John D. Whittington

Debra D. Roby is an accomplished attorney at Washington Energy Law LLP, located in Washington, District of Columbia. With over two decades of experience, she represents a diverse range of stakeholders in the electric industry. She frequently appears before the Federal Energy Regulatory Commission (FERC) on matters such as transmission and energy market tariff and rate filings, merger proceedings, rulemakings, and hydroelectric licensing and compliance. Beyond her work with FERC, she provides ...

Adam H. Greene is a lawyer recognized by Best Lawyers in the practice areas of Health Care Law and Privacy and Data Security Law. Adam H. practices law in Washington, District of Columbia Best Lawyers has recognized Adam H. Greene since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Adam H. Greene is held by other lawyers.

Melissa C. Lesmes is a lawyer recognized by Best Lawyers in the practice areas of Construction Law and Litigation - Construction. Melissa C. practices law in Washington, District of Columbia Best Lawyers has recognized Melissa C. Lesmes since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Melissa C. Lesmes is held by other lawyers.

Scott works to design a creative, optimized path to problem solving that enhances their chances of recovery. Effective, thorough and practical, Scott is valued by clients and colleagues alike for his depth and breadth of knowledge and experience in insurance law, and for finding the right solution to each client’s distinct problem.Scott served co-lead counsel in a landmark class action trial, the first case of its kind to determine that insurance coverage was available, without aggregat...

James N. Mastracchio is a lawyer recognized by Best Lawyers in the practice area of Tax Law. James N. practices law in Washington, District of Columbia Best Lawyers has recognized James N. Mastracchio since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which James N. Mastracchio is held by other lawyers.

Brian Ashin is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Brian practices law in Washington, District of Columbia Best Lawyers has recognized Brian Ashin since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Brian Ashin is held by other lawyers.

David Brown is co-chair of the firm’s corporate practice area, which includes its corporate, energy, finance, health care, real estate and public policy groups, and a partner in the Financial Services & Products Group, which he previously led. His practice focuses on mergers and acquisitions, corporate governance, securities disclosure, and payment system and other technology transactions, with an emphasis on the financial services, technology and telecommunications industries. Davi...

Douglas J. Sanderson is a lawyer recognized by Best Lawyers in the practice areas of Collaborative Law: Family Law, Family Law and Real Estate Law. Douglas J. practices law in Fairfax, Virginia Best Lawyers has recognized Douglas J. Sanderson since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Douglas J. Sanderson is held by other lawyers.

Leon B. Greenfield has an exceptionally wide breadth of experience representing clients in complex antitrust-related matters. He has represented clients in cutting edge Section 2 litigation and agency matters. He has secured antitrust clearance for major acquisitions, litigated cases in federal and state court and counseled clients on many types of antitrust issues. Mr. Greenfield also has broad experience in matters outside the antitrust area, including securities regulatory matters and liti...

Gary B. Mims has practiced law since 1980. He was a defense litigator for 20 years, defending a heavy schedule of trials involving automobile, trucking, train and other transportation accidents and a wide variety of personal injury cases. He developed a special interest and significant experience in medical malpractice, first from the defense side, and since 1999, as a plaintiff's attorney. He has successfully represented clients in complicated medical cases involving, among other things, fai...