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Malpractice Center

Best Surgical Error Lawyers in Mississauga, ON (2026)

This evidence-based 2026 list compares surgical error lawyers serving Mississauga through their published results and client feedback, with a look at what each practice handles.

Sources checked

5 lawyers and firms

Skyline of Mississauga
Photo: The Eloquent Peasant, CC BY 4.0, via Wikimedia Commons

The short answer

Our featured firm in Mississauga is Diamond & Diamond Lawyers LLP, where Jeremy Syrtash leads the medical malpractice group. Among the firms we reviewed, Paul Cahill stands out for its heavy focus on medical negligence, with an $11.5 million birth-injury verdict among its published trial results. Ask who would handle your surgical claim before you call, and check the fees. Check the office location, too. Ontario's discovery-based limitation period needs early attention, so see the Ontario malpractice guide.

At a glance

  1. 1Diamond & Diamond Lawyers LLPJeremy SyrtashFeatured
  2. 2Paul Cahill4.8 out of 5
  3. 3Sommers Roth & ElmalehFree consultationNo rating
  4. 4Thomson Rogers LLPFree consultation4.8 out of 5
  5. 5Gluckstein LLPFree consultation4.6 out of 5

Best Surgical Error Lawyers in Mississauga

  1. Featured
  2. Paul Cahill logo2

    Paul Cahill

    4.816 Google reviewsRated 4.8 out of 5 on Google from 16 reviews

    Best for: Medical negligence trial experience

    Among Paul Cahill - Medical Malpractice Lawyer's published results is an $11.5 million jury verdict for a child born with cerebral palsy. The firm reports another trial win against an emergency room physician in a case involving a mother's death. Neither result involved an error during surgery.

    CallWebsiteFree case reviewIs this your firm?
    How they were picked

    Stood out in our review for the recognition it has earned and how much of its work is medical malpractice.

    We order firms by how much of their work is medical malpractice, the results they publish, what their clients say, their experience, their standing with the regulator and the recognition they have earned, all from public records and the firms' own sites. How lists are made

  3. Sommers Roth & Elmaleh logo3

    Sommers Roth & Elmaleh

    Best for: Delivery-related injury claims

    Injuries during pregnancy and delivery account for most of Sommers Roth & Elmaleh's published results. After a forceps and vacuum delivery, a girl with cerebral palsy received over $15.6 million; another award was $8 million following prolonged tachysystole during labour. The practice handles only medical malpractice.

    WebsiteFree case reviewIs this your firm?
    How they were picked

    Stood out in our review for how much of its work is medical malpractice and the results it publishes.

    We order firms by how much of their work is medical malpractice, the results they publish, what their clients say, their experience, their standing with the regulator and the recognition they have earned, all from public records and the firms' own sites. How lists are made

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  5. Thomson Rogers LLP logo4

    Thomson Rogers LLP

    4.8300 Google reviewsRated 4.8 out of 5 on Google from 300 reviews

    Best for: Claims involving contested medical care

    Thomson Rogers LLP reports a medical-malpractice success that the Court of Appeal upheld in Denman v. Radovanovic, 2024 ONCA 276. It dates back to 1935. The firm's site discusses surgical errors and names Aleks Mladenovic and Sebastian di Domenico among its lawyers.

    CallWebsiteFree case reviewIs this your firm?
    How they were picked

    Stood out in our review for its years of experience and what its clients say.

    We order firms by how much of their work is medical malpractice, the results they publish, what their clients say, their experience, their standing with the regulator and the recognition they have earned, all from public records and the firms' own sites. How lists are made

  6. Gluckstein LLP logo5

    Gluckstein LLP

    4.637 Google reviewsRated 4.6 out of 5 on Google from 37 reviews

    Best for: Surgical claims with serious injuries

    Gluckstein Lawyers was founded in 1962 and lists medical malpractice as part of its work, which also covers catastrophic injury and other personal-injury claims. The firm's medical-negligence information covers surgical errors, and you'll also find material about other problems there, such as errors involving medication. Charles E. Gluckstein is the firm's managing partner; Richard Halpern and David Lackman serve as senior counsel.

    CallWebsiteFree case reviewIs this your firm?
    How they were picked

    Stood out in our review for its years of experience and the recognition it has earned.

    We order firms by how much of their work is medical malpractice, the results they publish, what their clients say, their experience, their standing with the regulator and the recognition they have earned, all from public records and the firms' own sites. How lists are made

Where they are in Mississauga

What clients say about these Mississauga lawyers

Google reviews of the firms on our lists, quoted as their clients wrote them and linked to where they were posted. We don't write, edit or pick reviews for pay.

  • Kate I.

    July 2026 · Mississauga, Ontario

    “⭐⭐⭐⭐⭐ I cannot recommend Jennifer Ilton and Yoni Silberman of Bogoroch & Associates LLP highly enough. After our serious motor vehicle collision on Highway 400 North in November 2023, they stood by us every step of the way. They fought diligently to protect our insurance rights while also providing something just...”

    About Bogoroch & Associates LLPGoogle reviewRead it on Google

  • MICKE C.

    October 2026 · Mississauga, Ontario

    “Thanks so much DARCY, I TRULY DO APPRECIATE EVERYTHING TRL HAS ACCOMPLISHED FROM THE INFANCY STAGE AS THEIR CLIENT AND EVERY DAY THEREAFTER. IIN REFERRENCE TO THE THEREAFTER STAGE AS THEIR CLIENT I HAD SEVERAL CONVERSATIONS WITH BOTH LAWYERS DARCY M. & HIS PARTNER MICHAEL B. OF WHICH WERE ALL PROFESSIONAL, POSITIVE...”

    About Thomson Rogers LLPGoogle reviewRead it on Google

  • Andrea K.

    March 2026 · Mississauga, Ontario

    “All the praises go out the the team at Gluckstein Personal Injury Lawyers. My sister started the file with you as I was unable to communicate. Thank you for working with her and getting my file started right away, until I was able to work with the TEAM. Gluckstein worked very hard and making sure I was compensated...”

    About Gluckstein LLPGoogle reviewRead it on Google
See all reviews
How a malpractice claim usually moves in Ontario

  1. 1.Something went wrong

    Write down dates and names while they're fresh.

  2. 2.Get your records

    Ask for your full chart and test results.

  3. 3.Free case review

    A lawyer looks at what happened, free.

  4. 4.Medical opinion

    A doctor checks whether the care fell short.

  5. 5.Start the claim in time

    Your lawyer starts the claim before the deadline.

  6. 6.Settlement or trial

    Many claims settle. Some go to a judge or jury.

Your deadline: 2 years from when you found outRead the Ontario law guide

Malpractice claims in Mississauga: the rules that matter

The filing deadline in Ontario
  1. The clock startsWhen you found out, or should have
  2. Time to start a claim2 yearsMiss it and the claim is usually lost.
  3. At the very most15 yearsafter the treatment, with a few exceptions
Limits on damages in Ontario
  • Pain and sufferingCapped at about $484,330
  • All damages togetherNo overall cap
  • Expert paperworkNo affidavit or certificate of merit is required to start a claim.

Read the Ontario law guideWork out your own deadline

Basic limitation period in Ontario
2 years
Source
Ultimate limitation period
15 years
Source

Choose around the operation and the deadline

Start with your surgery. Tell the lawyer which procedure you had, then explain when you first began to suspect that something had gone wrong. Ask whether they'd want the operative report or anaesthesia chart, for example, before they begin reviewing your records. Although a firm lists surgical errors, that's only a starting point; you'll need to ask what work it's done involving an operation like yours.

Ask about the work, not only the result

  • Before proceeding, ask who would assess your claim and remain responsible for it. If you meet a lawyer, would they handle your file?
  • Find out whether that lawyer has handled your procedure. Although birth-injury verdicts show medical-negligence work, they won't answer every question you have when your injury involves a different operation.
  • Before proceeding, ask how the firm would get expert reports addressing the standard of care and causation. To start a claim in Ontario, you don't need an affidavit or certificate of merit. Under the court's rules, you must still serve expert reports.
  • Find out how often the firm would contact you. If your main contact isn't available, ask what happens and who would answer your calls.

Location deserves a look, too. While Sommers Roth & Elmaleh and Gluckstein Lawyers have offices in Mississauga, the other offices listed here are in Toronto. Ask where you'd meet before you decide whether travelling there would work for you.

Get the payment terms in writing

For free consultations and contingency fees, Sommers Roth & Elmaleh and Bogoroch & Associates LLP list both options. You can also get free consultations at Thomson Rogers LLP and Gluckstein Lawyers. Although the first discussion is free, representation isn't. If you're considering contingency fees, ask what percentage applies and how the outcome affects what you pay. Expenses need a separate question, too. Before committing, ask for the agreement in writing.

Questions people ask

How long do I have to start a surgical-error claim in Mississauga?
Once discovery occurs, Ontario generally gives you two years. Discovery happens when you know, or reasonably ought to know, that you're injured, that the health care provider contributed to the injury, and that a lawsuit would be appropriate. There's also a 15-year ultimate period under the Limitations Act, 2002. Knowing the surgery date isn't enough to establish the deadline. To assess your circumstances, speak with an Ontario lawyer.
Do I need an expert report before starting an Ontario malpractice claim?
To start the claim in Ontario, you don't need an affidavit or certificate of merit. Under the court's rules, you'll still need to serve expert reports addressing the standard of care and causation. Before proceeding, ask how the firm would review your surgical care and get those reports prepared. To learn what that process requires in your case, speak with a lawyer.
Which listed firms have offices in Mississauga?
You'll find Mississauga offices for Sommers Roth & Elmaleh and Gluckstein Lawyers. From Mississauga, the Toronto offices listed by Paul Cahill - Medical Malpractice Lawyer and Thomson Rogers LLP are 24 km away. At 23 km away, Bogoroch & Associates LLP's office is in Toronto. Before deciding whether that works for you, find out where you'd meet the lawyer who would be responsible for your claim.
Does Ontario limit compensation in a surgical-error claim?
For economic losses such as lost income or future care, Ontario doesn't set a statutory cap. Nationally, non-pecuniary damages are limited by a judge-made trilogy cap. You can't work out your claim's worth from either rule. Nor can the firms' published awards forecast it. To understand which losses may matter in your circumstances, speak with an Ontario lawyer.
Is the deadline different if a child was injured during surgery?
While the claimant is under 18 and has no litigation guardian for the claim, Ontario's two-year period doesn't run. If a claim arises while a minor has no litigation guardian, the 15-year ultimate period is also suspended, as addressed in Wong v. Lui, 2023 ONCA 272. Age alone isn't enough to rely on. To assess the child's circumstances, speak with a lawyer.

Sources

  1. Limitations Act, 2002, S.O. 2002, c. 24, Sched. B, Government of Ontario (e-Laws)
  2. Claims from minors and the 15-year ultimate limitation period in Ontario, Borden Ladner Gervais LLP
  3. Non-Pecuniary Damages Upper Limits (monthly indexed figures, 2024 to 2026), McKellar Structured Settlements
  4. Key Numbers for 2025 (trilogy cap and indexation), McCague Borlack LLP
  5. Malpractice Center methodology, Malpractice Center

Nearby cities

Other lists in Mississauga

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