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Proven Federal Attorneys
Protected Clients in 45+ States

Hamilton Arendsen
Former DOJ
Trial Deputy Chief

Aaron Wiley
Former State &
Federal Prosecutor

S. Amanda Marshall
Former U.S. Attorney

Dr. Nick Oberheiden

Lynette Byrd
Former Assistant
U.S. Attorney

Hamilton Arendsen

Hamilton Arendsen

Former DOJ Trial Attorney
Local Counsel

Phone: (310) 912-7290

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, and Meritorious Unit Citation.

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.

  • Southern Illinois University, B.A (Summa Cum Laude) (Bachelor’s)
  • University of Illinois, College of Law (Summa Cum Laude) (Juris Doctor)

  • California
  • Wisconsin
  • U.S. District Court for the Southern District of California
  • U.S. District Court for the Central District of California,
  • U.S. District Court for the Northern District of California
  • U.S. Court of Appeals for the Ninth Circuit

Mr. Arendsen is the founder of Arendsen Cane Molnar LLP

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When you hire us, you will not work with paralegals or junior lawyers. Each lawyer in our Health Care Practice Group has handled at least one hundred (100) matters in the health care industry. So, when you call, you can expect a lawyer that immediately connects with your concerns and who brings in a wealth of experience and competence. For example, you need someone like Lynette S. Byrd, a former federal prosecutor in health care matters, who recently left the government and who is now sharing the valuable insights she gained as a health care prosecutor with our clients.

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Lynette S. Byrd

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Amanda Marshall




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