About
With expertise in Diagnostic and Interventional Radiology, Dr. John Charles Clarke provides crucial diagnostic insights to referring physicians. Practicing at medical facilities in Ottawa, ON, he supports various clinical departments by offering comprehensive services in Radiology. Dr. Clarke’s practice is committed to maintaining the highest standards of care in accordance with the College of Physicians and Surgeons of Ontario (CPSO), ensuring accurate diagnosis and patient safety. His role primarily involves interpreting complex medical images to assist in clinical decision-making for patients requiring diagnostic imaging or image-guided procedures.
Dr. Clarke graduated with a Medical Degree from Queen's University in 1998 (Canada). He has been practicing as a Radiologist for over 21 years since 2003. He is certified as a RCPSC Specialist, reflecting his extensive training and expertise in the field of radiology. His certification underscores his commitment to maintaining professional excellence and adherence to Canadian medical standards.
His clinical philosophy is grounded in being technically proficient and reassuring, with a focus on diagnostic accuracy and patient-centered care in Ottawa. Dr. Clarke communicates fluently in English, ensuring clear and compassionate interactions with patients and colleagues alike, always prioritizing safety and precision in every case.
- 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.
- 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.
- 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.
- 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. Clarke 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. Clarke's primary practice is based at St. Michael's Hospital, located in the Bells Corners area of Ottawa, ON. The facility is situated near the scenic Dow's Lake Pavilion and the vibrant Little Italy district (Corso Italia). Patients can access the location via OC Transpo, including the O-Train LRT and bus services, providing convenient transportation options. The facility is wheelchair accessible. Parking is available at the facility.
- Are imaging studies interpreted by Dr. Clarke covered by Ontario Health Insurance Plan (OHIP) in ON?
- Medically necessary diagnostic imaging studies interpreted by a Radiologist like Dr. Clarke 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. Clarke?
- 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. Clarke provides expert interpretation of these physician-ordered studies.
- 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. Clarke specializes in these image-guided procedures.
- 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. Clarke or your referring doctor will determine which test is best for your specific medical question.
- What does a Radiologist actually do? Do they take the pictures?
- A Radiologist (like Dr. Clarke) 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.
- Can I speak to Dr. Clarke directly about my images?
- Typically, the Radiologist's detailed report is sent to your referring physician, who is best positioned to discuss the results with you in the context of your overall health and other test findings. While direct consultation with the interpreting Radiologist is uncommon for routine diagnostic imaging, for Interventional Radiology procedures, Dr. Clarke (if performing the procedure) would discuss it with you beforehand.
St. Michael's Hospital
3045 Baseline Road
Ottawa, ON K2H 8P4
Phone: (613) 721-2000
The facility is wheelchair accessible.
Dr. Clarke 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/Clarke-John-Charles/0150162-72577