| Centre for Addiction and Mental Health, CAMH Support and Information Services | Toronto |
| Circulate Cardiac & Vascular Centre | Burlington |
| COVID-19 Assessment Centres and Testing Options, Halton Region | Halton Region |
| Credit Valley Diagnostic Centre | Milton |
| Diagnostic Imaging, Halton Hills | Halton Hills |
| Diagnostic Imaging, Oakville | Oakville |
| Dynacare, Oakville - Old Bronte Rd, Laboratory and Health Services Centre | Oakville |
| Dynacare, Oakville - Bristol Circle, Laboratory and Health Services Centre | Oakville |
| Dynacare, Acton - Eastern Rd, Medical Laboratory Services | Halton Hills |
| Dynacare, Milton, Laboratory and Health Services Centre | Milton |
| Dynacare, Oakville - Oak Park Blvd, Laboratory and Health Services Centre | Oakville |
| Gam Diagnostic Imaging, Oakville - Trafalgar Rd, Diagnostic Imaging | Oakville |
| Gam Diagnostic Imaging, Oakville - Hospital Gate, Diagnostic Imaging | Oakville |
| Halton Healthcare, Bone Research and Education Centre | Oakville |
| Halton Healthcare, Georgetown Hospital, Diagnostic Imaging | Halton Hills |
| Halton Healthcare, Georgetown Hospital, Geriatric and Senior Specialty Services - Geriatric Assessment Clinic | Halton Hills |
| Halton Healthcare, Georgetown Hospital, Laboratory Services | Georgetown |
| Halton Healthcare, Milton District Hospital, Diagnostic Imaging | Milton |
| Halton Healthcare, Milton District Hospital, Geriatric and Senior Specialty Services - Geriatric Assessment Clinic | Milton |
| Halton Healthcare, Milton District Hospital, Laboratory Services | Milton |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Colorectal Diagnostic Assessment Program | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Comprehensive Spasticity Management Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Diagnostic Imaging | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Geriatric and Senior Specialty Services - Geriatric Assessment Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Laboratory Services | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Physiatry Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Rapid Access Clinic | Oakville |
| Halton Healthcare, Oakville Trafalgar Memorial Hospital, Sleep Laboratory | Oakville |
| Homewood Health Centre | Guelph |
| Joseph Brant Hospital, Diagnostic Imaging | Burlington |
| Joseph Brant Hospital, Medical Diagnostic Unit (MDU) | Burlington |
| KMH Cardiology Centres | Burlington |
| LifeLabs, Oakville - Trafalgar Rd, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - Speers Rd W, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - Rebecca St, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - River Glen Blvd, Medical Laboratory Services | Oakville |
| LifeLabs, Milton - Commercial St, Medical Laboratory Services | Milton |
| LifeLabs, Milton - Bronte St S, Medical Laboratory Services | Milton |
| LifeLabs, Georgetown - Sinclair Ave, Medical Laboratory Services | Halton Hills |
| LifeLabs, Georgetown - Hillside Dr, Medical Laboratory Services | Halton Hills |
| LifeLabs, Oakville - Hospital Gate, Medical Laboratory Services | Oakville |
| LifeLabs, Colorectal Cancer Screening | Mississauga |
| Medical Laboratories, Burlington | Burlington |
| Medical Laboratories, Halton Hills | Halton Hills |
| Medical Laboratories, Milton | Milton |
| Medical Laboratories, Oakville | Oakville |
| MedSleep, Respirology and Sleep Medicine | Milton |
| Mississauga Halton Central West Regional Cancer Program, Trillium Health Partners - Credit Valley Hospital - Carlo Fidani Regional Cancer Centre | Mississauga |
| Mississauga Halton Central West Regional Cancer Program, Oakville Trafalgar Memorial Hospital, Cancer Care Clinic | Oakville |
| Mississauga Halton Central West Regional Cancer Program, Trillium Health Partners - Credit Valley Hospital - Carlo Fidani Regional Cancer Centre, Diagnostic Assessment Program (DAP) | Mississauga |
| Mississauga Institute for Neurological Disorders and Stroke (MINDS) | Erin Mills |
| Oakville Cardiologists, Dorval site | Oakville |
| Oakville Cardiologists, North site | Oakville |
| Oakville Endoscopy Centre | Oakville |
| One Vascular Imaging, Oakville | Oakville |
| Ontario Diagnostic Centres, Oakville, Diagnostic Imaging | Oakville |
| Ontario Diagnostic Centres, Milton, Diagnostic Imaging | Milton |
| Ontario Medical Imaging, Georgetown, Diagnostic Imaging | Georgetown |
| Ontario Mobile Imaging, Mobile Ultrasound | Mississauga |
| Peak Sleep, Burlington, Sleep Study and Consultation | Burlington |
| Peak Sleep, Oakville, Sleep Study and Consultation | Oakville |
| Provis-Rudd Clinic, Oakville, Endoscopy and Gastroenterology | Oakville |
| Shifa Cardiac Care | Mississauga |
| StL Diagnostic Imaging Mobile X-Ray and Ultrasound Services | Burlington |
| Trafalgar Cardiology | Oakville |
| Trillium Health Partners, Queensway Health Centre, Centre for Seniors' Medical Psychiatry - Outpatient Program | Etobicoke Central |
| True North Imaging, Oakville, Diagnostic imaging services | Oakville |
| WELL Health Diagnostic Centres, Cardiology and Diagnostic Imaging | Milton |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Brant St, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Appleby Line, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Fairview St, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-ray and Ultrasound, Burlington - Walker's Line, Diagnostic Imaging | Burlington |
| Wentworth-Halton X-Ray and Ultrasound, Oakville - Speers Rd, Diagnostic Imaging | Oakville |
| Wentworth-Halton X-Ray and Ultrasound, Oakville - Old Bronte Rd, Diagnostic Imaging | Oakville |
