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Admitted to the Law Society of Upper Canada in 1988
*David Tenszen Law Professional Corporation
David represents accident victims and disabled persons in personal injury, medical malpractice and disability insurance litigation.
David has appeared on behalf of clients at all levels of court, including the Ontario Court of Appeal, the Federal Court of Appeal and the Supreme Court of Canada where he was successful on behalf of Appellants/Plaintiffs on two different occasions (Sarvanis v. Canada  1 S.C.R. 921 and Isen v. Simms  2 S.C.R. 349).
David has lectured at educational programs organized by the Law Society of Upper Canada, the Canadian Institute, the Brain Injury Associations of Niagara, Sault Ste. Marie, Sudbury, Peterborough, Belleville and Ottawa, Mothers Against Drunk Drivers and other medical, rehabilitation and insurance industry groups.
David has the honour of having been selected by his peers for inclusion in The Best Lawyers in Canada® 2013 in the field of personal injury litigation (Copyright 2009 by Woodward/White, Inc., of Aiken, S.C.). David has also had the honour of having been selected by his peers to be published in the Canadian Legal Lexpert® Directory 2012 as a leading practitioner in the field of Personal Injury Litigation. David has also been recognized by the Brain Injury Association of Niagara for his outstanding support for the Association and for those they serve.
- Bachelor of Arts, Trinity College at the University of Toronto (1981)
- Bachelor of Laws, Osgoode Hall Law School (1986)
- Personal Injury
- Disability Insurance Litigation
Professional Activities and Affiliations
- The Advocates’ Society
- The Ontario Trial Lawyers Association
- The Metropolitan Toronto Lawyers’ Association
- The Medico-Legal Society of Toronto
- Past Director of the Brain Injury Association of Toronto
David R. Tenszen, "Litigating out-of-Ontario accident claims", The Lawyers Weekly, May 3, 2013
David R. Tenszen, "Litigating out-of-province accident", Advocate Daily, April 30, 2013
David R. Tenszen, “Education and Income Benefits for Children”, Accident Benefit Reporter*, Vol. 6, No. 3, Fall 2005
David R. Tenszen, “Home Modifications”, Accident Benefit Reporter*, Vol. 6, No. 2, Spring 2005
David R. Tenszen, “What’s wrong with Bill 59?”, Accident Benefit Reporter*, Vol. 2, No. 3, October 1999
David R. Tenszen, ”Catastrophic Impairment”, Accident Benefit Reporter*, Vol. 1, No. 1, July 1998
* A Thomson, Rogers’ Publication
David R. Tenszen, Wendy Moore Mandel, and Sloan H. Mandel, How the Treatment, Care and Reports You Provide to Your Patients is Presented and Challenged When the Case Goes to a Trial, presented at St. John's Rehab Hosptial on March 7, 2012.
David R. Tenszen, Basic Anatomy of Personal Injury Actions, presented at the "Piecing the Puzzle Together: Catastrophic Claims, Tort Claims and the New SABS" conference with Thomson, Rogers on May 25, 2011 in Belleville.
David R. Tenszen & David A. Payne, Impaired Driving Civil Cases, presented at the 2011 MADD Canada's Victims' Weekend and Candlelight Vigil of Hope & Remembrance on April 30, 2011.
David R. Tenszen, Preparing for and Conducting Effective Examinations for Discovery, presented at the "New Lawyer Practice Series: Civil Litigation 2011" seminar at the Law Society of Upper Canada on April 13, 2011.
David R. Tenszen and Karen Rucas, Tips on Completing the New Accident Benefit Forms, presented at the "Back-to-School II with Thomson, Rogers" conference on September 30, 2010.
David R. Tenszen and David A. Payne, The Rights of a Disabled / Brain Injured Person Returning to Work, presented at the Provincial Acquired Brain Injury Conference "Harnessing the Power After Brain Injury" on October 29, 2009
David R. Tenszen and David A. Payne, The Proposed Accident Benefit Changes, presented at the Back to School Conference with Thomson, Rogers and the Toronto ABI Network on September 10, 2009
David R. Tenszen and Adrienne M. Kirsh, Coordinating Benefits and the Pursuit of Subrogation Rights: Now you see them; now you don’t – Having your cake and eating it too, 7th Annual Litigation Disability Insurance Claims: Key Updates, Strategic Advice and Practical Techniques to Reduce Legal Risk, presented at The Canadian Institute on November 3, 2005
David R. Tenszen, The Reduction of Total Disability Benefits by the Integration or Offset of Other Disability Benefits (Or….Thanks for your $16.45 Monthly Premium, Now Here is your $9.38 Monthly Benefit), presented at The Canadian Institute on November 4, 2003
David R. Tenszen, Contending with Appropriate Care Provisions in Individual Disability Insurance Policies, 2nd Annual Litigating Disability Insurance Claims, presented at The Canadian Institute on November 4, 2002
David R. Tenszen, Strategies for Resolving The Claim Before It Becomes a Case, 3rd Annual Litigation Disability Insurance Claims, presented at The Canadian Institute on November 5, 2001
In recognition and appreciation of your outstanding support for our Association and for those we serve, and in acknowledgment of your tremendous sense of community spirit!
- Brain Injury Association of Niagara
Just a note to say thank-you for everything that you did for me. We always felt that you had my best interest at heart. We are very happy with the settlement that you got for us.
- W. & J. K.
I want you to know how much I appreciate the hard work and wisdom you have put into the kids’ and my case.
David, do know that I am thankful and happy, that – through your work and diligence – things have worked out so well. Thank you!
- A. W.
I'm very grateful to you and your staff and want to thank you all for your kindness and the support you have given me over the years. If asked, I would certainly recommend your services to anyone in need of legal assistance.
- D. M. S.
Words can not express how grateful I am to have had you by my side through such a difficult time of my life. I truly appreciate your guidance, support and professionalism throughout the process.
And mostly, I can't thank you enough for believing and understanding me when I felt that not many people did!!
Just a small token of my immense appreciation for making an unpleasant ordeal bearable.
Your professionalism and your gentlemanly manner throughout gave me great comfort.
I would recommend you, without reservation, to anyone I might come across in need of your services.
- M. A. G.
A few words to say again a million thanks for the settlement that you were able to obtain after hard negotiations with the defence parties.
- J-P. T.
I just want to thank you for all you have done, and for your ease with corresponding over the last few years handling my case over the distance.
It is a great comfort to have these matters settled.
I will not hesitate to contact you should I need any help in the future.
- W. H.
Dear Mr. Tenszen,
We just wanted to say thanks to you and your staff for doing such a great job on obtaining a generous and timely settlement. We managed to pay off some bills and invest in our future thanks to your efforts. We will recommend you to anyone needing your services without hesitation.
I think we were a little surprised at the settlement...we were grinning from ear-to-ear when we got outside.
- R.L. and S.L.
Mr. David Tenszen,
We thank you, very much, for the great job you have done for us.
- S. Family
Mere words cannot convey the thanks for all the work you have done on my behalf during this long, hard year and a half. But I do offer my heartfelt thanks for all your help in obtaining this settlement for me.
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