Mark D. Polston

Ronald C. Machen is a top attorney recognized by Best Lawyers in the practice area(s) of Securities Regulation. Ronald C., 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 Ronald C. is held by other top lawyers in the same geographic and legal practice area.

Emily J.H. Daniels is a top attorney recognized by Best Lawyers in the practice area(s) of Communications Law. Emily J.H., 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 Emily J.H. is held by other top lawyers in the same geographic and legal practice area.

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

Patricia Harris is a land use attorney at Lerch, Early & Brewer in Bethesda, Maryland. She assists developers and property owners with securing approvals needed to develop their properties, including site plans, special exceptions, subdivision approvals, historic preservation, local map amendments, zoning text amendments, master plan recommendations and building permits in Montgomery County, Maryland. Pat is knowledgeable about transit-oriented, mixed-use development and other issues rela...

Steven A. Sigsbury specializes in tax and estate planning, estate and trust administration, fiduciary responsibility, and business and real estate planning. Steven’s laid-back personality allows him to relate to clients and instill a sense of trustworthiness at the outset of any engagement. Steven analyzes and simplifies complex problems and offers clients individualized solutions. As a tax and estate planner, Steven works with clients to develop tax-efficient estate plans that accompli...

For more information, please visit www.gibsondunn.com/lawyer/dupree-jr-thomas-h/ .

Jason C. Chipman is a top attorney recognized by Best Lawyers in the practice area(s) of Privacy and Data Security Law. Jason C., 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 Jason C. is held by other top lawyers in the same geographic and legal practice area.

Philip Baker-Shenk is a partner in our firm's Indian Law Practice Group and our Entertainment Law Practice Group. He provides legal and policy representation to dozens of Native American Indian Tribal governments as well as Tribal organizations and companies doing business with Indian Tribes. Mr. Baker-Shenk began working on behalf of Indian Tribes in our Nation's capital in 1976. For half a decade, he served as staff in the U.S. Senate, including two years as Majority General Counsel to Indi...

Harold J. Ashner is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Harold J., who practices law in Washington, District of Columbia, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Harold J. is held by other top lawyers in the same geographic and legal practice area.

An expert on ERISA’s fiduciary rules and government regulation of health insurance, including the Affordable Care Act (ACA), Jon Breyfogle counsels numerous financial services firms, health insurers, and their D.C.-based trade associations on retirement and health matters. His practice includes advice on regulatory and legislative strategies, compliance, and defense of federal and state investigations. Jon has testified before Congress and at Department of Labor hearings on both retirem...