Best Misdiagnosis Lawyers in Richmond Hill, ON (2026)
To build this evidence-based 2026 list of Richmond Hill-area misdiagnosis lawyers, we considered what each firm's practice covers, its published results and client reviews.
Our featured firm in Richmond Hill is Diamond & Diamond Lawyers LLP, where Jeremy Syrtash leads the medical malpractice group. Among the firms we reviewed, Gluckstein LLP stands out. Clients describe clear explanations from a firm with a long history that handles misdiagnosis claims. Before you call, find out who takes diagnosis claims and check whether the firm has published results that relate to yours. Ask about fees, including how case costs work. You can use the Ontario malpractice guide to learn about the limitation period and other rules before discussing them with a lawyer.
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)
Best for: Established team handling misdiagnosis claims
Since 1962, Gluckstein LLP has handled personal injury work. Managing partner Charles E. Gluckstein and senior counsel Richard Halpern are part of the team, and the firm's site includes misdiagnosis in its medical malpractice work. Recognition from Best Lawyers in Canada and Canadian Lawyer, together with that history, supports its place here.
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
Best for: Families seeking documented appellate experience
According to Thomson Rogers LLP's site, a successful medical malpractice lawsuit was upheld in Denman v. Radovanovic, 2024 ONCA 276. Although that gives you a concrete result, the site doesn't describe it as a misdiagnosis result. Founded in 1935, the firm includes misdiagnosis on its site.
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
Not sure who to call first?
Tell us what happened. A malpractice lawyer who serves Richmond Hill can look at it with you, and it costs nothing.
Best for: Local medical malpractice representation
Harte Law's practice is devoted to medical malpractice, and its office is in Richmond Hill. Its site lists misdiagnosis alongside hospital errors and birth injury claims. Published results include a $10,531,000 settlement following an infection-control negligence trial and a $29,500,000 settlement involving hepatitis B infections after EEG procedures.
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
If your family wants to discuss a diagnosis in Tagalog or Pangasinan, Reyes Tam Law lists both languages and offers a useful starting point. Named as a barrister and solicitor, Dana Reyes is also described as a personal injury advocate. Alongside wrongful death, the firm's site lists misdiagnosis.
Stood out in our review for the recognition it has earned 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
When describing the missed diagnosis, explain when you learned about the harm. To start a claim in Ontario, you generally have 2 years from discovery. Ask a lawyer to assess when discovery occurred and whether rules for a child change how the clock runs.
Review the medical record
Along with your chart, bring a written account of what happened. Before the lawyer assesses whether the provider's care fell below the required standard and contributed to your injury, ask what other records or medical opinions would help.
Start the claim
If the lawyer takes the case forward, discuss when to file the statement of claim within the applicable limitation period. Filing that document starts your lawsuit. To start a medical malpractice claim in Ontario, you don't need an affidavit or certificate of merit.
Develop the medical evidence
Under Ontario's court rules, expert reports on the standard of care and causation must be served. By addressing what care the provider should have given, those reports also examine whether the alleged failure caused the harm or contributed to it.
Discuss resolution
Ask how your case might involve settlement talks or a trial. While Harte Law publishes settlements, Thomson Rogers LLP reports a malpractice decision that was upheld on appeal. Although these illustrate different paths, neither promises how your case will end or how long it'll take.
Malpractice claims in Richmond Hill: the rules that matter
The filing deadline in Ontario
The clock startsWhen you found out, or should have
Time to start a claim2 yearsMiss it and the claim is usually lost.
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.
A written agreementThe share the lawyer takes, set out before work starts.
If you recover moneyThe agreed share and the case costs come out of it.
If the claim failsNo legal fee on a contingency agreement. Ask about costs.
According to several firms here, they work on contingency. If the claim fails, there's no lawyer's fee; otherwise, the lawyer receives a share of any recovery. You'll need to discuss case costs separately. Because medical records and opinions cost money, along with court fees, ask who advances those expenses and whether you could owe them even if you don't recover anything. You can't establish a usual way of funding costs from these firms' listings. Before signing, get the terms in writing so you know how the firm calculates its fee and gets expenses repaid. Although all listed firms offer a free consultation, check how much they'll review during it.
According to all six listed firms, you won't pay for the consultation. Contingency work is also listed by four firms.
What to bring to your first call
Your symptoms written as a timeline, including appointments and diagnoses
Dates showing when you learned about the missed diagnosis and its effects
Names identifying the providers involved
Medical charts you already have, along with test results
Hospital or insurer letters you've received
Details of lost income, along with your bills
Photos related to the injury, if you have any
Your questions about communicating, as well as fees and case costs
Questions to ask a lawyer
1When you've handled diagnoses like mine, how many claims were involved?
2Who handles my file, and will that person also review my records?
3What's the possible expiry date for my limitation period?
4To support my claim, which medical opinions are needed?
5During the free consultation, what's covered?
6How is your fee calculated if my claim leads to a recovery?
7Who covers the case costs? If my claim fails, what might I owe?
8While you're assessing my claim and then handling it, how will I receive updates?
Choosing a misdiagnosis lawyer in Richmond Hill
Rather than a rating, start with your diagnosis. When you explain what happened, describe the symptoms that brought you to care and the provider's response, then say when you learned something was missed. Find out what similar diagnostic claims the lawyer has handled. Although a published birth injury or infection-control result shows malpractice work, it doesn't tell you the lawyer has handled your condition.
Check the office's location before you arrange a meeting. While Harte Law is in Richmond Hill, all the other listed offices are outside the city. Find out where you'd meet in person and whether records can be reviewed remotely. Alongside Reyes Tam Law's listed Tagalog and Pangasinan, Kamyab Law lists Farsi. If one of those is the language you need, ask who at the firm can speak with you.
Ask how the file would be handled
Before the firm investigates, ask who reviews your chart and decides, then check whether that person handles your claim.
Find out which medical opinions your claim would need. Although Ontario doesn't require a certificate of merit to start, its court rules require expert reports on the standard of care and causation to be served.
Find out how updates will reach you. Although reviews here praise clear communication, they also describe delays during intake. While the firm assesses your file, ask who you can turn to with questions.
When the firm discusses relevant results, ask it to explain how those cases resemble yours. Even a large settlement can't forecast what happens with your claim.
According to all the listed firms, a consultation is free. Ask what that includes. Before treating an initial conversation as a medical-record assessment, remember they're not the same thing. According to four firms, they also work on contingency: if you recover money, the lawyer receives a share as a fee, but if the claim fails, there's no lawyer's fee. Get those terms from the firm in writing.
Don't confuse case costs with the lawyer's own fee. Before the claim proceeds, ask who pays for records and medical opinions, including what you could owe if the claim fails. If someone promises a particular settlement or gives unclear cost answers, be cautious. Because this is general information rather than legal advice, have an Ontario lawyer assess your circumstances and the relevant dates.
Questions people ask
How soon do I need to contact an Ontario misdiagnosis lawyer?
To get the dates checked, contact a lawyer promptly. You generally have 2 years from discovery to start a claim in Ontario. You discover a claim when you know, or reasonably should know, about the injury and the provider's contribution, and that bringing a lawsuit would be appropriate. To understand what that test means for your situation, ask an Ontario lawyer.
Does Ontario also have an ultimate limitation period?
Alongside the basic period that runs from discovery, Ontario's Limitations Act, 2002 sets a 15-year ultimate limitation period. When a claim involves a child, particular suspension rules apply. You can't find your deadline from either figure alone. Before relying on a deadline, ask an Ontario lawyer to review the treatment dates and explain the rules that apply to your claim.
Can I speak with a listed firm without paying for the first consultation?
According to all six listed firms, you can have a free consultation. Check what that includes before calling. Because it may only be an initial discussion, ask whether the firm will review any records and whether you'd pay for a further assessment. Even if the consultation is free, you'll still need to find out the terms for having the firm handle your claim.
What does a misdiagnosis claim need beyond a wrong diagnosis?
Even if a diagnosis was wrong, the standard-of-care and causation questions remain. To answer those, you need to examine what care was required and whether the provider's failure contributed to the injury. Under Ontario's court rules, expert reports addressing those issues must be served. Before the lawyer assesses your particular diagnostic delay, ask what medical evidence they'd need.
Do I need a medical expert's certificate before starting a claim?
To start a claim in Ontario, you don't need an affidavit or certificate of merit. Although that certificate isn't required, the court's rules still require service of expert reports on the standard of care and causation. Before medical opinions are obtained, ask how the lawyer would get them and who would pay. Even without a certificate requirement, you shouldn't assume the claim needs no medical assessment.
How long does a misdiagnosis claim take?
You can't count on a fixed timetable for your claim. Although the listed results include settlements and a malpractice judgment upheld on appeal, they don't tell you how long your own case would take. Before proceeding, ask what steps your medical evidence may require and how updates will reach you. Ask about anything that could slow the claim or otherwise affect its progress.
Are the deadlines different if my child was harmed?
While a person is under 18 and has no litigation guardian for the claim, the 2-year period doesn't run. If a claim arises while the claimant is a minor without a litigation guardian, the 15-year ultimate period is also suspended, as addressed in Wong v. Lui, 2023 ONCA 272. To understand whether those conditions apply to your child, speak with an Ontario lawyer.
What should I do if a loved one died after a missed diagnosis?
Start by gathering your available records. When writing down the treatment dates, include when your family learned that a diagnosis may have been missed. On their sites, several listed firms say they handle wrongful death. To find out who can bring a claim in your circumstances and which limitation period applies, ask an Ontario lawyer. For your family, this list can't answer either of those questions.
Is there a cap on compensation in Ontario?
For economic losses such as lost income or future care, Ontario has no statutory cap. Nationally, non-pecuniary damages are limited by the judge-made trilogy cap. Losses such as pain and suffering fall within those damages. Because these rules don't establish what your claim is worth, ask an Ontario lawyer to explain how they apply to the harm and losses you've suffered.
Do I have to hire a lawyer with an office in Richmond Hill?
While Harte Law has an office in Richmond Hill, every other firm on this list has its offices outside the city. When discussing the lawyer's experience with your diagnostic issue, also consider what the location would mean in practice. Before arranging a meeting, ask where you'd go and whether the firm can review records remotely. A firm can serve Richmond Hill without necessarily having an office there.
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Jeremy Syrtash
