Richard "Rip" Sullivan, Jr.

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...

Chris graduated from Falls Church High School in 1988, Georgetown University in 1992, and William and Mary law School in 1996. He also attended the George Washington University Master’s Program in Forensic Science from 2001-2003. During law school, Chris concentrated in criminal defense by working as an investigator at the D.C. Public Defender Service. He also clerked at the Public Defender’s Office in Bellingham, Washington in the summer of 1995, where he won his first jury trial...

Anne E. Grover is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law, Family Law Arbitration and Family Law Mediation. Anne E., who practices law in Rockville, Maryland, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Anne E. is held by other top lawyers in the same geographic and legal practice area.

David P. Wales is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. David P., who practices law in Washington, District of Columbia, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David P. is held by other top lawyers in the same geographic and legal practice area.

David W. Bowker is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice. David W., 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 David W. is held by other top lawyers in the same geographic and legal practice area.

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

Elizabeth Quinn is a recognized authority on business immigration matters and the unique problems of J-1 exchange visitors. Among her clients are hospitality and biotechnology companies, artists and musicians, and those working in the human rights field. She also handles family-based immigration matters, naturalization, and waivers of inadmissibility. Elizabeth has written and lectured on a wide-range of immigration issues, including the various visa options for international medical graduate...

Kevin A. Ewing is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Environmental Law. Kevin A., 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 Kevin A. is held by other top lawyers in the same geographic and legal practice area.

Nathan J. Muyskens is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Nathan J., 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 Nathan J. is held by other top lawyers in the same geographic and legal practice area.

Julia K. York is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Julia K., 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 Julia K. is held by other top lawyers in the same geographic and legal practice area.