Atty. William J. Keahon

Atty. William J. Keahon

William J. Keahon is a lawyer practicing criminal defense, dui & dwi, speeding & traffic ticket.

Central Islip Central Islip 54 yrs experience 54 year
Call (516) 985-2078 Book Appointment

Profile Summary

About William J. Keahon at a glance

William J. Keahon is a dui/dwi, criminal defense, and traffic attorney based in Central Islip, New York. They have 54+ years of legal experience, licensed to practice since 1972. Admitted to practice in New York (1972) and U.S. District Court, Eastern and Southern Districts of New York (1972). Educated at St. John's University J.D. (—). Serands clients in Central Islip, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William J. Keahon is a lawyer practicing criminal defense, dui & dwi, speeding & traffic ticket
  • William has been licensed for 54 years
  • William practices in Central Islip, NY

Practice Areas Explained

William J. Keahon's Areas of Practice

Each practice area below reflects the types of cases William J. Keahon handles, with a brief overview of what that area of law covers.

DUI / DWI Defense

Find experienced DUI and DWI defense attorneys near you. Compare verified profiles, read client reviews, and consult about your case for free.

William J. Keahon is one of 29,976 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in New York →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

William J. Keahon is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in New York →

Traffic Violations

William J. Keahon is one of 14,506 traffic attorneys indexed nationally. Browse traffic attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Central Islip are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in Central Islip or all attorneys in New York.

Frequently Asked

Common questions about William J. Keahon

Where is William J. Keahon's law office located?
William J. Keahon's law practice is located in Central Islip, New York. You can contact the office directly through this profile page.
What practice areas does William J. Keahon handle?
William J. Keahon focuses on dui/dwi, criminal defense, traffic. Each practice area listed reflects experience handling cases of that type in New York.
How long has William J. Keahon practiced law?
William J. Keahon has 54+ years of legal experience and has been licensed since 1972.
Where did William J. Keahon go to law school?
William J. Keahon earned their education at (—).
How can I contact William J. Keahon for a consultation?
You can contact William J. Keahon 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.

Education

St. John's University J.D.
- In Progress

Bar Admissions

New York
Admitted: 1972
U.S. District Court, Eastern and Southern Districts of New York
Admitted: 1972

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