Atty. Mark W. Tanner
Mark W. Tanner primarily represents victims of medical negligence and insurance bad faith, and also has substantial experience in cases involving disability insurance claims, civil rights claims, and class action litigation.
Mass Tort Litigation / Class Actions - Plaintiffs & More Attorney · Serving Philadelphia, PA · 36+ Years Experience
Profile Summary
About Mark W. Tanner at a Glance
Mark W. Tanner is a medical malpractice, personal injury, class action, and product liability attorney based in Philadelphia, Pennsylvania, practicing at Feldman Shepherd Wohlgelernter Tanner Weinstock & Dodig LLP. They have 36+ years of legal experience, licensed to practice since 1990. Admitted to practice in United States, Admitted pro hac vice in other states and Pennsylvania, Pennsylvania (1990). Educated at Temple University (J.D., 1990). Recognitions include Best Lawyers in America — Mass Tort Litigation / Class Actions - Plaintiffs (2026), Best Lawyers in America — Medical Malpractice Law - Plaintiffs (2026), and Best Lawyers in America — Personal Injury Litigation - Plaintiffs (2026). Serves clients in Philadelphia, PA and the surrounding metropolitan area.
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About Mark W. Tanner
- Mark W. Tanner primarily represents victims of medical negligence and insurance bad faith, and also has substantial experience in cases involving disability insurance claims, civil rights claims, and class action litigation
- An accomplished Philadelphia Personal Injury lawyer with a wide ranging practice, Mark has handled cases throughout the region and across the country, and has been appointed as a liaison counsel in mass tort litigation at both the state and federal court level
- He has secured a $22.4 million verdict for the victim of a negligently executed spine surgery, one of the largest medical malpractice verdicts in Pennsylvania
- Mark also secured a $7.9 million verdict, believed to be the largest jury verdict in Pennsylvania against an insurance company in a case alleging bad faith
- Mark has been recognized for seven consecutive years as one of the Top 10 Super Lawyers in Pennsylvania by Thomson Reuters
- He is the former president of The Philadelphia Trial Lawyers Association (2007-2008) and the 2005 recipient of its President’s Award
- In addition, Mark has been named by The National Trial Lawyers as a Top 100 Trial Attorney in the Civil Plaintiff category and in 2016 was appointed as a hearing committee member serving the disciplinary board of the Supreme Court of Pennsylvania
- In recognition of his success at trial, Mark was also one of the youngest attorneys ever invited to become a fellow of the prestigious International Academy of Trial Lawyers (membership limited to 500 lawyers)
- In additional to maintaining a robust practice, Mark is a passionate pro bono activist, representing underprivileged and neglected children as a child advocate for the non-profit Support Center for Child Advocates, where he has also served on the board of directors
- As a frequent lecturer, Mark has participated in more than 50 continuing legal education programs, and has taught trial advocacy, among other subjects, to law students and graduate LL.M. students at local area law schools
- He has lectured throughout the United States and, by invitation, to barristers in London
- When not in court, Mark enjoys traveling, hunting, fishing, and scuba diving, and he constantly struggles with his golf game
- Mark earned a B.A. in English Literature from the College of the Holy Cross, and his J.D. cum laude from Temple University Beasley School of Law
- He is licensed to practice in Pennsylvania, the U.S
- District Court for the Eastern District of Pennsylvania, the U.S
- District Court for the Middle District of Pennsylvania, the U.S
- Court of Appeals for the Third Circuit, and the Supreme Court of the United States
Practice Areas Explained
Mark W. Tanner's Areas of Legal Practice
Each practice area below reflects the types of cases Mark W. Tanner handles, with a practical overview of what that area of law involves and how it may apply to your situation in Philadelphia.
Medical Malpractice in Philadelphia
Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.
Mark W. Tanner is one of 48,593 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Pennsylvania →
Personal Injury in Philadelphia
Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.
Mark W. Tanner is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Pennsylvania →
Class Action in Philadelphia
Mark W. Tanner is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in Pennsylvania →
Product Liability in Philadelphia
Mark W. Tanner is one of 65,610 product liability attorneys indexed nationally. Browse product liability attorneys in Pennsylvania →
Jurisdictional Context
Why Local Counsel Matters in Philadelphia
Practicing law in Pennsylvania. Legal matters in Pennsylvania are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Philadelphia are typically filed in the local municipal court or the appropriate Pennsylvania state district court, depending on subject matter and amount in controversy. An attorney licensed in Pennsylvania 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 Pennsylvania courts without local counsel or pro hac vice admission.
Philadelphia Courts and Legal Process
Choosing a Philadelphia-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 Pennsylvania attorneys? Browse all attorneys in Philadelphia or all attorneys in Pennsylvania.
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Professional Profile
Why Clients in Philadelphia Choose Mark W. Tanner
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 W. Tanner's practice in the field of medical malpractice, personal injury, class action, and product liability.
Decade-Tested Legal Experience
Mark W. Tanner brings 36+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in United States, Admitted pro hac vice in other states and Pennsylvania, Pennsylvania, Mark W. Tanner can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering medical malpractice, personal injury, and class action, Mark W. Tanner can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Philadelphia
A Philadelphia-based practice means Mark W. Tanner attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Mark W. Tanner Handles in Philadelphia
Below is a representative sample of the types of matters Mark W. Tanner has experience with under Pennsylvania law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Mark W. Tanner directly to discuss the specifics of your situation.
Search Reference
How People Find Mark W. Tanner Online
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Mark W. Tanner's Practice Areas & Specializations
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