Atty. John A. Kiernan

Atty. John A. Kiernan

Mr. John A.

Boston Boston 52 yrs experience 52 year
Call (857) 347-3865 Book Appointment

Profile Summary

About John A. Kiernan at a glance

John A. Kiernan is a Partner based in Boston, Massachusetts, practicing at Kiernan Trebach LLP. They have 52+ years of legal experience, licensed to practice since 1974. Their practice focuses on formation, medical malpractice, personal injury, criminal defense, and employment. Admitted to practice in Massachusetts (1974), U.S. District Court, District of Massachusetts and U.S. Court of Appeals, First Circuit (1976), and District of Columbia (1998). Educated at Boston University (J.D., 1974) and Harvard University (B.A., 1970). Recognitions include AV Preeminent. Active member of Massachusetts Bar Association Federal Bar Association Massachusetts District Attorneys Association National District Attorneys Association Defense Research Institute. Serands clients in Boston, MA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. John A. Kiernan is a lawyer practicing business, corporate & incorporation, constitutional and 15 other areas of law
  • John received a B.A. degree from Harvard University in 1970, and has been licensed for 52 years
  • John practices at Kiernan Trebach LLP in Boston, MA

Practice Areas Explained

John A. Kiernan's Areas of Practice

Each practice area below reflects the types of cases John A. Kiernan handles, with a brief overview of what that area of law covers.

Business Formation

John A. Kiernan is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Massachusetts →

Medical Malpractice

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

John A. Kiernan is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Massachusetts →

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.

John A. Kiernan is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Massachusetts →

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.

John A. Kiernan is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Massachusetts →

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

John A. Kiernan is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Massachusetts →

Jurisdictional Context

Why local counsel matters in Massachusetts

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

Looking for additional Massachusetts attorneys? Browse all attorneys in Boston or all attorneys in Massachusetts.

Frequently Asked

Common questions about John A. Kiernan

Where is John A. Kiernan's law office located?
John A. Kiernan's law practice is located in Boston, Massachusetts. The firm is Kiernan Trebach LLP. You can contact the office directly through this profile page.
What practice areas does John A. Kiernan handle?
John A. Kiernan focuses on formation, medical malpractice, personal injury, criminal defense, employment. Each practice area listed reflects experience handling cases of that type in Massachusetts.
How long has John A. Kiernan practiced law?
John A. Kiernan has 52+ years of legal experience and has been licensed since 1974.
Where did John A. Kiernan go to law school?
John A. Kiernan earned their education at (J.D., 1974); (B.A., 1970).
How can I contact John A. Kiernan for a consultation?
You can contact John A. Kiernan 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.
What awards or recognition has John A. Kiernan received?
John A. Kiernan's notable recognition includes: AV Preeminent.

Education

J.D.
Boston University
- 1974
B.A.
Harvard University
- 1970

Awards

AV Preeminent

Bar Admissions

Massachusetts
Admitted: 1974
U.S. District Court, District of Massachusetts and U.S. Court of Appeals, First Circuit
Admitted: 1976
District of Columbia
Admitted: 1998

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