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

1,056 Profile Views

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Velma Okuneva

Jan 28, 2026

Really helpful and compassionate service from everyone at Margaret H. "Peg" Warner's firm

Everyone at Margaret H. "Peg" Warner's office in Washington was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I neve...

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Florence Jerde

Jan 28, 2026

Simply amazing representation from Margaret H. "Peg" Warner's office during my recent legal matter

I was really stressed about my case in Washington, but Margaret H. "Peg" Warner made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled e...

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Valerie Strosin

Jan 28, 2026

Highly recommend Margaret H. "Peg" Warner for anyone needing expert Commercial Litigation law help in District of Columbia

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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Josh Pfeffer

Jan 28, 2026

Exactly what I needed after my legal issue in Washington - Margaret H. "Peg" Warner was a lifesaver

Going through a Commercial Litigation law dispute is something I wouldn't wish on anyone, but having Margaret H. "Peg" Warner by my side made it manageable. I was worried about the cost and the time i...

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Sammy Schaden-Heidenreich

Jan 28, 2026

Highly recommend Margaret H. "Peg" Warner for anyone needing expert Commercial Litigation law help in District of Columbia

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...