Mark A. Wagner

Samuel Rosenthal is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Samuel, who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Samuel is held by other top lawyers in the same geographic and legal practice area.

Benjamin Kinder is a top attorney recognized by Best Lawyers in the practice area(s) of Nonprofit / Charities Law. Benjamin, who practices law in Reston, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Benjamin is held by other top lawyers in the same geographic and legal practice area.

Henry Asbill is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Criminal Defense: General Practice and Criminal Defense: White-Collar. Henry, who practices law in Washington, District of Columbia, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Henry is held by other top lawyers in the same geographic and legal practice area.

Personal injury and medical malpractice victims, and those who have been injured by the federal government, turn to Karl Protil when they need a lawyer who has a 20 year record of winning such cases. Clients depend on Karl when the stakes are high, and when their situations call for a lawyer who is not afraid to take chances when it comes to bringing the much needed emotional and financial closure they deserve. Victims benefit from his unique technical skill-set which includes both deep knowl...

Nancy N. Delogu is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Nancy N., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nancy N. is held by other top lawyers in the same geographic and legal practice area.

Gregory H. Koger is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Litigation - Construction. Gregory H., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Gregory H. is held by other top lawyers in the same geographic and legal practice area.

Nathaniel Edmonds serves as the Co-Chair of the firm’s litigation practice in Washington, D.C., which houses over 100 lawyers handling a variety of litigation matters, including internal corporate investigations, white collar criminal defense, anti-corruption compliance, sanctions and export controls, data privacy and cyber security, intellectual property and patent litigation, international arbitration, and antitrust counseling. Mr. Edmonds focuses on global internal investigations, in...

Patrick F. Stokes is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Patrick F., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick F. is held by other top lawyers in the same geographic and legal practice area.

Marisa C. Terrenzi is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Marisa C., who practices law in Tysons, Virginia, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marisa C. is held by other top lawyers in the same geographic and legal practice area.

Louis Mazawey brings decades of experience as an authority on the tax aspects of employee benefits in all forms to his work at Groom. As counsel to major insurance companies and a variety of plan sponsors—including corporate employers, trade associations, and public retirement systems—Lou has worked closely with qualified plans, 403(b) and 457 plans, IRAs, employee stock ownership plans, executive compensation, retiree medical benefits, plan terminations, mergers and spinoffs, the...