Guang-Yu Zhu

Jessica is the Managing Partner of Rock Creek Energy Group. Jessica’s practice is focused on renewable and conventional independent power producers, power marketers, and transmission developers throughout the United States. She represents owners, operators and investors of all sizes in the electric energy sector, from startup developers to private equity funds, infrastructure funds and institutional investors. ‍ Jessica specializes in federal energy regulatory matters related to: De...

Andrew Schwartz establishes trusting and communicative relationships with his clients, which helps him better understand their particular circumstances in order to achieve their desired goals. Andrew prides himself on being proactive, responsive and dedicated to each and every client. Andrew focuses his practice on commercial transactions, employment law, real estate, and successful business growth, management, operation, and succession. With his knowledge and wealth of experience in business...

Tania Klam is a cum laude graduate of George Mason University (B.A. in Government and International Politics with a minor in Legal Studies) and a graduate of the Penn State Dickinson School of Law (J.D. 2009). She is admitted to practice in Virginia, District of Columbia, New York, and Florida. She is fluent in Arabic and focuses her practice on Family Law. Ms. Klam began her legal career as a prosecutor in Brooklyn, New York where she served as an Assistant District Attorney. While there, sh...

Mark J. MacDougall is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Mark J., who practices law in Washington, District of Columbia, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark J. is held by other top lawyers in the same geographic and legal practice area.

Alison N. Davis represents management in employment and labor law. She has extensive litigation experience in the employment arena, including: Sexual harassment Race, national origin, age, gender and disability discrimination Overtime Wrongful termination claims Pay discrimination issues Wage and hour matters She regularly appears in state and federal courts and before the Equal Employment Opportunity Commission, the Maryland Commission on Human Relations, the District of Columbia Office of H...

Jonathan Phillips is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Qui Tam Law. Jonathan, 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 Jonathan is held by other top lawyers in the same geographic and legal practice area.

Allyson Mullen provides counsel to medical device and in vitro diagnostic (IVD) manufacturers. Ms. Mullen assists clients with a wide range of pre and postmarket regulatory topics including developing regulatory strategy, preparing regulatory submissions, drafting regulatory policies and procedures, reviewing advertising and promotional materials, and addressing enforcement matters. In the premarket area, Ms. Mullen develops regulatory strategy, including obtaining breakthrough device designa...

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...

James N. Mastracchio is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. James N., 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 James N. is held by other top lawyers in the same geographic and legal practice area.

Barry Boss is co-chair of Cozen O’Connor’s Criminal Defense & Internal Investigations practice group, vice chair of the Commercial Litigation Department and office managing partner of the D.C. office. Prior to joining Cozen O’Connor in April 2004, Barry was an assistant federal public defender in Washington, D.C. Barry focuses his practice on complex criminal matters, particularly involving allegations of white-collar crime in federal court. Barry has extensive jury tria...