Atty. Mark D. Lerner
Practices in the area personal injury litigation and health care law.
Health Care Law Attorney · Serving London, ON · 51+ Years Experience
Profile Summary
About Mark D. Lerner at a Glance
Mark D. Lerner is a health care attorney based in London, Ontario, practicing at Lerners LLP. They have 51+ years of legal experience, licensed to practice since 1975. Admitted to practice in Ontario (1975). Recognitions include Best Lawyers in America — Health Care Law (2026), Best Lawyers in America — Special Focus: (2026), and Best Lawyers in America — Product Liability (2026). Serves clients in London, ON and the surrounding metropolitan area.
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About Mark D. Lerner
Practices in the area personal injury litigation and health care law
Practice Areas Explained
Mark D. Lerner's Areas of Legal Practice
Each practice area below reflects the types of cases Mark D. Lerner handles, with a practical overview of what that area of law involves and how it may apply to your situation in London.
Health Care Law in London
Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.
Mark D. Lerner is one of 66,157 health care attorneys indexed nationally. Browse health care attorneys in Ontario →
Jurisdictional Context
Why Local Counsel Matters in London
Practicing law in Ontario. Legal matters in Ontario are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in London are typically filed in the local municipal court or the appropriate Ontario state district court, depending on subject matter and amount in controversy. An attorney licensed in Ontario brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Ontario courts without local counsel or pro hac vice admission.
London Courts and Legal Process
Choosing a London-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Ontario attorneys? Browse all attorneys in London or all attorneys in Ontario.
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Professional Profile
Why Clients in London Choose Mark D. Lerner
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark D. Lerner's practice in the field of health care.
Decade-Tested Legal Experience
Mark D. Lerner brings 51+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Focused Health Care Practice
Concentrating on health care means Mark D. Lerner's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.
Local Presence in London
A London-based practice means Mark D. Lerner attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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How People Find Mark D. Lerner Online
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Mark D. Lerner's Practice Areas & Specializations
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