Gregory A. "Greg" Castanias

Joseph Guarino handles dispute resolution in the construction sector, including major claims relating to the development of energy facilities, hotel complexes and commercial buildings. His experience includes all aspects of contract drafting and negotiations, counseling on contract administration, claim preservation and avoidance, and dispute resolution and litigation within the construction industry. Joe's broad experience includes tunnels, power plants, high-rise buildings, hospitals, deten...

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Matthew Kapuscinski is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: General Practice. Matthew, who practices law in Reston, Virginia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew is held by other top lawyers in the same geographic and legal practice area.

Steve Briglia has extensive trial experience in both civil and criminal law matters. He has tried cases before judges and juries in both state and federal court. He has also served as counsel in administrative hearings and arbitrations. Mr. Briglia’s clients range from national and regional businesses to individuals involved in business disputes and criminal investigations. Mr. Briglia is a founding member of BrigliaHundley. Mr. Briglia has served on numerous boards and commissions in h...

The resolution of family law issues impacts a person’s life, frequently affecting long term financial well-being and parental rights. It is important, therefore, to attain the best possible outcome. Robin B. Taub, a principal and founding member of Paradiso, Taub, Sinay, Owel, and Kostecka, P.C., has built her legal reputation upon this principle. She focuses her practice in Maryland and the District of Columbia on negotiation, mediation and collaboration. She believes these alternative...

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

RJ Hamilton is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. RJ, 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 RJ is held by other top lawyers in the same geographic and legal practice area.

Frederick (Rick) Stearns provides his clients with experience on a wide range of issues affecting makers of prescription and over-the-counter (OTC) drugs, medical devices, dietary supplements, cosmetics, food, and food ingredients. He is also deeply involved with the regulatory issues surrounding cannabis and hemp-based products, including cannabidiol (CBD) and related cannabinoids. Rick helps manufacturers evaluate the need for marketing approval from the U.S. Food and Drug Administration (F...

Adam Herzog, a partner of Katz Banks Kumin, joined the Firm in December 2013. Mr. Herzog has represented numerous clients pursuing whistleblower tips before the SEC, CFTC and FINCEN and has successfully assisted them in earning millions of dollars in award payments. Three of Mr. Herzog’s clients received SEC whistleblower awards in the second half of 2023 alone, some of whom participated in a $104 million total award that was the fourth largest in the SEC program’s history. Detail...

Steve Weber is a Partner in Peckar & Abramson’s Washington D.C. office and Co-Chair of the firm’s Government Contracts practice. He has 35+ years of experience representing domestic and international contractors in a wide range of construction litigation and governmental contract matters in and outside the U.S. Steve has represented domestic and international construction contractors on power projects, high rise projects and major infrastructure projects, among others. His exp...