Atty. Matthew Mcdonnell Walsh

Atty. Matthew Mcdonnell Walsh

Matthew Mcdonnell Walsh is a lawyer practicing class action, antitrust / trade law, health care and 3 other areas of law. Matthew received a B.A. degree from University of Hawaii in 1990, and has been licensed for 32 years.

Los Angeles Los Angeles 32 yrs experience 32 year
Call (659) 204-2682 Book Appointment

Profile Summary

About Matthew Mcdonnell Walsh at a glance

Matthew Mcdonnell Walsh is a Partner based in Los Angeles, California, practicing at Winston & Strawn LLP. They have 32+ years of legal experience, licensed to practice since 1994. Their practice focuses on class action, m&a, litigation, health care, and adr. Admitted to practice in District of Columbia (2008) and New York (2009). Educated at University of Hawaii (B.A., 1990) and University of California, Hastings College of the Law J.D. magna cum laude University of California, Hastings College of the Law J.D. 1994 Order of the Coif (—). Active member of State Bar of California American Bar Association. Serands clients in Los Angeles, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Matthew Mcdonnell Walsh is a lawyer practicing class action, antitrust / trade law, health care and 3 other areas of law
  • Matthew received a B.A. degree from University of Hawaii in 1990, and has been licensed for 32 years
  • Matthew practices at Winston & Strawn LLP in Los Angeles, CA

Practice Areas Explained

Matthew Mcdonnell Walsh's Areas of Practice

Each practice area below reflects the types of cases Matthew Mcdonnell Walsh handles, with a brief overview of what that area of law covers.

Class Action

Matthew Mcdonnell Walsh is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in California →

Mergers & Acquisitions

Matthew Mcdonnell Walsh is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in California →

Civil Litigation

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

Matthew Mcdonnell Walsh is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Health Care Law

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

Matthew Mcdonnell Walsh is one of 66,735 health care attorneys indexed nationally. Browse health care attorneys in California →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Matthew Mcdonnell Walsh is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys in California →

Jurisdictional Context

Why local counsel matters in California

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

Looking for additional California attorneys? Browse all attorneys in Los Angeles or all attorneys in California.

Frequently Asked

Common questions about Matthew Mcdonnell Walsh

Where is Matthew Mcdonnell Walsh's law office located?
Matthew Mcdonnell Walsh's law practice is located in Los Angeles, California. The firm is Winston & Strawn LLP. You can contact the office directly through this profile page.
What practice areas does Matthew Mcdonnell Walsh handle?
Matthew Mcdonnell Walsh focuses on class action, m&a, litigation, health care, adr. Each practice area listed reflects experience handling cases of that type in California.
How long has Matthew Mcdonnell Walsh practiced law?
Matthew Mcdonnell Walsh has 32+ years of legal experience and has been licensed since 1994.
Where did Matthew Mcdonnell Walsh go to law school?
Matthew Mcdonnell Walsh earned their education at (B.A., 1990); (—).
How can I contact Matthew Mcdonnell Walsh for a consultation?
You can contact Matthew Mcdonnell Walsh 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

B.A.
University of Hawaii
- 1990
University of California, Hastings College of the Law J.D. magna cum laude University of California, Hastings College of the Law J.D. 1994 Order of the Coif
- In Progress

Bar Admissions

District of Columbia
Admitted: 2008
New York
Admitted: 2009

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