John M. Simpson

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Frank J. Pergolizzi is a top attorney recognized by Best Lawyers in the practice area(s) of Transportation Law. Frank J., 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 Frank J. is held by other top lawyers in the same geographic and legal practice area.

John H. LeSeur is a top attorney recognized by Best Lawyers in the practice area(s) of Railroad Law and Transportation Law. John H., who practices law in Washington, District of Columbia, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John H. is held by other top lawyers in the same geographic and legal practice area.

Jonathan P. Trotta is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Jonathan P., 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 Jonathan P. is held by other top lawyers in the same geographic and legal practice area.

Lita Rosario-Richardson is a top attorney recognized by Best Lawyers in the practice area(s) of Copyright Law. Lita, who practices law in Potomac, Maryland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lita is held by other top lawyers in the same geographic and legal practice area.

Diara M. Holmes serves as co-chair of the firm's Tax-Exempt Organizations Practice. She counsels tax-exempt organizations, including large public charities; colleges, universities and other higher education organizations; foreign charities and their U.S. affiliates; associations; government instrumentalities; social welfare organizations; and religious organizations on a broad range of tax compliance and governance issues. She advises nonprofit and for-profit organizations on structuring a va...

Stuart Berman is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice, Commercial Litigation, Criminal Defense: General Practice and Criminal Defense: White-Collar. Stuart, who practices law in Bethesda, Maryland, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stuart is held by other top lawyers in the same geographic and legal practice area.

Recognizing that many people meet Heather Mehigan during times of significant personal and family turmoil, her legal insight and sincerity puts them at ease. A tireless advocate for her clients, she assesses the circumstances of each matter and then works collaboratively with all parties to affect the best possible resolution. Heather instills a sense of confidence in her clients, and opposing counsel respect her fair and firm efforts to achieve consensus. Her areas of focus include fiduciary...

Wm. Quinton Robinson is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships), Closely Held Companies and Family Businesses Law, Corporate Compliance Law and Corporate Law. Wm. Quinton, who practices law in Fairfax, Virginia, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Wm. Quinton is held by other top lawyers in the same geographic and ...

Matthew J. Malinowski is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants. Matthew J., 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 Matthew J. is held by other top lawyers in the same geographic and legal practice area.