About John A. Nicholson

Medical malpractice lawsuits are the main focus of John A. Nicholson's civil litigation work at Cohen Highley LLP, where John is a partner. The rest of the practice reaches into personal injury, estate litigation, commercial and insurance disputes, and professional regulation matters.

Burlington is where John was born, and London has been home for 20 years now. Outside the office, John's three children come first. Since 2020 John has also served the local bar as a trustee of the Middlesex Law Association and one of its Bench and Bar representatives.

Western University's law school is where John earned numerous awards and finished in the top 10% of the class, ahead of a 2006 call to the bar. Since then John's cases have been heard at every level of Ontario's courts, with appeals before the Divisional Court as well as the Court of Appeal for Ontario.

John also takes medical malpractice questions on Cohen Highley's On Air segments, and the message there is direct. A disappointing result from medical care isn't malpractice by itself, and these claims are hard to bring and meet a vigorous defence.

Practice areas

Medical malpractice claims

Medical malpractice lawsuits are the particular emphasis of John's civil litigation work. John has named misdiagnosis, delayed diagnosis, miscommunication, surgical and medication errors and unnecessary surgery on the firm's On Air segments as examples of the errors behind these claims.

Professional regulation

Professional regulation matters are part of John's practice. John has also discussed health care college investigations on the firm's On Air segments, from what can trigger one to how they can end.

Education & credentials

  • Law degree (Dean's Honour List, top 10% of the class), Western University
  • History degree, highest honours, Carleton University
  • Called to the bar (2006)

Memberships & affiliations

In the community

  • John chaired the Middlesex Law Association's Opening of the Courts Committee for the 195th Fall Opening of the Courts, held at Museum London on September 19, 2023.
  • For the Middlesex Law Association's Straight From the Bench Conference in 2025, John sat on the conference committee.

Is this you?

Fix or remove this listing, or add a free listing badge

Something wrong with this listing? Tell us and we’ll hide it right away while we review your request, then correct it or take it down.

Add your free listing badge

Add the free LawOnline listing badge to your website. It tells visitors you’re listed in an independent Canadian lawyer directory and links back to this profile. Being listed isn’t a certification or an endorsement, and the badge doesn’t mean we’ve checked your credentials.

LawOnline.ca Canadian Lawyer Directory listing badge

This listing was generated by AI from public sources in October 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm John A. Nicholson’s licence and standing in the Law Society of Ontario directory ↗

How this data is compiled and checked · Correct or remove this listing