Diagnostic Radiology · Danbury, CT | 22 | 55 |