Washington D.C. Office

Chapman, Dowling & Mallek Federal Criminal Defense Attorneys Washington D.C.

Washington D.C. Office

Chapman, Dowling & Mallek Washington D.C. Office

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.


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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

Where We Handle Federal Matters in Washington, D.C.

Chapman, Dowling & Mallek represents clients in all federal criminal, white-collar, and agency-investigation matters originating in Washington, D.C.

Federal Courts in Washington, D.C.
  • U.S. District Court for the District of Columbia
  • U.S. Court of Appeals for the D.C. Circuit
  • Federal courthouse located in Judiciary Square
Federal Agencies Based in Washington, D.C.
  • Department of Justice (DOJ)
  • Federal Bureau of Investigation (FBI)
  • Securities and Exchange Commission (SEC)
  • Internal Revenue Service – Criminal Investigations (IRS-CI)
  • U.S. Department of Health & Human Services – OIG
  • FinCEN & Treasury Agencies
Federal Cases Originating From Washington, D.C.
  • Federal investigations initiated by D.C.-based agencies
  • Multi-state cases involving Washington, D.C. headquarters
  • Grand jury proceedings held in Washington, D.C.
  • National healthcare fraud investigations linked to D.C.
  • Securities and investment cases involving SEC headquarters
  • Federal white-collar matters with ties to D.C. agencies
  • Representation in federal courts nationwide when connected to D.C.

Federal Criminal Defense Case Results


Countless Quiet Resolutions

188 Federal Acquittals

Federal cases successfully defended — often before any public filing or charge.

Federal case result reversal

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

Federal case result acquittal

United States v. E. H.

Five individuals, including E. H. acquitted after trial; corporate entities convicted.

W.D. Pa. Acquittal

Led By Federal Defense Attorney Ronald Chapman II

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.

Leading White Collar & Federal Defense Attorney

Leading White Collar & Federal Defense Attorney

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

Trusted Legal Analyst & Thought Leader

Trusted Legal Analyst & Thought Leader

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

Author of Two Legal Bestsellers

Author of Two Bestsellers

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

Ronald Chapman II founder of Chapman, Dowling & Mallek

Benefits for Our Washington, D.C. Federal Defense Clients

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.

Need Federal Defense Help?

Speak directly with a federal attorney — available 24/7 for calls or texts.

Detroit Premier Top Lawyers
Justia Lawyer Top Rating
Super Lawyers Top Rating
Avvo Top Attorney White Collar Crime Rating