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Lonny J Rosen

Lonny J Rosen

Rosen Sunshine LLP212 Adelaide WestSuite 200TorontoOntarioCanadaM5H 1W7

Global Leader

Healthcare 2020

Professional Biography

WWL Ranking: Recommended

WWL says

Lonny Rosen is an established practitioner in the market, praised by peers who say he is “very focused on professional discipline and civil litigation matters”. 


Lonny Rosen is a founding partner of the Toronto, Ontario health law boutique Rosen Sunshine LLP. He has been certified by the Law Society of Ontario as a specialist in health law.

Lonny advises on a wide variety of health and regulatory law issues. His clients include health care professionals, administrators of health care facilities, professional associations and individuals. He represents clients in a wide range of civil and administrative proceedings, and regularly represents health professionals in complaint and discipline matters, investigations, audits and peer reviews, hospital privileges disputes and in hearings before various health tribunals. He also serves as independent legal counsel to discipline committees of professionals’ governing bodies.

Lonny is a senior lawyer member of the Consent and Capacity Board, and a member of the editorial board of the Risk Management in Canadian Health Care newsletter. He has served as chair of the health law sections of both the Ontario and Canadian Bar Associations and was a director of the Advocates’ Society and of the governing council of the Medico-Legal Society of Toronto. He frequently writes and speaks on health law issues and is an adjunct professor of Osgoode Hall Law School, teaching Health Law.  

Lonny was named to Best Lawyers in Canada for health care law every year since 2014.

In June 2016, Lonny was named the inaugural recipient of the OBA Susan Hilary Davidson Memorial Award for Excellence in Health Law.

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