Daniel Szieber

For more information, please visit www.gibsondunn.com/lawyer/harrison-Donald/ .

Mr. Scheineson is a partner in the Washington, D.C., office, where he heads the firm’s Food and Drug Law Practice. He advises companies on a wide range of issues, including product approvals, marketing, clinical studies and enforcement. Previously, he served as the associate commissioner for legislative affairs of the Food and Drug Administration. He was involved there in many agency innovations, including prescription drug user fees, debarment, medical device amendments and nutritional...

John R. Woodrum is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. John R., who practices law in Washington, District of Columbia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John R. is held by other top lawyers in the same geographic and legal practice area.

Michael Whalen is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Michael, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Ken Silverberg is an experienced tax attorney and former CPA-partner at Arthur Andersen & Co. He focuses on tax controversies, including tax audits, appeals and litigation against the IRS and state departments of taxation. He also represents numerous nonprofit organizations and NGOs in the health care, education and trade association sectors. What do you focus on? Tax Controversy Practice I help clients resolve their IRS and state tax problems as quickly and inexpensively as possible. Mos...

Jonathan Straw is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. Jonathan, who practices law in McLean, Virginia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonathan is held by other top lawyers in the same geographic and legal practice area.

Ellen Sharpe is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Ellen, who practices law in Reston, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ellen is held by other top lawyers in the same geographic and legal practice area.

Sondra Douglas is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Family Law Mediation. Sondra, who practices law in Rockville, Maryland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sondra is held by other top lawyers in the same geographic and legal practice area.

A former federal prosecutor with extensive trial and appellate experience, Greg Marshall represents companies and individuals defending government enforcement, white-collar criminal, and civil litigation matters. Greg also conducts internal investigations and advises clients on compliance issues. He has assisted clients in the financial services, healthcare, government contracting, technology, export, and education sectors. Greg has defended investigations and cases involving the False Claims...

With a distinctive background and a rare competitive fire, David Roop has for more than a decade been one of Virginia's top family law attorneys. According to his peers, Roop is both a sophisticated thinker and a scrappy lawyer, a unique and useful mix for his contentious profession. David has a deeply strategic orientation along with a cheerful yet hard-driving disposition. David is a Baltimore native and graduate of Notre Dame University, Notre Dame, Indiana (BA, cum laude, 1985) and the Un...