We are a team of
former federal prosecutors


Most of our cases have ended in
No Criminal Charges

Meet the Team
Oberheiden Attorneys

Hamilton Arendsen

Dallas Best Lawyers
Hamilton Arendsen
Of Counsel
Phone: (214) 469-9009
Fax: (972) 559-3365
Email: ha@federal-lawyer.com


  • University of Illinois, College of Law, Juris Doctor (summa cum laude)
  • Southern Illinois University, B.A (summa cum laude)

  • Federal Bar Association
  • California State Bar Association
  • San Diego County Bar Association

Hamilton Arendsen is a distinguished trial lawyer that represents individual and corporate clients in civil and criminal proceedings throughout the nation.

Prior to opening his practice, Mr. Arendsen served as a Deputy Chief of the Trial Section of the United States Attorney’s Office for the Southern District of California.  In that capacity he led a team of federal prosecutors and supervised prosecutions of white-collar offenses, health care fraud, drug trafficking, and federal violent crimes.  Prior to becoming the Deputy Chief, Mr. Arendsen worked his way up within the United States Attorney’s Office and prosecuted more than 30 federal jury trials during his tenure with the Department of Justice.

Mr. Arendsen has received numerous awards for his trial skills and work in the both the criminal and civil arena.  His list of recognition includes the Certificate of Congressional Recognition, Meritorious Unit Citation, and Outstanding Trial Lawyer Award.

In addition to his nationally recognized criminal trial practice, Mr. Arendsen prides himself assisting clients on numerous diverse and challenging civil matters.  These including representation of corporations, directors, and officers in a wide array of cases that often involve tens or even hundreds of millions of dollars in dispute in state and federal courts across the country.  Recently, Mr. Arendsen’s criminal defense practice has focused on health care fraud defense, securities investigations, and health care litigation, with particular emphasis on complex cases involving the False Claims Act, Stark Law, and Anti-Kickback statute.  He has handled cases from the investigation stage, including conducting internal investigations at the request of audit committees, corporations, and boards of directors, through trial.

Before becoming a federal prosecutor, Mr. Arendsen clerked for the Honorable Henry A. Politz of the United States Court of Appeals for the Fifth Circuit and also worked as an associate in the international litigation firm Gibson Dunn.

Mr. Arendsen is licensed to practice in California and Wisconsin as well as before various federal courts including the U.S. District Court for the Southern District of California, the U.S. District Court for the Central District of California, the U.S. District Court for the Northern District of California, and the U.S. Court of Appeals for the Ninth Circuit.

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