Atty. Mark L. O'Neill

Atty. Mark L. O'Neill

Mark L. O'Neill is a lawyer.

Staten Island Staten Island 41 yrs experience 41 year
Call (866) 398-7118 Book Appointment

Profile Summary

About Mark L. O'Neill at a glance

Mark L. O'Neill is an attorney based in Staten Island, New York. They have 41+ years of legal experience, licensed to practice since 1985. Admitted to practice in New Jersey (1985) and New York (1986). Educated at John Jay College Of Criminal Justice Of The City University Of New York (J.D., 1985) and Pace University (—). Serands clients in Staten Island, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark L. O'Neill is a lawyer
  • Mark L. received a degree from Pace University, and has been licensed for 41 years
  • Mark L. practices in Staten Island, NY

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 Staten Island 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 Staten Island or all attorneys in New York.

Frequently Asked

Common questions about Mark L. O'Neill

Where is Mark L. O'Neill's law office located?
Mark L. O'Neill's law practice is located in Staten Island, New York. You can contact the office directly through this profile page.
How long has Mark L. O'Neill practiced law?
Mark L. O'Neill has 41+ years of legal experience and has been licensed since 1985.
Where did Mark L. O'Neill go to law school?
Mark L. O'Neill earned their education at (J.D., 1985); (—).
How can I contact Mark L. O'Neill for a consultation?
You can contact Mark L. O'Neill 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

J.D.
John Jay College Of Criminal Justice Of The City University Of New York
- 1985
Pace University
- In Progress

Bar Admissions

New Jersey
Admitted: 1985
New York
Admitted: 1986

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