Atty. Peter Lawrence Mac Isaac

Atty. Peter Lawrence Mac Isaac

Peter L. MacIsaac is a Certified Civil Trial attorney and is recognized as one of the most accomplished plaintiff's catastrophic injury and medical malpractice trial lawyers in the state of New Jersey.

Roseland Roseland 25 yrs experience 25 year
Call (201) 809-6040 Book Appointment

Profile Summary

About Peter Lawrence Mac Isaac at a glance

Peter Lawrence Mac Isaac is a medical malpractice, personal injury, litigation, and civil rights attorney based in Roseland, New Jersey. They have 25+ years of legal experience, licensed to practice since 2001. Admitted to practice in New Jersey (2001) and New York (2017). Educated at Seton Hall University School of Law (JD, 2000). Provides legal services in Spanish. Serands clients in Roseland, NJ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Peter L. MacIsaac is a Certified Civil Trial attorney and is recognized as one of the most accomplished plaintiff's catastrophic injury and medical malpractice trial lawyers in the state of New Jersey
  • Peter represents clients in all types of personal injury matters including auto accidents, general negligence and dangerous premises liability
  • The eldest son of a corporate lawyer and a licensed clinical social worker (LCSW), Peter decided at a young age that he wanted to be a trial lawyer
  • Peter focuses his practice on representing patients and their families who have been harmed by preventable medical errors
  • Peter has successfully procured compensation for patients and their families who were injured as a result of negligent medical care
  • He has had primary responsibility for cases involving various fields of medicine including obstetrics
  • surgery
  • oncology
  • gastroenterology
  • cardiology
  • neurology
  • neurosurgery
  • emergency medicine
  • and infectious diseases, among others
  • Many of these patients have needlessly suffered wrongful death or been unfairly deprived of the opportunity to treat or cure their terminal illness
  • Several have ended up in a comatose like state or have been permanently inflicted with cerebral palsy or other forms of brain damage, as a result of medical error
  • Peter has tried several important cases through to verdict including medical malpractice matters involving wrongful death, auto and premises liability, estate commercial/contractual (fraudulent transfer) and real estate matters
  • He has also argued before the Appellate Division of the Superior Court of New Jersey
  • the Supreme Court of New Jersey
  • the United States District Court for the District of New Jersey
  • and the United States Court of Appeals for the Third Circuit
  • In 2010 and 2011, Peter was named a Rising Star® by New Jersey Super Lawyers® for his efforts representing victims of professional medical negligence
  • He has also been appointed to the New Jersey State Bar Association’s Special Committee on Medical Malpractice
  • In 2012 Peter was named one of the top 100 trial attorneys in the state of New Jersey by the National Trial Lawyers
  • In addition to representing patients damaged by medical negligence, Peter also represents victims of general negligence, including those injured by driver error, as well as dangerous premises and products
  • Peter also represents parties in commercial and chancery matters
  • In 2005, the United States Court of Appeals for the Third Circuit adopted Peter’s arguments for its precedent setting interpretation of the Computer Fraud and Abuse Act (“CFAA”)
  • See Party City v
  • Celebration, et al., 428 F. 3d 504, C.A.3 (N.J) (No. 04-4254)
  • Peter successfully defended an individual charged with computer hacking the business of a competitor to steal trade secrets
  • He argued this case before the Federal District Court for the State of New Jersey and the United States Court of Appeals for the Third Circuit
  • The Precedential Opinion is available on-line at
  • Peter worked directly under one of Chasan Leyner & Lamparello's founding members, Joel A. Leyner for several years after joining the firm and before assuming primary responsibility for the firm’s catastrophic injury and medical malpractice matters
  • Prior to that time, Peter had worked as a transactional attorney in commercial real estate matters and had handled the defense of various personal injury matters for ShopRite and other defendants
  • During his time as an associate, Peter had primary responsibility for discovery in the firm’s medical malpractice cases and was instrumental in the successful resolution of many cases, resulting in a large amount of multi-million dollar verdicts and settlements

Practice Areas Explained

Peter Lawrence Mac Isaac's Areas of Practice

Each practice area below reflects the types of cases Peter Lawrence Mac Isaac handles, with a brief overview of what that area of law covers.

Medical Malpractice

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

Peter Lawrence Mac Isaac is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in New Jersey →

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.

Peter Lawrence Mac Isaac is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in New Jersey →

Civil Litigation

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

Peter Lawrence Mac Isaac is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New Jersey →

Civil Rights

Civil rights attorneys for discrimination, police misconduct, constitutional rights, and civil liberties cases.

Peter Lawrence Mac Isaac is one of 70,245 civil rights attorneys indexed nationally. Browse civil rights 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 Roseland 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 Roseland or all attorneys in New Jersey.

Frequently Asked

Common questions about Peter Lawrence Mac Isaac

Where is Peter Lawrence Mac Isaac's law office located?
Peter Lawrence Mac Isaac's law practice is located in Roseland, New Jersey. You can contact the office directly through this profile page.
What practice areas does Peter Lawrence Mac Isaac handle?
Peter Lawrence Mac Isaac focuses on medical malpractice, personal injury, litigation, civil rights. Each practice area listed reflects experience handling cases of that type in New Jersey.
How long has Peter Lawrence Mac Isaac practiced law?
Peter Lawrence Mac Isaac has 25+ years of legal experience and has been licensed since 2001.
What languages does Peter Lawrence Mac Isaac speak?
Peter Lawrence Mac Isaac provides legal services in Spanish. Bilingual representation can be especially important when contracts, testimony, or court filings require accurate translation.
Where did Peter Lawrence Mac Isaac go to law school?
Peter Lawrence Mac Isaac earned their education at (JD, 2000).
How can I contact Peter Lawrence Mac Isaac for a consultation?
You can contact Peter Lawrence Mac Isaac 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

JD
Seton Hall University School of Law
- 2000

Languages

Bar Admissions

New Jersey
Admitted: 2001
New York
Admitted: 2017

Reviews

These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.