About
With expertise in Diagnostic and Interventional Radiology, Dr. Robert Barnes Mason provides crucial diagnostic insights to referring physicians. Practicing at medical imaging facilities in Barrie, ON, he supports various clinical departments by offering advanced imaging interpretation and image-guided procedures. Dr. Mason's practice adheres to the high standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring quality care and accurate diagnostics for patients requiring imaging services.
He graduated with a Medical Degree from the University of Toronto in 1992 and has been practicing as a Radiologist since 1997, accumulating over 27 years of experience. Dr. Mason is certified as a Royal College of Physicians and Surgeons of Canada (RCPSC) Specialist in Radiology, demonstrating his commitment to excellence and ongoing professional development in the field of medical imaging.
Dr. Mason's clinical philosophy emphasizes clarity and accuracy in diagnosis, with a strong focus on patient safety and effective communication. He is dedicated to providing precise interpretations to assist in effective treatment planning. Fluent in English, he strives to deliver comprehensive radiology services to the Barrie community, supporting the diagnostic needs of patients and healthcare providers alike.

- Fluoroscopy Procedure Interpretation: Interpreting real-time X-ray imaging (fluoroscopy) used during procedures like barium studies (GI tract), hysterosalpingograms, or to guide certain injections.
- X-ray Interpretation (Radiography): Expert analysis and reporting of X-ray images for diagnosing conditions related to bones (fractures, arthritis), chest (pneumonia, lung nodules), and abdomen.
- Computed Tomography (CT) Scan Interpretation: Detailed review and reporting of cross-sectional CT images for evaluating trauma, cancer staging, vascular disease, infections, and other complex conditions throughout the body.
- Magnetic Resonance Imaging (MRI) Interpretation: Specialized analysis and reporting of MRI scans, providing detailed images of soft tissues, brain, spine, joints, abdomen, and pelvis without using ionizing radiation.
- Ultrasound Interpretation (Sonography): Evaluation and reporting of diagnostic ultrasound images for assessing organs (e.g., liver, kidneys, thyroid, reproductive organs), blood flow, pregnancies, and musculoskeletal conditions.
Note: This list provides an overview of common radiology services. Dr. Mason interprets a wide range of medical imaging studies and/or performs procedures as indicated by your referring physician. Specific subspecialty services depend on the physician's focus and training.
All medical imaging services are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO).
Dr. Mason's practice is primarily based at medical imaging facilities located in the Downtown Barrie area, within the East Bayfield neighborhood. The facilities are conveniently situated near Park Place Shopping Centre and the South Barrie GO Station, making access straightforward via public transit, including Barrie Transit. Parking is available at the facility, and the premises are wheelchair accessible, ensuring ease of access for all patients.
- Are imaging studies interpreted by Dr. Mason covered by Ontario Health Insurance Plan (OHIP) in ON?
- Medically necessary diagnostic imaging studies interpreted by a Radiologist like Dr. Mason are typically covered by Ontario Health Insurance Plan (OHIP) in ON when prescribed by your referring physician and performed at an accredited medical facility. Some advanced or specialized interventional procedures may also be covered. It's always best to confirm specific coverage details with Ontario Health Insurance Plan (OHIP) or the imaging clinic/hospital.
- Do I need a referral from my doctor to have an imaging study interpreted by Dr. Mason?
- Yes, almost all diagnostic imaging tests (like X-rays, CT, MRI, ultrasounds) and interventional radiology procedures require a formal request or requisition from your family doctor, specialist, or other authorized healthcare provider. Dr. Mason provides expert interpretation of these physician-ordered studies.
- What's the difference between an MRI and a CT scan?
- Both are advanced imaging tests, but they use different technologies. CT (Computed Tomography) scans use X-rays and a computer to create detailed cross-sectional images; they are excellent for bone, lungs, abdomen, and detecting acute bleeding. MRI (Magnetic Resonance Imaging) uses a powerful magnetic field and radio waves to create highly detailed images of soft tissues like the brain, spine, joints, and internal organs, without using ionizing radiation. Dr. Mason or your referring doctor will determine which test is best for your specific medical question.
- What is Interventional Radiology?
- Interventional Radiology is a subspecialty of radiology where physicians use medical imaging (like X-ray, CT, ultrasound, MRI) to guide minimally invasive procedures for diagnosis (e.g., biopsies) or treatment of a wide range of conditions in nearly every organ system. These procedures are often alternatives to open surgery. Dr. Mason specializes in these image-guided procedures. He performs a variety of minimally invasive interventions to diagnose and treat complex medical conditions using advanced imaging guidance.
201 Georgian Drive
Barrie, ON L4M 6M2
Phone: (705) 728-9090 | Fax: (705) 739-5629
The facility is wheelchair accessible.
Dr. Mason is a licensed physician regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Medicine Act, 1991 in ON. Imaging services are typically provided based on referrals from other physicians.
Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/Mason-Robert-Barnes/0051283-65262