Waterloo Rheumatology is dedicated to excellence in patient-centred evidence-based care.
We combine clinical expertise, compassion, and respect to help patients live well with autoimmune and inflammatory disease, while contributing to the health of our community.
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Dr. Yeung grew up in Sudbury, Ontario and attended Laurentian University where he received a Bachelors of Science (Hon) in Biology. He earned a Medical Doctorate (MD) from the Schulich School of Medicine at Western University in London, Ontario. He then completed post-graduate residency training in Internal Medicine and a clinical fellowship in Rheumatology at Western University. During his fellowship, Dr. Yeung fulfilled leadership and educational roles as the Chief Rheumatology Fellow.
Dr. Yeung founded Waterloo Rheumatology in 2018 and expanded its operations in 2020 with space for multiple rheumatologists in group practice. He is active as an Assistant Clinical Professor with McMaster University, providing lectures and clinical preceptorships to Internal Medicine Resident Physicians and Rheumatology Clinical Fellows. Dr. Yeung was accepted into the 2020 cohort of the Canadian Rheumatology Association Leadership Program. Dr. Yeung was awarded the 2022 Early Career Rheumatologist Award by the Ontario Rheumatology Association. He is the current President of the Ontario Rheumatology Association.
Dr. Yeung's professional interests include immune system disorders with systemic manifestations -- especially those involving the joint. This includes inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, also gout), systemic rheumatic diseases (including lupus, myositis, scleroderma), vasculitis, and interstitial lung disease.
EDUCATION
LAURENTIAN UNIVERSITY
• Bachelor of Science (Hon) Biology 2005-2009SCHULICH SCHOOL OF MEDICINE,
WESTERN UNIVERSITY
• Medical Doctorate, 2009-2013
• Internal Medicine Residency, 2013-2016
• Rheumatology Fellowship, 2016-2018ROTMAN SCHOOL OF MANAGEMENT,
UNIVERSITY OF TORONTO
• OMA Physician Leadership Program, 2026ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2017
• Rheumatology, 2018FACULTY APPOINTMENTS
Assistant Clinical Professor (Adjunct),
McMaster University, Department of Medicine,
Division of Rheumatology💬 Referral eFax: (519) 749-9054
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Dr. Sabrina Lue joined Waterloo Rheumatology in April 2020. She completed her Bachelor of Medical Sciences and Medical Doctorate at Western University in London, Ontario. Dr. Lue then pursued post-graduate residency training in Internal Medicine and a Clinical Fellowship in Rheumatology at Queen’s University.
Dr. Lue specializes in the diagnosis and treatment of autoimmune and rheumatic diseases, including inflammatory arthritis (such as Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis), systemic rheumatic diseases (such as systemic lupus, inflammatory myositis, and scleroderma), and vasculitis.
EDUCATION
WESTERN UNIVERSITY
• Bachelor of Medical Sciences, 2006-2010SCHULICH SCHOOL OF MEDICINE, WESTERN UNIVERSITY
• Medical Doctorate, 2010-2014QUEEN’S UNIVERSITY
• Internal Medicine Residency, 2014-2017
• Rheumatology Fellowship, 2017-2019ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2017
• Rheumatology, 2018FACULTY APPOINTMENTS
Assistant Clinical Professor (Adjunct),
McMaster University, Department of Medicine,
Division of Rheumatology💬 Referral eFax: (519) 895-1623
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Dr. Sandeep Dhillon joined Waterloo Rheumatology July 2021. He completed his Honours Bachelor of Science and Master of Science at the University of Toronto. Thereafter, he trained at McMaster University in Hamilton, Ontario where he earned his Medical Doctorate. Dr. Dhillon remained at McMaster University to pursue post-graduate residency training in Internal Medicine and a Clinical Fellowship in Rheumatology. As a resident physician, Dr. Dhillon was awarded the Hui Lee Senior Medical Resident and the Chief Medical Resident Awards.
Dr. Dhillon’s clinical interests are the diagnosis and management of inflammatory arthropathies (such as rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and gout), systemic rheumatic diseases (such as systemic lupus erythematosus, inflammatory myositis, and scleroderma), and vasculitis.
EDUCATION
UNIVERSITY OF TORONTO
• Honours Bachelor of Science, 2007-2011
• Master of Science, 2011-2013DEGROOTE SCHOOL OF MEDICINE,
MCMASTER UNIVERSITY
• Medical Doctorate, 2013-2016
• Internal Medicine Residency, 2016-2019
• Rheumatology Fellowship, 2019-2021CANADIAN RHEUMATOLOGY ULTRASOUND SOCIETY
• Basic Course, 2021
• Advanced Injection Course, 2023ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2020
• Rheumatology, 2021FACULTY APPOINTMENTS
Assistant Clinical Professor (Adjunct),
McMaster University, Department of Medicine,
Division of Rheumatology💬 Referral eFax: (519) 578-4422
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Dr. Gabriel Jeyasingham joined Waterloo Rheumatology in July 2022. He completed his Bachelor of Health Sciences (BHSc) at McMaster University in Hamilton, Ontario. He then transitioned to McMaster University’s Waterloo Regional Campus where he completed his Medical Doctorate (MD) and post-graduate residency training in Internal Medicine. Dr. Jeyasingham has since completed subspecialty training in Rheumatology at Western University in London, Ontario.
Dr. Jeyasingham is active with the Ontario Rheumatology Association as Co-Chair of the Emerging Rheumatologists of Ontario Committee. He is the Program Director for the Internal Medicine training program at McMaster University, Waterloo Campus.
Dr. Jeyasingham’s clinical interests lie in the diagnosis and treatment of autoimmune and rheumatic diseases, including inflammatory arthritis (such as Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis), systemic rheumatic diseases (such as systemic lupus, inflammatory myositis, and scleroderma), and vasculitis.
EDUCATION
MCMASTER UNIVERSITY
Bachelor of Health Sciences (Honours), 2010-2014DEGROOTE SCHOOL OF MEDICINE,
MCMASTER UNIVERSITY
• Medical Doctorate, 2014-2017
• Internal Medicine Residency, 2017-2020SCHULICH SCHOOL OF MEDICINE,
WESTERN UNIVERSITY
• Rheumatology Fellowship, 2020-2022ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2021
• Rheumatology, 2022FACULTY APPOINTMENTS
Assistant Clinical Professor (Adjunct),
McMaster University, Department of Medicine,
Division of RheumatologyProgram Director
Internal Medicine Training Program,
McMaster University (Waterloo Campus)💬 Referral eFax: (519) 884-1107
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Dr. Michael Vernon joined Waterloo Rheumatology in July 2024. Dr. Vernon grew up in Waterloo, Ontario, and completed his Bachelor of Science at Western University before earning his Medical Doctorate (M.D.) from the American University of the Caribbean in 2017. He then completed his Internal Medicine Residency at Roger Williams Medical Center in Rhode Island, where he received the "Intern of the Year" award in 2019 and the "Resident of the Year" award in 2021. Dr. Vernon went on to complete his Rheumatology Fellowship at Queen's University in Kingston, Ontario, where he served as Chief Rheumatology Resident in 2022-2023.
Dr. Vernon's clinical focus is on the diagnosis and treatment of systemic rheumatic diseases, including autoimmune inflammatory arthritis (such as Rheumatoid Arthritis, Psoriatic Arthritis, Axial Spondyloarthropathies), systemic rheumatic diseases (such as systemic lupus, inflammatory myositis, and scleroderma), and vasculitis.
EDUCATION
WESTERN UNIVERSITY
• Bachelor of Science, 2009-2013AMERICAN UNIVERSITY OF THE CARIBBEAN
• Medical Doctorate, 2013-2017ROGER WILLIAMS MEDICAL CENTER
BOSTON UNIVERSITY SCHOOL OF MEDICINE
• Internal Medicine Residency, 2018-2021QUEEN’S UNIVERSITY
• Rheumatology Fellowship, 2021-2023ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2022
• Rheumatology, 2023💬 Referral eFax: (519) 208-1052
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Dr. Christina Ma joined Waterloo Rheumatology in September 2025. She grew up in the Kitchener-Waterloo area and is excited to return home and care for the community. She completed her Bachelor of Health Sciences (BHSc) at McMaster University in Hamilton, Ontario. She then completed her Medical Doctorate (MD), post-graduate residency training in Internal Medicine and subspecialty fellowship training in Rheumatology all at McMaster University in Hamilton, Ontario. During this time Dr. Ma fulfilled leadership roles as Chief Resident in her final years of Internal Medicine and Rheumatology training. As a resident physician, Dr. Ma was awarded the Outstanding Resident Award and the Chief Medical Resident Award.
Dr. Ma's clinical interests lie in the diagnosis and treatment of autoimmune and rheumatic diseases, including inflammatory arthritis (such as Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis), systemic rheumatic diseases (such as systemic lupus, inflammatory myositis, and scleroderma), and vasculitis. She also has an interest in musculoskeletal ultrasound and completed the Canadian Rheumatology Ultrasound Society's Basic course in 2025.
EDUCATION
MCMASTER UNIVERSITY
Bachelor of Health Sciences (Honours), 2014-2017
DEGROOTE SCHOOL OF MEDICINE,
MCMASTER UNIVERSITY
• Medical Doctorate, 2017-2020
• Internal Medicine Residency, 2020-2023
• Rheumatology Fellowship, 2023-2025CANADIAN RHEUMATOLOGY ULTRASOUND SOCIETY
• Basic course, 2025ROYAL COLLEGE CERTIFICATIONS
• Internal Medicine, 2023
• Rheumatology, 2025💬Referral eFax: (519) 208-1052