Atty. John I McMahon

Atty. John I McMahon

John I McMahon is a lawyer practicing nursing home litigation, federal criminal defense and state criminal defense, personal injury and federal civil rights and 43 other areas of law. John has been licensed for 38 years.

Norristown Norristown 38 yrs experience 38 year
Call (215) 650-3860 Book Appointment

Profile Summary

About John I McMahon at a glance

John I McMahon is a Member based in Norristown, Pennsylvania, practicing at McMahon, McMahon & Lentz. They have 38+ years of legal experience, licensed to practice since 1988. Their practice focuses on divorce, car accidents, child custody, medical malpractice, and personal injury. Admitted to practice in Pennsylvania (1988) and Washington (2019). Educated at Widener University School of Law (J.D., 1988). Recognitions include Peer Reviewed. Serands clients in Norristown, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John I McMahon is a lawyer practicing nursing home litigation, federal criminal defense and state criminal defense, personal injury and federal civil rights and 43 other areas of law
  • John has been licensed for 38 years
  • John practices at McMahon, McMahon & Lentz in Norristown, PA

Practice Areas Explained

John I McMahon's Areas of Practice

Each practice area below reflects the types of cases John I McMahon handles, with a brief overview of what that area of law covers.

Divorce

A divorce attorney guides you through property division, spousal support, custody, and the final decree — contested or uncontested.

John I McMahon is one of 50,487 divorce attorneys indexed nationally. Browse divorce attorneys in Pennsylvania →

Car Accidents

Hurt in a car crash? Car accident lawyers fight insurance companies for fair compensation — free consult, no fee unless you win.

John I McMahon is one of 36,807 car accidents attorneys indexed nationally. Browse car accidents attorneys in Pennsylvania →

Child Custody & Visitation

John I McMahon is one of 31,241 child custody attorneys indexed nationally. Browse child custody attorneys in Pennsylvania →

Medical Malpractice

Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.

John I McMahon is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Pennsylvania →

Personal Injury

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.

John I McMahon is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Pennsylvania →

Jurisdictional Context

Why local counsel matters in Pennsylvania

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 Norristown 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 andnue, 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.

Looking for additional Pennsylvania attorneys? Browse all attorneys in Norristown or all attorneys in Pennsylvania.

Frequently Asked

Common questions about John I McMahon

Where is John I McMahon's law office located?
John I McMahon's law practice is located in Norristown, Pennsylvania. The firm is McMahon, McMahon & Lentz. You can contact the office directly through this profile page.
What practice areas does John I McMahon handle?
John I McMahon focuses on divorce, car accidents, child custody, medical malpractice, personal injury. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has John I McMahon practiced law?
John I McMahon has 38+ years of legal experience and has been licensed since 1988.
Where did John I McMahon go to law school?
John I McMahon earned their education at (J.D., 1988).
How can I contact John I McMahon for a consultation?
You can contact John I McMahon directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has John I McMahon received?
John I McMahon's notable recognition includes: Peer Reviewed.

Education

J.D.
Widener University School of Law
- 1988

Awards

Peer Reviewed

Bar Admissions

Pennsylvania
Admitted: 1988
Washington
Admitted: 2019

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