Margaret H. "Peg" Warner

Margaret H. "Peg" Warner

Commercial Litigation Insurance Law Litigation - Insurance
Recognized in Best Attorney USA since 2008

About Margaret

Margaret H. "Peg" Warner: Experienced Litigation Attorney in Washington, D.C.

Peg Warner is a distinguished litigation attorney with extensive experience spanning over 30 jurisdictions across state and federal courts. Her legal career has encompassed a broad spectrum of practice areas including antitrust, commercial, class action, environmental, healthcare, insurance, mass tort, product liability, and reinsurance disputes.

Practice Areas

  • Commercial Litigation
  • Insurance Law
  • Litigation - Insurance

Peg Warner has successfully taken numerous cases to verdict or judgment before juries, judges, and arbitration tribunals. Many of her notable cases have involved high-profile public policy issues such as Agent Orange litigation from the 1980s, environmental and Superfund litigation concerning sites like Love Canal and the Hudson River in the 1990s, as well as recent controversies including sexual abuse, 9/11, antitrust, healthcare, ERISA, and COVID-19 cases.

Education & Credentials

  • B.S., Environmental Science, University of Notre Dame, 1985
  • J.D., Georgetown University Law Center, 1990

Peg Warner is admitted to practice in the United States. She has been recognized as a 'Recognized Attorney' by Best Attorney USA since 2008. Her distinguished career includes service at McDermott Will & Schulte.

Affiliations

  • McDermott Will & Schulte, Current Firm

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Reviews

4.6 / 5

39 Reviews

1,055 Profile Views

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Gladys Bogan

Jan 28, 2026

Reliable lawyer you can count on - Margaret H. "Peg" Warner provided excellent service throughout

It's hard finding a reliable lawyer these days, but Margaret H. "Peg" Warner in Washington is definitely one of the good ones. Would use them again if needed without hesitation. They are professional,...

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Vickie Harvey

Jan 28, 2026

Great people who truly care at Margaret H. "Peg" Warner - the best legal team in District of Columbia

I've already told all my friends and family about Margaret H. "Peg" Warner. If you need Commercial Litigation law help in District of Columbia, they're the ones to see without any doubt. They are loca...

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Milton Brekke-Gibson

Jan 28, 2026

Outstanding experience with Margaret H. "Peg" Warner in Washington - truly the best legal team

I didn't think I'd find such a good lawyer in District of Columbia, but here we are and I am thoroughly impressed. Margaret H. "Peg" Warner is just awesome and exceeded all my expectations. No complai...

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Jean Morissette

Jan 28, 2026

Great people who truly care at Margaret H. "Peg" Warner - the best legal team in District of Columbia

Margaret H. "Peg" Warner has been doing this since Recognized in Best Lawyers since 2008, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with...

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Muriel Ledner

Jan 28, 2026

Excellent legal representation provided by Margaret H. "Peg" Warner for my Commercial Litigation law case

If you need a Commercial Litigation law lawyer, Margaret H. "Peg" Warner is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of...