Our Specialists

Dr. Jonathan Bishinsky, MD, FRCPC
  • McGill University medical school graduate.
  • Active staff in the division of cardiology at MacKenzie Health in Richmond Hill. Focus on clinical cardiology, noninvasive cardiac testing, and research.
  • Courtesy staff at Sunnybrook Health Sciences Centre.
  • Member of the Research Ethics Board at Southlake Regional Health Sciences Centre where he is a reviewer of ongoing cardiology studies.
  • Fellow of the Royal College and diplomat of the American Board of Internal Medicine. Member in good standing with the College of Physicians and Surgeons of Ontario, Canadian Cardiovascular Society, OMA & CMA.
  • Completed cardiology review courses with the Cleveland Clinic and Harvard as well as a recent preceptorship in echocardiography at the University of Alabama in Birmingham.
  • Practices at AV Diagnostics facilities in Aurora and Toronto since 2006
Dr. John Peterson, MD, FRCPC
  • McMaster University medical school graduate. McMaster University Internal Medicine Residency graduate. University of Western Ontario Cardiology Fellowship graduate.
  • Courtesy staff at Sunnybrook Health Sciences Centre. Focus on clinical cardiology and non-invasive cardiac testing.
  • Member in good standing with the College of Physicians and Surgeons of Ontario, Royal College of Physicians and Surgeons of Canada and Ontario Medical Association
  • Practices at AV Diagnostics Toronto since May 2007
Dr. Oleh Ryzhak, MD, FRCPC
  • International Medical Graduate. Postgraduate medical training with specialization in Internal Medicine and Adult Cardiology at University of Toronto.
  • Fellow of the Royal College of Physicians and Surgeons of Canada.
  • Nuclear Cardiology Certification by US Certification Board of Nuclear Cardiology.
  • Adult Echocardiography Certification by US National Board of Echocardiography.
  • Courtesy staff in the division of cardiology at MacKenzie Health in Richmond Hill. Focus on clinical cardiology, non-invasive cardiac testing.
  • Practices at AV Diagnostics facilities in Aurora, Toronto and Keswick since May 2013
  • Fluent in English, Ukrainian and Russian
 Dr. Alexander Crystal, MD, FRCPC
  • Completed his Internal Medicine residency at Yale New Haven Health
  • Cardiology fellowship at the University of Toronto
  • Member of the resuscitation council of the American Heart Association
  • Diplomat of the American Board of Internal Medicine
  • Fellow of the Royal College of Physicians and Surgeons of Canada
  • Level II trained in Nuclear Cardiology, Echo and Stress Echo
  • Holding additional certification by the US Board of Echocardiography
  • Practices at AV Diagnostics Toronto since July 2018
  • Fluent in English, Hebrew and Russian
  
Part Time associates, referring patients for testing, interpreting test results and participating in latest researches.

Dr. James Dubbin - Cardiologiist at Sunnybrook Hospital
Dr. Zev Shainhouse - Internal Medicine & Heart Diseases
Dr. Eugene Crystal - Electrophysiology, Sunnybrook Hospital
Dr. Sheldon Singh - Electrophysiology, Sunnybrook Hospital
Dr. Ilan Lashevsky - Electrophysiology, Sunnybrook Hospital
Dr. Shyam Radakrishnan - Cardiologiist at Sunnybrook Hospital
Dr. Irving Tiong - Cardiologiist at Sunnybrook Hospital