Atty. Luke J. O'Brien

Atty. Luke J. O'Brien

Luke J. O'Brien is a lawyer practicing criminal and regulatory defense, healthcare law and licensing, litigation and 2 other areas of law.

Newark Newark 9 yrs experience 9 year
Call (862) 418-2970 Book Appointment

Profile Summary

About Luke J. O'Brien at a glance

Luke J. O'Brien is a Counsel based in Newark, New Jersey, practicing at Calcagni & Kanefsky, LLP. They have 9+ years of legal experience, licensed to practice since 2017. Their practice focuses on criminal defense, business, litigation, consumer, and health care. Admitted to practice in New York New Jersey (2017). Educated at Yale Law School J.D. Senior Editor, Yale Journal on Regulation (—) and Amherst College B.A. summa cum laude (—). Serands clients in Newark, NJ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Luke J. O'Brien is a lawyer practicing criminal and regulatory defense, healthcare law and licensing, litigation and 2 other areas of law
  • Luke received a B.A. degree from Amherst College, and has been licensed for 9 years
  • Luke practices at Calcagni & Kanefsky, LLP in Newark, NJ

Practice Areas Explained

Luke J. O'Brien's Areas of Practice

Each practice area below reflects the types of cases Luke J. O'Brien handles, with a brief overview of what that area of law covers.

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.

Luke J. O'Brien is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in New Jersey →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Luke J. O'Brien is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New Jersey →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Luke J. O'Brien is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New Jersey →

Consumer Protection

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

Luke J. O'Brien is one of 50,607 consumer attorneys indexed nationally. Browse consumer attorneys in New Jersey →

Health Care Law

Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.

Luke J. O'Brien is one of 66,735 health care attorneys indexed nationally. Browse health care attorneys in New Jersey →

Jurisdictional Context

Why local counsel matters in New Jersey

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

Looking for additional New Jersey attorneys? Browse all attorneys in Newark or all attorneys in New Jersey.

Frequently Asked

Common questions about Luke J. O'Brien

Where is Luke J. O'Brien's law office located?
Luke J. O'Brien's law practice is located in Newark, New Jersey. The firm is Calcagni & Kanefsky, LLP. You can contact the office directly through this profile page.
What practice areas does Luke J. O'Brien handle?
Luke J. O'Brien focuses on criminal defense, business, litigation, consumer, health care. Each practice area listed reflects experience handling cases of that type in New Jersey.
How long has Luke J. O'Brien practiced law?
Luke J. O'Brien has 9+ years of legal experience and has been licensed since 2017.
Where did Luke J. O'Brien go to law school?
Luke J. O'Brien earned their education at (—); (—).
How can I contact Luke J. O'Brien for a consultation?
You can contact Luke J. O'Brien 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

Yale Law School J.D. Senior Editor, Yale Journal on Regulation
- In Progress
Amherst College B.A. summa cum laude
- In Progress

Bar Admissions

New York New Jersey
Admitted: 2017

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