| Business | Phone |
| Markham Mammography Clinic Inc 262 Main St N, Markham L3P 1Y7 | (905) 472-2713 |
| Mctu Diagnostics Ltd 10 Unionville Gate, Markham L3R 0W7 | (905) 479-3945 |
| Med Scan Ultrasound Svc Ltd 4300 Steeles Ave E #P89, Markham L3R 0Y5 | (905) 947-8267 |
| Rds Diagnostics Ltd 377 Church St, Markham L6B 1A1 | (905) 472-4915 |