Radiologists

Our friendly and professional staff ensure that every patient/visitor and physician receives efficient and pleasant service, whilst maintaining patient confidentiality and privacy at all times.

Our highly trained Radiologists hold hospital appointments at The North York General Hospital, Leslie and Branson sites in Toronto, Ontario and Norfolk General Hospital in Simcoe, Ontario. Where necessary we offer follow up and bookings in a timely manner.

  • Adam Tunis


    Specializations: Abdominal and Musculosketal Imaging including Image guided MSK interventions
    Medical School: Queen's University, Kingston, ON, Canada
    Fellowship: University of Toronto and St Michael's Hospital, Toronto, ON

    Dr. Tunis completed his MD at Queen’s University, Kingston, ON and did his radiology residency at the University of Ottawa, ON. He did his Fellowship training in cross sectional abdominal imaging at the University of Toronto and St Michael’s hospital, with particular attention to both clinical and research applications of prostate MRI.

    Dr. Tunis has been with York Radiology Consultants since 2015 and is Clinical Director of Medical Imaging Informatics, North York General Hospital, Toronto, ON.

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  • Bonnie O’Hayon


    Specializations: CT, General, Mammography, MRI, US
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Womens Imaging, St Michael’s Hospital, University of Toronto, ON

    Dr. Bonnie O’Hayon received her M.D. and completed her residency in Diagnostic Radiology from the University of Toronto, ON. She has Fellowship training in Body Imaging from St. Michael’s Hospital, University of Toronto, ON  and her areas of interest are Women’s Imaging and MRI.

    Dr. O’Hayon has been with York Radiology Consultants since 2012 and is Clinical Director of Ultrasound and Division Head of MFM Imaging at North York General Hospital, Toronto, ON.

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  • Brian Ginzburg


    Specializations: CT, MRI, Ultrasound
    Medical School: University of Witwatersrand, South Africa

    Dr Brian Ginzburg received his M.D. from University Of Witwatersrand, South Africa and completed his Residency at The University of Toronto, ON. His areas of interest are Ultrasound and MRI.

    Dr. Ginzburg has been with York Radiology Consultants since 2002.

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  • Christine MacAdam


    Specializations: CT, MRI, Ultrasound, Women's Imaging
    Medical School: University of Western Ontario, London, ON, Canada
    Fellowship: Ultrasound, Mt. Sinai Hospital, The University of Toronto, ON

    Dr Christine Macadam received her M.D. from University of Western Ontario and completed her Residency at Mt. Sinai Hospital, University of Toronto, ON. She has Fellowship training in Ultrasound from Mt. Sinai Hospital, The University of Toronto, ON. Her areas of interest are in Ultrasound, Womens Imaging and MRI.

    Dr. Macadam has been with York Radiology Consultants since 1985.

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  • David Pham


    Specializations: CT, MRI, US
    Medical School: University of Saigon, Vietnam

    Dr David Hui Pham received his M.D. from University Of Saigon, Vietnam and completed his Residency at Queens University, Kingston, ON. His areas of interest are in Ultrasound and MRI.

    Dr. Pham has been with York Radiology Consultants since 2002.

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  • Elizabeth Lamere


    Specializations: CT, Ultrasound, Women's Imaging
    Medical School: McMaster University, Hamilton, ON, Canada

    Dr. Elizabeth Lamere received her M.D. from McMaster University and completed her residency at University of Toronto, ON. Her interest is in Breast and Women’s Imaging.

    She joined York Radiology Consultants in 2002 and is the immediate past Chief Radiologist/Medical Director of the North York General Hospital, Toronto, ON.

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  • Enoch Lai


    Specializations: 3D Imaging, CT, MRI, Ultrasound
    Medical School: University of Alberta, Edmonton, AB, Canada
    Fellowship: Abdominal Imaging, University of Toronto

    Dr. Enoch Lai received his M.D. from the University of Alberta and completed his residency in Diagnostic Radiology at the University Of Saskatchewan. He has Fellowship training in Abdominal Imaging from University of Toronto. His areas of interest are Abdominal MRI and CT and 3D Imaging. He is the Clinical Director for CT Imaging and Deputy Chief at North York General Hospital, Toronto, ON.

    Dr. Lai has been with York Radiology Consultants since 2002.

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  • Gilbert Chow


    Specializations: CT, MRI, Sports Medicine
    Medical School: Queen's University, Kingston, ON, Canada
    Fellowship: MRI Imaging, University or Toronto

    Dr. Gilbert Chow received his M.D. from Queens University, Kingston and completed his residency in Diagnostic Radiology at the University of Toronto, ON.

    He has Fellowship training in MRI Imaging from the University of Toronto. His areas of interest are in Sports Medicine, CT and MRI and has been with York Radiology Consultants since 2002.

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  • Hassan Deif


    Specializations: Interventional, MRI
    Medical School: University of Alexandria, Egypt

    Dr. Hassan Deif received his M.D. from University of Alexandria, Egypt and completed his residency in Diagnostic Radiology at the University of Toronto, ON. His areas of interest are Interventional Radiology, Body Imaging, Nuclear Medicine and MRI

    Dr. Deif has been with York Radiology Consultants since 1983.

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  • Irving Jacobs


    Specializations: CT, Interventional, MRI, Ultrasound
    Medical School: University of Toronto, Toronto, ON, Canada

    Dr. Irving Jacobs received his M.D. and completed his residency in Diagnostic Radiology at the University of Toronto, ON. His areas of interest in are Interventional Radiology and MRI. He is the Clinical Director for Radiography and Radiation Safety Officer at North York General Hospital, Toronto, ON.

    Dr. Jacobs has been with York Radiology Consultants since 2002.

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  • Joseph Peltz


    Specializations: CT, MRI, Ultrasound, Women's Imaging
    Medical School: Queen's University, Kingston, ON, Canada
    Fellowship: Abdominal Imaging, Sunnybrook Health Sciences Centre, University of Toronto

    Dr. Joseph Peltz received his M.D. from Queen’s University and completed his residency in Diagnostic Radiology at McGill University in Montreal, QC. He has fellowship training in Abdominal Imaging from Sunnybrook Health Sciences Centre at University of Toronto. His areas of interest include Abdominal MRI, CT and prostate imaging.

    Dr. Peltz has been with York Radiology Consultants since 2017 and is the Division Head of Abdominal Imaging at North York General Hospital, Toronto, ON.

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  • Kelly Cranstoun


    Specializations: CT, Nuclear Medicine, Ultrasound
    Medical School: University of Western Ontario, London, ON, Canada
    Fellowship: Nuclear Medicine, University of Toronto

    Dr. Kelly Cranstoun received her M.D. at the University of Western Ontario. She completed her residency in Diagnostic Radiology and has Fellowship training in Nuclear Medicine from the University of Toronto and has a dual specialty in Diagnostic Radiology and Nuclear Medicine.

    Dr. Cranstoun has been with York Radiology Consultants since 1997. She is the Clinical Director of Nuclear Medicine and oversees the Quality Assurance function in the Nuclear Medicine departments at the North York General Hospital, Toronto, ON and at York Radiology Consultants.

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  • Kelvin Mak


    Specializations: CT, MRI, Ultrasound
    Medical School: Queen's University, Kingston, ON, Canada
    Fellowship: Body Imaging, Univeristy of Toronto

    Dr. Kelvin Mak received his M.D. and completed his residency in Diagnostic Radiology at Queens University, Kingston, ON. He has Fellowship training in Body Imaging, MRI, CT and Ultrasound at the University of Toronto. His areas of interest are CT, MRI and Ultrasound.

    Dr. Mak has been with York Radiology Consultants since 2000 and is Physician Lead, LDCT Lung Cancer Screening at North York General Hospital, Toronto, ON.

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  • Lawrence Friedman


    Specializations: CT, MRI, Sports Medicine, Ultrasound
    Medical School: University of Witwatersrand, South Africa

    Dr. Lawrence Friedman received his M.D. from University of Witwatersrand, South Africa and completed his residency at University of Saskatoon. He is well known for his interest and development in the field of Musculoskeletal Imaging and is Department Research Director at North York General Hospital, Toronto, ON.

    Dr. Friedman joined York Radiology Consultants in 2007. Prior to that he was with Hamilton Health Sciences and was the chief of Diagnostic Imaging at the Guelph General Hospital.

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  • Leonard Grinblat


    Specializations: CT, MRI, Nuclear Medicine, Ultrasound
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Nuclear Medicine, University of Toronto

    Dr. Leonard Grinblat received his M.D. from McMaster University and completed his residency in Diagnostic Radiology at the University of Toronto, ON. He has Fellowship training in Nuclear Medicine from the University of Toronto and has a dual specialty in Diagnostic Radiology and Nuclear Medicine.

    Dr. Grinblat has been with York Radiology Consultants since 2009 and is the Division Head of Pediatric Imaging at North York General Hospital, Toronto, ON.

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  • Margaret Chang


    Specializations: CT, MRI, Neuroradiology, Ultrasound
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Neuroradiology, University of Pennsylvania

    Dr. Margaret Chang received her M.D. from the University of Toronto and completed her residency in Diagnostic Radiology at McGill University, Montreal, QC. She has Fellowship training in Neuroradiology from the University of Pennsylvania and her areas of interest are CT, MRI and Ultrasound.

    Dr. Chang has been with York Radiology Consultants since 2002 and is the Division Head of Neuroradiology and MRI Safety Officer at North York General Hospital, Toronto, ON.

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  • Neil Isaac


    Specializations: Cardiac MRI, CT, Ultrasound, Women's Imaging
    Medical School: Dalhousie University, Halifax, ON, Canada
    Fellowship: Cardiovascular Imaging, University of Pennsylvania

    Dr. Neil Isaac received his M.D. and completed his residency in Diagnostic Radiology at the Dalhousie University, Halifax, NS. He has Fellowship training in Cardiovascular Imaging from the University of Pennsylvania. His areas of interest are pediatric and adult cardiovascular imaging, MRI and Women’s imaging.

    Dr. Isaac has been with York Radiology Consultants since 2009 and is the President and CEO of York Radiology Consultants and oversees the Quality Assurance at York Radiology. He is the Division Head of Cardiac Imaging at North York General Hospital, Toronto, ON.

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  • Petrina Causer


    Specializations: CT, MRI, Ultrasound, Women's Imaging
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Body Imaging, Sunnybrook and Womens’ College, University of Toronto, ON

    Dr. Petrina Causer received her M.D. and completed her residency in Diagnostic Radiology from the University of Toronto, ON. She has Fellowship training in Body Imaging from the Sunnybrook and Womens’ College, University of Toronto, ON  and her areas of interest are Women’s Imaging and MRI.

    Dr. Causer has been with York Radiology Consultants since 2011 and is the Clinical Director of Mammography and Division Head of Breast Imaging at the North York General Hospital, Toronto, ON and at York Radiology Consultants.

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  • Richard Stoneman


    Specializations: CT, Interventional, MRI, Ultrasound
    Medical School: University of Western Ontario, London, ON, Canada
    Fellowship: Vascular & Interventional Radiology, University of Toronto

    Dr. Richard Stoneman received his M.D. from the University of Western Ontario and completed his residency in Diagnostic Radiology at University of Toronto, ON.  He has Fellowship training in Vascular and Interventional Radiology from the Toronto General Hospital and his areas of interest are Interventional Radiology, CT, MRI and Ultrasound.

    Dr. Stoneman has been with York Radiology Consultants since 1985 and is the immediate past President and CEO of York Radiology Consultants.

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  • Ronn Goldberg


    Specializations: CT, Ultrasound
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Vascular & Interventional Radiology, University of Toronto

    Dr. Ronn Goldberg received his M.D. from the University of Toronto and completed his residency in Diagnostic Radiology from the University Hospitals, Case Western Reserve University, Cleveland, Ohio. He has Fellowship in Vascular and Interventional Radiology from the University of Toronto and his areas of interest are CT, Ultrasound, Cancer Imaging  and Echocardiography. Dr Goldberg holds the position of Adjunct Assistant Professor of Medical Imaging, Faculty of Medicine, University of Toronto.

    Dr Goldberg has an MBA from the Rotman’s School of Business, University of Toronto and was previously chief at North York General Hospital, Toronto, ON.

    Dr. Goldberg has been with York Radiology Consultants since 2001.

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  • Ryan Margau


    Specializations: CT, Interventional, MRI, Ultrasound, Women's Imaging
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Vascular & Interventional Radiology, University of Toronto

    Dr. Ryan Margau received his M.D. and completed his residency in Diagnostic Radiology from the University of Toronto, ON.  He has Fellowship training in Vascular and Interventional Radiology from the University Health Network and the Mt. Sinai Hospitals in Toronto. His areas of interest are CT, Interventional Radiology and Womens’ Imaging.

    He is the Chief Radiologist/Medical Director and Clinical Director of Interventional Radiology at the North York General Hospital, Toronto, ON.

    Dr. Margau has been with York Radiology Consultants since 2007.

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  • Susan Armstrong


    Specializations: CT, MRI, Ultrasound, Women's Imaging
    Medical School: University of Toronto, Toronto, ON, Canada
    Fellowship: Women's Imaging, University of Toronto

    Dr. Susan Armstrong received her M.D. and completed her residency in Diagnostic Radiology from the University of Toronto, ON. She has fellowship training in Women’s Imaging from the University Health Network, Toronto, ON and her areas of interest are Women’s imaging and MRI.

    Dr. Armstrong has been with York Radiology Consultants since 2006.

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  • Yatin Chadha


    Specializations: Pain Therapy including Image guided MSK Interventions, Sports Medicine
    Medical School: University of British Columbia, Vancouver, BC, Canada
    Fellowship: Musculoskeletal Imaging, University of California, San Diego

    Dr.Yatin Chadha received his M.D from the University of British Columbia and completed his radiology residency at Queen’s University, Kingston, ON. He has a fellowship in Musculoskeletal Imaging from the University of California in San Diego.

    Dr. Chadha joined York Radiology Consultants in 2017 and is the Clinical Director of MRI and Division Head of MSK Imaging at North York General Hospital, Toronto, ON.

    His primary interests are in Sports Medicine and Pain Therapy.

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