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James Mortensen

Meet James D. Mortensen

Attorney at Law


Mr. Mortensen earned his Juris Doctor (Summa Cum Laude) from Whittier Law School in Costa Mesa, California, and a Master of Laws (Taxation) from Chapman School of Law in Orange, California. He has a Bachelor of Science (With Honors) from Utah State University in Logan, Utah. Mr. Mortensen is admitted to practice law in the United States Tax Court, the United States District Courts for the Northern, Eastern, Central, and Southern Districts of California, and in all California state courts.

Memberships & Affiliations

He is a member of the American Bar Association, the Los Angeles County Bar Association, the Orange County Bar Association, and is a licensed California Real Estate Broker. Prior to practicing law, Mr. Mortensen was a Licensed Securities Principal and Insurance Agent in Utah and Colorado.

Practice Areas

Mr. Mortensen is a highly valued and experienced member of our legal team. He has provided successful results for his clients in the following areas:

Contact our firm today to schedule a consultation with James Mortensen!

Client Testimonials

See how we've helped our past clients.
  • “I'm extremely happy with the advice and resultant estate plans provided.”

    Annette F.

  • “Noah was great!”

    Dellia & Michael

  • “Noah is so knowledgeable, informative and very caring.”

    Roxanne B.

  • “I would recommend her highly!!”

    James C.

  • “I was happy with her research, in fact my meetings were a point of learning.”

    Dorothy C.

  • “Tamsen is nothing short of amazing.”

    Regina S.

  • “Their costs are amazingly reasonable.”

    Anne M.

  • “I want to thank you both very much for all that you did.”

    Tony L.

  • “Mr. Herbold was extremely honest with information and probable outcome.”


  • “Ms. Reinheimer's excellence in these areas is clearly apparent.”

    Susan B.

  • “A very professional service in an easy to understand approach”

    Teresa Y.

  • “Tamsen is an extremely thorough, proficient and creative attorney.”

    Tina M.

Why Work With Mortensen & Reinheimer, PC?

  • With 50 years of combined experience, we've handled cases of all types and can confidently help you.

  • We strive for excellence. Our knowledgeable and courteous staff work hard so that you don't have to.

  • We handle each case on a one-on-one basis and explore all possible options with you.

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