Handling cases nationwide from Washington D.C.
The Washington, D.C. office of Chapman, Dowling & Mallek serves clients nationwide who are facing federal criminal investigations, enforcement actions, and complex regulatory matters. Located at the center of federal power, our D.C. office is uniquely positioned to represent individuals and organizations involved in matters overseen by federal prosecutors, inspectors general, and regulatory agencies.
Our attorneys have extensive experience handling white collar criminal defense, healthcare fraud, and federal investigations that originate in Washington or are coordinated across multiple jurisdictions. We regularly represent professionals, executives, and companies responding to subpoenas, grand jury investigations, and government inquiries before charges are filed.
Clients rely on our Washington, D.C. office for sophisticated federal defense strategies, informed by a deep understanding of how federal agencies investigate, charge, and litigate high-stakes cases.

Washington D.C. Office
Washington D.C., 20006
1629 K Street NW, Suite 300
Phone: 346-242-7626
Office Hours:
Monday – Friday
8:30am – 6pm
Chapman, Dowling & Mallek represents clients in all federal criminal, white-collar, and agency-investigation matters originating in Washington, D.C.
Countless Quiet Resolutions
188 Federal Acquittals
Federal cases successfully defended — often before any public filing or charge.
United States v. N.
Conviction vacated post‑Ruan for reconsideration of mens rea under CSA §841.
Washington D.C. U.S. Supreme Court Vacated & Remanded
United States v. E. H.
Five individuals, including E. H. acquitted after trial; corporate entities convicted.
W.D. Pa. Acquittal
Ron’s meticulous approach, combined with a relentless commitment to his clients, has led to precedent-setting victories that have reshaped federal healthcare fraud and white-collar criminal defense.
Record-setting trial victories in high-stakes federal cases have earned Ron national recognition among peers and clients alike. His results in complex white collar investigations demonstrate strategic mastery and courtroom precision. Learn more about Ronald Chapman II
Frequently featured on national media, Ron is a respected voice breaking down high-profile federal cases. His insight and clarity have made him a trusted analyst for complex legal and policy issues. See Ronald in the Media
Ron is the author of two acclaimed books on federal defense and investigations — essential reading for attorneys and professionals navigating the federal justice system. Explore Ronald's Books
Federal cases in Washington, D.C. move fast, involve aggressive agencies, and often carry political or regulatory complexities unique to the capital. Clients throughout D.C. rely on Chapman, Dowling & Mallek because every element of our work is designed to protect their freedom, career, and future.
1Deep Experience and Proven Results in D.C.
You get a defense strategy informed by extensive real-world federal outcomes, giving you a more powerful position in a highly federalized jurisdiction like Washington, D.C.
2 Focus on Federal & White Collar Defense
You receive representation from attorneys fully immersed in federal criminal law and D.C. based federal enforcement—critical when facing agencies such as DOJ, FBI, IRS-CI, HHS-OIG, SEC.3 Inside Perspective of Former Prosecutors
You get insight into how federal cases are built inside the very agencies operating in D.C., giving you an early advantage in investigations, negotiations, and trial preparation.
4 Free, Immediate, Private, Guidance
Call or visit our Washington, D.C. office. You get clarity, direction, and a plan without delay critical when federal agents are already moving.
Speak directly with a federal attorney — available 24/7 for calls or texts.