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Specialists dedicated to your heart health.

Meet our team at the Lanaudière Cardiology Clinic.

Dr. Justin Rayes

Cardiologist — Specialist in cardiovascular disease


Dr. Justin Rayes is a cardiologist certified by the Royal College of Physicians and Surgeons of Canada, with a strong background in both clinical care and academic medicine. He earned his medical degree from McGill University in 2014, followed by residency training in internal medicine at McGill (2017) and a cardiology fellowship at the Université de Montréal, completed in 2020. 

Dr. Rayes currently practices at the Centre Hospitalier De Lanaudière (CHDL) in Joliette, where he also serves as the coordinating physician for inpatient care. His practice focuses on delivering high-quality, evidence-based treatment for a wide range of cardiac conditions.

Beyond his clinical work, Dr. Rayes is actively involved in medical education and research. He supervises medical trainees from Université Laval and contributes to ongoing clinical studies in cardiovascular medicine, helping to advance the field. He is a frequent speaker and mentor, recognized for his dedication to both patients and future healthcare professionals.

Clinical Experience

Since March 2025, Founder and Attending Cardiologist at the Lanaudière Cardiology Clinic

  • Creation and full management of the clinic: organizational structure, medical services, equipment selection, and staff recruitment
  • Specialized consultations (coronary artery disease, atrial fibrillation, heart failure, etc.)
  • Performance of diagnostic examinations: electrocardiograms, stress tests, cardiac echocardiography, Holter monitoring, ambulatory blood pressure monitoring (ABPM)
  • Follow-up and programming of cardiac devices (pacemakers, ICDs, CRT)
  • Access to a structured database facilitating patient recruitment

Since 2020, Cardiologist and Echocardiographer, Clinical Professor at Université Laval

  • Coverage of intensive care, emergency services, and inpatient hospitalization
  • Management of patients in the coronary care unit
  • Performance and supervision of transthoracic and transesophageal echocardiography

Clinical Areas of Interest

  • Cardiometabolism: dyslipidemia, lipoprotein(a), obesity, diabetes 
  • Heart Failure: immunomodulation, mineralocorticoid receptor modulators
  • Integration of Artificial Intelligence in Clinical Cardiology


Certifications

  • FRCPC — Adult Cardiology (2020)
  • FRCPC — Internal Medicine (2018)
  • ABIM — Cardiovascular Diseases (2020)
  • ABIM — Internal Medicine (2018)
  • CMQ — License to Practice Medicine (2018)
  • USMLE — Steps 1, 2, 3 (2013–2017)
  • MCCQE — Parts I and II (2014–2016)

Clinical Research Training

  • Research Ethics Involving Human Subjects — TCPS 2: FER-2022 (2025)
  • Good Clinical Practice (ICH E6 R2) — CITI / CISSS de Lanaudière (2024)
  • Food and Drug Regulations, Title 5, Part C — Health Canada (2024)
  • Ethical Principles — Declaration of Helsinki (2023)
  • Research Ethics — MSSS (Québec Ministry of Health and Social Services) (2023)

Medico-Legal Activity

Dialogue Health Technologies (in partnership with Sun Life) | Since June 2025

  • Cardiologist for the national second medical opinion program
  • Review of complex medical cases and formulation of specialized medical opinions
  • McGill University, Montréal

Administrative Involvement

CISSS de Lanaudière — Council of Physicians, Dentists and Pharmacists (CMDP)

  • Member of the Executive Committee (2002–2025)
    • Medical Advisor — 2002–2023
    • Secretary General — 2023–2024
    • Vice-President — 2024–2025
  • Involvement in medical governance, policy review, coordination with senior management, and clinical quality improvement


Physician Coordinator for Hospitalized Patients — CISSS de Lanaudière (since 2022)

  • Responsible for care efficiency for hospitalized patients, including optimization of admission and discharge processes, streamlining clinical pathways, and interdisciplinary collaboration

Teaching

Clinical Professor, Université Laval 

  • Supervision of cardiology and family medicine residents
  • Clinical supervision of medical students during clinical rotations
  • Bedside teaching: development of technical skills and diagnostic reasoning


Scientific Presentations

  • Obesity and Coronary Artery Disease: Which Comes First? — Industry-sponsored lecture by Novo Nordisk (2023)
  • Ventricular Tachycardia — Training session for emergency physicians, CISSS de Lanaudière (2022)
  • Prolonged QT Interval — Scientific meeting of the Department of Specialty Medicine, CISSS de Lanaudière (2022)
  • Cardiac Telemetry — Training for nursing staff, CISSS de Lanaudière — Industry-sponsored lecture by Sanofi (2022)


View the full CV

Martine Roy

Medical Electrophysiology Technologist


Martine Roy is a highly experienced medical technologist specializing in cardiac diagnostics. She graduated from Collège Ahuntsic in 2005 and has since worked extensively in hospital cardiology departments, performing a wide range of non-invasive tests, including: 
• Electrocardiograms (ECGs) 
• Treadmill stress tests 
• Holter and event monitoring 
• Cardiac ultrasounds (echocardiograms) 
• Pacemaker follow-up and programming 

With nearly 20 years of experience at CHDL, Martine brings deep expertise in cardiovascular diagnostics and a strong commitment to patient care. She joined Dr. Rayes to help create a more personalized and accessible clinic environment, where patients benefit from both her technical skills and her compassionate approach.