Dr. Timothy Ian Macnab – Radiologist | St Catharines, ON

With expertise in Diagnostic and Interventional Radiology, Dr. Timothy Ian Macnab provides crucial diagnostic insights to referring physicians. Practicing at medical facilities in St. Catharines, ON, he supports various clinical departments by delivering high-quality imaging services. He adheres to the standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring safe and effective patient care. Dr. Macnab's role as a Radiologist involves interpreting complex medical images to assist in accurate diagnoses and guiding minimally invasive procedures when indicated. His focus is on providing comprehensive diagnostic support to patients requiring imaging or image-guided treatments.

Dr. Macnab graduated with his Medical Degree from the University of Toronto in 1986. He has been practicing as a Radiologist for over 27 years, since 1997. He is certified as a Royal College of Physicians and Surgeons of Canada (RCPSC) Specialist in Radiology, reflecting his extensive training and commitment to excellence in his field.

His clinical philosophy emphasizes technical proficiency combined with a reassuring approach to patient care. Dr. Macnab is dedicated to achieving diagnostic accuracy and clarity in his reports, ensuring that referring physicians and patients receive reliable information. He primarily communicates in English and is committed to providing accessible, expert radiological services in the St. Catharines community.

• Mammography and Breast Imaging Interpretation: Expert review and reporting of mammograms (including tomosynthesis/3D mammography) and breast ultrasound for cancer screening, diagnosis, and follow-up.
• Fluoroscopy Procedure Interpretation: Interpreting real-time X-ray imaging (fluoroscopy) used during procedures like barium studies (GI tract), hysterosalpingograms, or to guide certain injections.
• 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.
• 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.
• 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.

Note: This list provides an overview of common radiology services. Dr. Macnab 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. Macnab primarily practices at medical imaging facilities situated in the central St. Catharines area, easily accessible from local points of interest such as the Port Dalhousie waterfront and nearby parks. The facilities are conveniently reachable via public transit routes serving the region. Patients will find the location accessible and welcoming. The facility is wheelchair accessible. Parking is available at the facility.

Are imaging studies interpreted by Dr. Macnab covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary diagnostic imaging studies interpreted by a Radiologist like Dr. Macnab 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. Macnab?

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. Macnab provides expert interpretation of these physician-ordered studies.

How long will my imaging test take?

The duration depends on the type of scan. A simple X-ray might take only a few minutes. Ultrasounds can range from 15 to 45 minutes. CT scans are usually quick once you're positioned (actual scan time is often under a minute), but total appointment time can be longer. MRI scans are typically the longest, often 30 to 60 minutes or more per body part being imaged.

What does a Radiologist actually do? Do they take the pictures?

A Radiologist (like Dr. Macnab) is a medical doctor who has completed extensive specialty training in interpreting all types of medical images (X-rays, CT, MRI, ultrasound, nuclear medicine, etc.) to diagnose diseases and injuries. They provide a written report of their findings to your doctor. While skilled technologists operate the imaging equipment to take the pictures, the Radiologist is the expert physician who analyzes these images to provide a diagnosis. Some Radiologists (Interventional Radiologists) also perform image-guided minimally invasive procedures.

How will I get the results of my imaging exam?

After your imaging exam is completed, Dr. Macnab (or a colleague Radiologist) will carefully review the images and prepare a detailed report. This report is sent directly to the physician who ordered your test (your referring doctor). Your referring doctor will then discuss the results with you, typically at a follow-up appointment, and explain what they mean in the context of your overall health. Please allow a few business days for the report to reach your doctor.

Suite 615, 1-464 Welland Ave
St Catharines, ON L2M 5V4

Phone: (905) 684-6388 | Fax: (905) 684-6389

The facility is wheelchair accessible.

Dr. Macnab 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/Macnab-Timothy-Ian/0042846-56824