Dr. John Peter Donnellan – Radiologist | Hamilton, ON

With expertise in Diagnostic and Interventional Radiology, Dr. John Peter Donnellan provides crucial diagnostic insights to referring physicians. Practicing at medical imaging facilities in Hamilton, ON, he supports various clinical departments by delivering high-quality imaging interpretation and image-guided procedures. Dr. Donnellan’s practice adheres strictly to the standards set by the College of Physicians and Surgeons of Ontario (CPSO), ensuring patient safety and diagnostic accuracy. His role as a Radiologist involves comprehensive evaluation of medical images, assisting in accurate diagnosis and effective treatment planning for patients requiring diagnostic imaging or image-guided interventions.

Dr. Donnellan graduated with a Medical Degree from the National University of Ireland in 2009. He has been practicing as a Radiologist with over 6 years of specialized experience since 2018. He is certified as a CPSO Recognized Specialist, demonstrating his commitment to maintaining high standards of clinical excellence and continuous professional development in the field of radiology.

His clinical philosophy centers on patient safety, diagnostic precision, and effective communication. Dr. Donnellan is dedicated to providing thorough and accurate interpretations of medical imaging studies to support optimal patient outcomes in Hamilton. He communicates fluently in English, ensuring clear and compassionate interactions with patients and healthcare colleagues alike.

• 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.
• 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.
• Bone Densitometry (DEXA) Scan Interpretation: Analyzing DEXA scans to measure bone mineral density, assess osteoporosis risk, and monitor treatment effectiveness.

Note: This list provides an overview of common radiology services. Dr. Donnellan 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. Donnellan primarily practices at medical imaging facilities located in the Westdale and Ainslie Wood neighborhoods of Hamilton, near the McMaster University area. The facilities are conveniently situated close to Lime Ridge Mall and are accessible via Hamilton Street Railway (HSR). The practice location ensures easy access for patients from the surrounding community. The facility is wheelchair accessible. Parking is available at the facility.

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

Medically necessary diagnostic imaging studies interpreted by a Radiologist like Dr. Donnellan 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. Ontario OHIP covers standard diagnostic imaging when appropriately requisitioned.

Do I need a referral from my doctor to have an imaging study interpreted by Dr. Donnellan?

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. Donnellan provides expert interpretation of these physician-ordered studies, ensuring diagnostic accuracy and patient safety.

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.

Why might I need an injection of 'contrast' or 'dye' for my scan?

Contrast material (often called 'dye', though it's usually clear) is a special substance that can be injected intravenously (or sometimes taken orally or rectally) to help certain organs, blood vessels, or tissues stand out more clearly on imaging exams like CT or MRI. It can help Dr. Donnellan see abnormalities that might otherwise be hidden. Not all scans require contrast; it's used when it can provide important additional diagnostic information.

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

A Radiologist (like Dr. Donnellan) 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. Donnellan (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.

1280 Main St W
Hamilton, ON L8S 4L8

Phone: (905) 521-2100

The facility is wheelchair accessible.

Dr. Donnellan 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/Donnellan-John-Peter/0309366-110306