Mark S. Brown

Stephen J. Berman is a lawyer recognized by Best Lawyers in the practice area of Communications Law. Stephen J. practices law in Washington, District of Columbia Best Lawyers has recognized Stephen J. Berman since 2023. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Stephen J. Berman is held by other lawyers.

Though divorce can be one of life’s most distressing events, by building relationships, cultivating trust and creating solutions, Sarah Zimmerman helps clients achieve the best outcome possible while attempting to minimize the financial and emotional impact of divorce. Sarah excels in guiding clients through complex financial and custody issues, and serves a wide range of individuals including high-asset clients and working or stay-at-home spouses who are financially dependent. Sarah's ...

Christopher S. Rizek is a Member in Caplin & Drysdale's Washington, D.C., office. He also serves as General Counsel to the firm. In 2014, he was listed in the elite "Leading Lawyer" list for Tax Controversy by The Legal 500 . Services Mr. Rizek represents taxpayers in all types of federal civil and criminal tax controversy matters. He also guides clients through IRS audits, prepares administrative claims and protests of IRS actions, and litigates tax and tax-related cases in U.S. district...

P. Andrew Spicknall is a lawyer recognized by Best Lawyers in the practice area of Public Finance Law. P. Andrew practices law in Washington, District of Columbia Best Lawyers has recognized P. Andrew Spicknall since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which P. Andrew Spicknall is held by other lawyers.

David C. Kully is a lawyer recognized by Best Lawyers in the practice areas of Antitrust Law and Litigation - Antitrust. David C. practices law in Washington, District of Columbia Best Lawyers has recognized David C. Kully since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which David C. Kully is held by other lawyers.

Leon B. Greenfield has an exceptionally wide breadth of experience representing clients in complex antitrust-related matters. He has represented clients in cutting edge Section 2 litigation and agency matters. He has secured antitrust clearance for major acquisitions, litigated cases in federal and state court and counseled clients on many types of antitrust issues. Mr. Greenfield also has broad experience in matters outside the antitrust area, including securities regulatory matters and liti...

Saul Mezei is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Saul practices law in Washington, District of Columbia Best Lawyers has recognized Saul Mezei since 2023. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Saul Mezei is held by other lawyers.

Amy E. Totten approaches every case by carefully considering all perspectives involved. As a former prosecutor, she understands the importance of thorough preparation for trial and thoughtful analysis, particularly when clients are facing significant, life-changing circumstances. Her ability to anticipate opposing arguments allows her to develop practical strategies tailored to each client’s situation. Over more than two decades in legal practice, Amy has handled thousands of matters ra...

William Walsh is a lawyer recognized by Best Lawyers in the practice areas of Business Organizations (including LLCs and Partnerships), Closely Held Companies and Family Businesses Law and Corporate Law. William practices law in Fairfax, Virginia Best Lawyers has recognized William Walsh since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which William Wa...

Kirk Nahra has been a leading authority on privacy and cybersecurity matters for more than two decades. He co-chairs the firm’s Cybersecurity and Privacy Practice as well as the Artificial Intelligence Practice. In recognition of his professional work in these areas, he was named the winner of the 2021 Vanguard Award from the International Association of Privacy Professionals (IAPP)—one of the most prestigious in the privacy field—which recognizes one IAPP member each year w...