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Dennis R. Callahan, Personal Injury Attorney in Philadelphia, Pennsylvania

Over 36 years of legal practice · focused on Personal Injury and Product Liability

Philadelphia, PA

Practicing personal injury in Philadelphia since 1990.

36+
Years practicing
2
Bar admissions

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Quick answer

Dennis R. Callahan is an attorney based in Philadelphia, PENNSYLVANIA. The practice focuses on Personal Injury and Product Liability. Dennis has over 36 years of legal experience.

Based in
Philadelphia, PENNSYLVANIA
Experience
over 36 years
Known for
Personal Injury · Product Liability
  • Handles Personal Injury and Product Liability matters from Philadelphia, PENNSYLVANIA.
  • Over 36 years of practice as a licensed attorney.
  • Recognized with Best Lawyers in America — Personal Injury Litigation - Defendants (2026).

About Dennis R. Callahan: Dennis R. Callahan is an attorney based in Philadelphia, PENNSYLVANIA. The practice focuses on Personal Injury and Product Liability. Dennis has over 36 years of legal experience.

Areas of practice

Legal matters Dennis takes on

Dennis concentrates on personal injury and product liability. Each area below outlines the kind of case Dennis handles, typical outcomes to expect, and how the intake process starts.

Personal Injury cases in Philadelphia, Pennsylvania

Dennis takes personal injury matters in Philadelphia, Pennsylvania. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

Product Liability cases in Philadelphia, Pennsylvania

Dennis takes product liability matters in Philadelphia, Pennsylvania. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

Biography

Meet Dennis R. Callahan — personal injury lawyer in Philadelphia

Dennis R. Callahan is an attorney based in Philadelphia, PENNSYLVANIA. The practice focuses on Personal Injury and Product Liability. Dennis has over 36 years of legal experience.

Dennis has a special interest in disputes involving technical or scientific issues where he can utilize his engineering training. That technical training is also at the heart of his methodical and structured approach to representing his clients. His practice includes the defense of manufacturers, retailers, and property owners in a variety of product liability, pharmaceutical, and premises liability actions. In addition, Dennis represents businesses in commercial litigation, contract disputes, and business-related tort claims, and he has significant experience with the complex legal and factual issues that arise in retrospective and loss-sensitive insurance premium collection disputes.

Dennis's approach to personal injury cases

Dennis has a special interest in disputes involving technical or scientific issues where he can utilize his engineering training. That technical training is also at the heart of his methodical and structured approach to representing his clients. His practice includes the defense of manufacturers, retailers, and property owners in a variety of product liability, pharmaceutical, and premises…

The kind of cases Dennis takes

Dennis reviews new inquiries case-by-case for personal injury and product liability matters in Philadelphia and the surrounding Pennsylvania area.

Credentials

Education, bar admissions, and languages

  • Syracuse University

    J.D. · 1990

  • Cornell University

    B.S. · 1985

Jurisdictions

Dennis's state bar admissions

  • New Jersey

    1990 · ACTIVE

  • Pennsylvania

    1990 · ACTIVE

Dennis studied at J.D. in Syracuse University and B.S. in Cornell University.

Law school and academic background

Dennis completed J.D. in Syracuse University and B.S. in Cornell University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Dennis runs in Pennsylvania is where that training gets applied to real client questions.

Recognition

Recognition and thought leadership

Dennis has received 9 formal recognitions from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Personal Injury Litigation - Defendants

    2026

  • Best Lawyers in America — Product Liability Litigation - Defendants

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Commercial Litigation

    2026

  • Best Lawyers in America — Litigation - Intellectual Property

    2026

  • Best Lawyers in America — Awards:

    2026

  • Best Lawyers in America — Selected to

    2026

  • Best Lawyers in America — P

    2026

  • Best Lawyers in America — ennsylvania Super Lawyers

    2026

Legal awards and honors

Best Lawyers in America — Personal Injury Litigation - Defendants (2026). Best Lawyers in America — Product Liability Litigation - Defendants (2026). Best Lawyers in America — Additional Areas of Practice: (2026). Best Lawyers in America — Commercial Litigation (2026). Best Lawyers in America — Litigation - Intellectual Property (2026). Best Lawyers in America — Awards: (2026).

Locations

Dennis R. Callahan's office in Philadelphia

Dennis's primary office is at 1600 Market Street, Philadelphia, Pennsylvania, 19103-7401. In-person meetings are by appointment; a phone intake usually comes first.

Main office

1600 Market Street

Philadelphia, Pennsylvania 19103-7401

Open in Google Maps

Client feedback

Client reviews of Dennis R. Callahan

Dennis has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Dennis R. Callahan — what to expect in your first consultation

Working with a new personal injury attorney should feel structured. Here's how the first two conversations with Dennis usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Dennis charges for the initial consult. That fee is credited toward representation if you retain Dennis's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Dennis will tell you what matters and what doesn't.

Questions to ask a personal injury attorney in Philadelphia, Pennsylvania

A short list to run through before you commit: How many personal injury matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Dennis

Dennis discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in personal injury practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every personal injury matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Dennis confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Dennis's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many personal injury practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Dennis R. Callahan

  • How much does it cost to hire Dennis for a personal injury case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Dennis walks through the likely range during the consult so there are no surprises.

  • Does Dennis offer a free consultation?

    Dennis charges for the initial consult; that fee is credited toward representation if you retain Dennis's office. Some personal injury attorneys offer free consults — check Dennis's current terms during booking.

  • How long do personal injury cases in Pennsylvania typically take?

    Simple personal injury matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Dennis gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Dennis take my case if I'm outside Philadelphia?

    Dennis is licensed in Pennsylvania. Matters governed by Pennsylvania law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Dennis will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Dennis?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Dennis will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Dennis accepting new personal injury clients right now?

    Dennis's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Personal Injury attorneys serving Philadelphia, Pittsburgh and Harrisburg in Pennsylvania

Dennis handles personal injury matters throughout Pennsylvania. Each city below is a direct link into the search page for verified personal injury attorneys in that community.

More counsel

If Dennis's intake is full or the fit isn't right, these personal injury attorneys in Philadelphia handle similar matters. Every profile below is verified and open to consultations.