Atty. John Alexander O'Callaghan

Atty. John Alexander O'Callaghan

John Alexander O'Callaghan is a lawyer. John received a B.A. degree from Johns Hopkins University in 2001, and has been licensed for 17 years.

New York New York 17 yrs experience 17 year
Call (747) 400-1329 Book Appointment

Profile Summary

About John Alexander O'Callaghan at a glance

John Alexander O'Callaghan is an Associate based in New York, New York, practicing at Davis Polk & Wardwell LLP. They have 17+ years of legal experience, licensed to practice since 2009. Admitted to practice in New York Connecticut (2009). Educated at Brooklyn Law School (J.D., 2007) and Johns Hopkins University (B.A. Chemistry, 2001). Serands clients in New York, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Alexander O'Callaghan is a lawyer
  • John received a B.A. degree from Johns Hopkins University in 2001, and has been licensed for 17 years
  • John practices at Davis Polk & Wardwell LLP in New York, 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 New York 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 New York or all attorneys in New York.

Frequently Asked

Common questions about John Alexander O'Callaghan

Where is John Alexander O'Callaghan's law office located?
John Alexander O'Callaghan's law practice is located in New York, New York. The firm is Davis Polk & Wardwell LLP. You can contact the office directly through this profile page.
How long has John Alexander O'Callaghan practiced law?
John Alexander O'Callaghan has 17+ years of legal experience and has been licensed since 2009.
Where did John Alexander O'Callaghan go to law school?
John Alexander O'Callaghan earned their education at (J.D., 2007); (B.A. Chemistry, 2001).
How can I contact John Alexander O'Callaghan for a consultation?
You can contact John Alexander O'Callaghan 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.
Brooklyn Law School
- 2007
B.A. Chemistry
Johns Hopkins University
- 2001

Bar Admissions

New York Connecticut
Admitted: 2009

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