Kevin Grierson

Biz is a leader in the field of criminal defense and internal investigations focusing on white-collar defense and health care cases. Biz regularly represents clients in congressional and criminal fraud investigations as well as qui tam, Foreign Corrupt Practices Act (FCPA), False Claims Act (FCA), civil RICO, and employment litigation. She has counseled clients — including boards, audit committees, and management — on the development and implementation of internal compliance and e...

Aen Walker Webster dedicates her practice to estate planning and administration. She counsels clients on estate planning matters including charitable planning and business succession planning and advises fiduciaries on the administration of estates and trusts. Aen works frequently with individuals and families to maintain family assets and family harmony across generations. Aen draws on a multi-disciplinary background and her years of counseling clients to identify and bring solutions for com...

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

Christopher R. Wall is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law. Christopher R., 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 Christopher R. is held by other top lawyers in the same geographic and legal practice area.

Larry Gage is a senior counsel in the firm’s Washington, D.C. office whose practice is focused primarily on public sector and nonprofit health law and policy. In 1981, Larry founded the National Association of Public Hospitals and Health Systems (NAPH)(an organization now known as America’s Essential Hospitals). He served as president of that organization for over 30 years, developing and achieving enactment of Medicare and Medicaid reimbursement reforms that are the economic life...

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...

Adrian L. Bastianelli, III is Of Counsel at Peckar & Abramson PC , based in Washington, District of Columbia. Following a lengthy career representing participants across the construction industry in claims and litigation, while also serving as an ADR neutral, he has transitioned his practice to focus exclusively on neutral services. His work includes serving as an arbitrator, mediator, dispute review board (DRB) member, and in other roles involving arbitration and mediation. Adrian previo...

Prudence Avery Upton is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Prudence Avery, who practices law in Rockville, Maryland, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Prudence Avery is held by other top lawyers in the same geographic and legal practice area.

Matt Reilly is a partner in the Washington, D.C., office of Kirkland & Ellis LLP. Matt’s practice focuses on a wide range of antitrust matters, including antitrust litigation, complex transactions and antitrust counseling and government investigations. Matt is frequently relied upon to obtain regulatory clearance for many of the toughest, high profile deals. Matt is a former assistant director of the Federal Trade Commission (FTC), Bureau of Competition. In this role, he served for ...

Robert B. Robbins is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Securities / Capital Markets Law. Robert B., 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 Robert B. is held by other top lawyers in the same geographic and legal practice area.