Lucas M. Fields

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...

Michael Lazarus advises domestic and international clients in the telecommunications industry on transactional and regulatory matters and represents them before the Federal Communications Commission (the FCC) and state and local regulatory bodies. He represents mobile and fixed service providers of broadband and narrowband services delivered over landline and cable networks, terrestrial wireless systems, satellites and the Internet. His experience includes: FCC regulations applicable to wirel...

Sarah Moore Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Sarah Moore, who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sarah Moore is held by other top lawyers in the same geographic and legal practice area.

Elaine C. Greenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Securities and Securities Regulation. Elaine C., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elaine C. is held by other top lawyers in the same geographic and legal practice area.

John Sandweg is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. John, 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 John is held by other top lawyers in the same geographic and legal practice area.

Leon Fresco is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Leon, who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Leon is held by other top lawyers in the same geographic and legal practice area.

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

Linda Singer represents governments, attorneys general and other public entities in high-impact, high-stakes litigation and investigations as head of the firm’s Public Client practice area. The former Attorney General of the District of Columbia, Linda’s knowledge and experience includes serving in the public, not-for-profit and private sectors. As AG, Linda gained invaluable insight into the duties of attorneys general and how law firms with the right resources and experience can...

Sam Spiritos’ clients recognize him as a sophisticated transactional attorney, trusted business advisor and an effective negotiator who truly understands their business needs. Over the course of his thirty-plus year career of successful deal-making, Sam has developed not only a masterful legal ability, but also strong relationships with many key players in the real estate markets in DC, Maryland, Northern Virginia and throughout the country. He draws upon this experience (which includes...

Michael S. McFalls is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Michael S., who practices law in Washington, District of Columbia, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael S. is held by other top lawyers in the same geographic and legal practice area.