Sloan H. Mandel*, Partner

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Phone: 416.868.3123

Fax: 416.868.3134

Certified Specialist - Civil Litigation
Lexpert Ranked Lawyer - Canadian Legal Lexpert Directory 2015
Best Lawyers

Admitted to the Law Society of Upper Canada in 1996 and Certified by the Law Society of Upper Canada as a Specialist in Civil Litigation

*Sloan Mandel Law Professional Corporation

Practice Highlights

Sloan Mandel was admitted to the Law Society of Upper Canada in 1996 and is certified by the LSUC as a specialist in Civil Litigation. Sloan is a partner at the law firm Thomson, Rogers. He attended Cornell University, graduated from Osgoode Hall Law School in 1994 and was called to the Ontario Bar in 1996. His practice focuses exclusively on personal injury and medical malpractice litigation on behalf of plaintiffs. Sloan’s peers have identified Sloan as a “leading practitioner” in the area of Personal Injury Litigation and he is listed in The Best Lawyers in Canada® publication. In The Canadian Legal Lexpert® Directory, Sloan has been identified by his peers as “consistently, repeatedly & most frequently recommended” in the areas of medical negligence and personal injury.

Canadian Legal Lexpert Ranked Lawyer - Sloan Mandel

Sloan has been published extensively in both medical and legal texts and journals. He is a past member of the Ontario Bar Association Health Law Executive and regularly lectures doctors, lawyers and health care professionals at a variety of educational seminars.

Sloan has a wealth of court and litigation experience, achieving some of Ontario’s largest personal injury and medical malpractice awards. “If a trial is necessary, then so be it. I prepare for war to make the best peace”.

Sloan and his wife Wendy, (also a top-notch litigator and partner at Thomson, Rogers) parent three amazing kids. Sloan also has a world-class “slap shot”.


  • Attended Cornell University
  • Bachelor of Laws, Osgoode Hall Law School (1994)

Practice Areas

  • Personal Injury
  • Medical Malpractice

Professional Activities and Affiliations

  • Member of numerous legal societies and associations


 Publications and Presentations

  • Sloan has been published extensively in both medical and legal texts/journals
  • He has extensively lectured doctors, lawyers and insurance personnel in a variety of insurance/liability seminars 

Sloan H. Mandel, 5 Tips to Being a Great Expert Witness, presented at the Personal Injury Alliance (PIA) conference "Practical Strategies for Experts: The Shifting Landscape" on October 23, 2014.

Sloan H. Mandel, Advancing Pecuniary and Non-Pecuniary Claims under the Family Law Act, presented at the Oatley McLeish Guide to Motor Vehicle Litigation Seminar on March 26, 2014.

Sloan H. Mandel & James Vigmond, Everything you need to know about Catastrophic Impairment/New Definitions, presented at the Personal Injury Alliance "Catastrophic Impairment: A Look into the Future" conference on June 13, 2013.

Sloan H. Mandel, Client Management - Panel Discussion, presented at the Osgoode Certificate in Personal Injury Law & Practice on April 3, 2013.

Sloan H. Mandel & Leonard H. Kunka, TORT DAMAGES - The Claims That You Never Knew You Had (and Those You Don't), presented at the St. John's Rehab Lunch & Learn on February 20, 2013.

Sloan H. Mandel, Setting the Stage: Litigating Obstetric Claims, Litigation Session: Live Demonstrations - Examination for Discovery of a Defendant Physician and Cross-Examination of an Expert Witness, presented at The Osgoode Certificate in Clinical Risk, Negligence, and Claims Management in Health Care, on January 21 - 25, 2013.

Sloan H. Mandel, Litigating the Claim in Tort: Plaintiff's and Defence Perspectives, presented at the Osgoode Professional Development Program - The Intensive Short Course on Fibromyalgia and Chronic Pain Claims: The Science, the Law, the Strategies, on November 15, 2012.

Sloan H. Mandel, Conducting a Discovery and Implications for Trial - Panel Discussion & Demonstration and Commentary: Opening and Closing the Discovery, The Advocates' Society, October 30, 2012.

Sloan H. Mandel, The Pitfalls of Medical Record Charting, presented at St. John's Rehabilitation Hospital on October 10, 2012.

Sloan H. Mandel and Tina Manousos, Personal Journey to Independence  - The Tina Manousos Story, presented at the Back to School with Thomson, Rogers and Spinal Cord Injury Ontario - Managing Your Injury to Independence Conference on September 13, 2012.


Sloan H. Mandel, Wendy Moore Mandel, and David R. Tenszen, 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.

Sloan H. Mandel, Kalika Webb & Marita Webb, Catastrophic Impairment - A Patient's Perspective, presented at the Back to School with Thomson, Rogers - Catastrophic Brain Impairment: Children, Young Adults and their Families (Rehabilitation Strategies) conference on September 8, 2011.


Sloan H. Mandel and David A. Payne, How Ontario's New Automobile Legislation is Impacting Your Patients and Their Treatment, presented at Hôtel-Dieu Grace Hospital on November 4, 2010.

Sloan H. Mandel,Incurred Expenses - A New Challenge For Accident Victims, presented at the Back-to-School II with Thomson, Rogers conference on September 30, 2010.

Sloan H. Mandel, The Court's Approach to Evaluating Future Care, presented at the Canadian Defence Lawyers General Meeting - June 3 - 4, 2010

Sloan H. Mandel, Examinations, Assessments and Reports: What's Covered and Who Pays?, presented at the Navigating the New SABS: Practical Solutions Conference with Thomson, Rogers and the Toronto ABI Network on March 31, 2010

Sloan H. Mandel, Nick Gurevich, How to Organize (Adapt) Your Practice to the
Proposed Changes
, presented at the Back to School Conference with Thomson, Rogers and the Toronto ABI Network on September 10, 2009



In the Media


Lower auto insurance premiums could hurt more than they help, lawyer says
CTV News - May 12, 2015

According to the Personal Injury Alliance (PIA Law), the changes outlined in the provincial budget would shift the financial burden of accident-relate health-care costs from insurance companies to the taxpayers.

Sloan Mandel calls it a "double whammy" to those who are catastrophically impaired.


Sloan Mandel on Global News
May 7, 2015

Sloan Mandel comments on the Ontario Government's proposed cap of $1 million for catastrophic accidents victims.



Sloan Mandel on air interview on MOOSE FM Halibuton discussing the topic of water safety
Moose FM Haliburton 93.5
August 1, 2014



Doctors' association accused of using aggressive 'scorched earth' approach to defending malpractice suits
National Post
April 13, 2013


The Battle for the Personal Injury Dollar
Canadian Lawyer Magazine
November, 2012

Sloan Mandel interviewed by Global News about insurance premiums in Ontario.
August 19, 2011



Cases of Note  

Settlement for Severely Injured Teenager
Medical Legal Video
(YouTube Video)

On March 11, 2005, Kalika Webb, who then had just turned 17, was a backseat passenger in a car whose driver failed to negotiate a left-hand curve in the roadway resulting in a crash that caused her catastrophic injuries.




It was a beautiful late summer day and we were on our way to a restaurant to celebrate my 64th birthday when the accident happened. We parked in the parking lot of the restaurant and started to walk toward the entrance. My immediate attention was taken to the bizarre actions of a car in the parking lot ahead of me. I quickly stepped in between a parked truck and car; out of the direct path of the rampaging car. But that was not a safe place. The out of control car hit the truck on my right side and pinned me in between it and the car on my left. Five men did the impossible. They lifted the truck by the rear bumper and moved it sideways, freeing me to slip to the ground.

The x rays showed six fractures of my pelvis. Yes, I could wiggle my toes. Therapists, hospitals, doctors, nurses, and a very worried family, are all a blur now. I am a woman of serious Faith in Jesus Christ. I personally know His attention and Love throughout this ordeal. My wonderful husband literally laid down his life for me. During a hospital visit a friend suggested that we might be wise to talk to a lawyer. The thought had not crossed our minds. We were so involved in finding out if I would ever walk again.

Into our lives came Sloan Mandel from Thomson Rogers Lawyers; a kind, soft spoken, gentle, brilliant man who knew what to do and how to help me to the very best of his ability. He arranged for an Occupational Therapist to visit me and set the wheels in motion for layers upon layers of much needed help for my recovery. Mr. Mandel spoke with our Auto Insurance people, who then co-operated to the fullest in paying for all the bills. Every call to him was answered immediately and with his best attention. The time came for us to decide on settlement issues. Mr. Mandel advised me to go to mediation. This was also a very scary time for me. The process was completely foreign to me. But I trusted my lawyer. Mr. Mandel assured me that the end result was very much in my favour and I should agree to the terms. The accident caused such great physical and emotional pain which I cannot describe on paper, but Sloan Mandel took care of me so that all I was left to do was to heal. Of course his intervention on my behalf was a great deal more than what I have shared here. And healing has come. I have some reoccurring pain and handicap from this accident. My doctors and health care attendants were great. But because of the work of my brilliant lawyer, my future physical and financial needs are covered and I am seriously grateful to him.

- B. Huffman



I met Sloan during a very tough time in my life, a point where I didn't know what to do and if I even had a case. I knew I was hurt and knew I was wronged, I just didn't know if I could find someone who would believe in me and be willing to take my case. I had initially met with a few lawyers who didn't think I had a case, or didn't really take the time to hear me out. The first thing that was obvious about Sloan was that he really cares about his clients. During our first meeting, he took the time to sit down and hear my story, ask the tough questions, but did so with understanding and sympathy.

Sloan worked tirelessly on my case. He did his homework on my specific situation, researched, talked to experts, and challenged what I was being told "You don't have a case", when I knew in my heart I did.

All of Sloan's hard work resulted in me winning my case and sincerely words can't express my appreciation for what he has done for me and my family.

- D. T.


Dear Sloan,

We do not know where we would be if we did not have Sloan Mandel’s help through this most difficult period of our lives.

There were many occasions when we had only to pick up the telephone and talk to Sloan personally, to alleviate our fears, for guidance or direction, reassurance or answers to our questions and each time feel some level of comfort. Sloan worked on our case taking on tasks and dealing with issues and situations, some of them complicated and difficult, so we would not have to and so we could focus on immediate care needs. We knew, everyday, throughout the past five years, we were in good hands and that we were not alone in our fight for what we needed then, now and into the future.

Throughout the past five years we always felt like Sloan knew exactly what we needed and when - often even before we knew it ourselves. Sometimes we wondered how he knew. It was like he was right there with us. He was - everyday!

We will be forever thankful for all the time, hard work, trust and compassion Sloan Mandel and his team extended to our family and, most of all, for ensuring our daughter would be able to live the best life she can despite her tragedy.

Thank you Sloan.

- D. & M. Webb

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