Best Medication Error Lawyers in Ontario (2026)

The medication error lawyers in Ontario we'd call first, drawn from every city list we've published there and the firms whose own work shows these cases.

Sources checked November 7, 2026

5 lawyers and firms

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The short answer

Our featured firm in Ontario is Diamond & Diamond Lawyers LLP. Diamond & Diamond Lawyers LLP is our featured partner in Ontario and is listed first. Of the 6 firms that show medication error work on our 10 city lists in Ontario, Paul Cahill scores highest on malpractice focus, published results, client reviews and experience, followed by Gluckstein LLP and Bergel Magence LLP. Each firm keeps its best score from the cities it serves; open a city for its full list.

Best Medication Error Lawyers in Ontario

Featured
1
Diamond & Diamond Lawyers LLP
Jeremy Syrtash
Jeremy Syrtash leads the medical malpractice litigation practice at Diamond & Diamond Lawyers LLP. He earned a BA from Yeshiva University (2010) and a JD from the University of Ottawa (2013), was called to the Bar of Ontario in 2014, and has acted as counsel and co-counsel in medical malpractice cases across Canada, many involving pediatric and obstetrical negligence.
Called to the Bar of Ontario, 2014 · JD, University of Ottawa · Best Lawyers: Ones to Watch in Canada, Health Care Law (2024 to 2027)
Free case review 1-800-567-HURT Website
2
Paul Cahill
4.816 Google reviewsRated 4.8 out of 5 on Google from 16 reviews
Best for: Birth injury and diagnostic errors
Medical negligence makes up most of the work at Paul Cahill - Medical Malpractice Lawyer.
On our lists for Toronto, Mississauga, Markham and Oakville.
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How they were picked
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
Gluckstein LLP
4.8168 Google reviewsRated 4.8 out of 5 on Google from 168 reviews
Best for: Birth injury and HIE claims
Gluckstein Lawyers was founded in 1962, and that long history supports its birth injury and medical malpractice practice, with HIE and cerebral palsy claims listed on its site alongside surgical errors and other medical injuries.
On our lists for Toronto, Ottawa, Mississauga and Brampton.
Call Website Free case review Is this your firm?
How they were picked
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
4
Bergel Magence LLP
4.7206 Google reviewsRated 4.7 out of 5 on Google from 206 reviews
Best for: North York families considering malpractice claims
If you're considering Bergel Magence LLP ⚖️ Personal Injury Lawyers, its North York office is about 15 km from Toronto. Andrew Bergel and Ilan Bergel are named partners at the firm, which was founded in 1972.
On our lists for Toronto, Markham, Vaughan and Oakville.
Call Website Free case review Is this your firm?
How they were picked
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
5
Nelligan Law
4.7291 Google reviewsRated 4.7 out of 5 on Google from 291 reviews
Best for: Misdiagnosis and surgical error claims
Read Nelligan Law's reviews with care: some cover employment matters rather than medical negligence. One reviewer says they were disappointed by the amount left after legal fees in an employment dispute.
On our list for Ottawa.
Call Website Free case review Is this your firm?
How they were picked
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

What clients say about medication error lawyers in Ontario

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.

David K.
November 2025 · Mississauga, Ontario
“Jim Davidson and his team at his firm are very experienced and professional in what they do. They cut no corners and handled my case with professionalism. He put me at ease throughout the legal process and showed me consistent support through my case. I highly recommend Jim and his team at Davidson Cahill Morrison LLP.”
About Davidson Cahill Morrison LLPGoogle reviewRead it on Google
Ashley E.
October 2026 · Ottawa, Ontario
“I have had the pleasure of working with Erin McEwen, an outstanding Trademark Agent at Nelligan Law, for several years. Erin consistently provides exceptional, high-quality, and timely support on our clients’ trademark matters in Canada. In addition to her impressive professionalism and expertise, Erin is wonderful...”
About Nelligan LawGoogle reviewRead it on Google
Andrea K.
March 2026 · Toronto, 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

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How a malpractice claim usually moves in Ontario

1.Something went wrong
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2.Get your records
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3.Free case review
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4.Medical opinion
A doctor checks whether the care fell short.
5.Start the claim in time
Your lawyer starts the claim before the deadline.
6.Settlement or trial
Many claims settle. Some go to a judge or jury.

Medication Error Lawyers by city in Ontario

Photos: Toronto, Dillan Payne, CC BY-SA 4.0; Ottawa, No machine-readable author provided. Arctic.gnome assumed (based on copyright cl, CC BY 2.5; Mississauga, The Eloquent Peasant, CC BY 4.0; Brampton, Peter K Burian, CC BY-SA 4.0; Hamilton, AI-generated image; London, Mcalpinestudios, CC BY-SA 4.0; Markham, Mhsheikholeslami, CC BY-SA 4.0; Vaughan, Dillan Payne, CC BY-SA 4.0; Oakville, Canmenwalker, CC BY 4.0; Richmond Hill, Raysonho @ Open Grid Scheduler / Scalable Grid Engine, CC0. Via Wikimedia Commons.

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