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Mortensen & Reinheimer, PC Mortensen & Reinheimer, PC
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About Us

Serving All of Orange County!

MORTENSEN & REINHEIMER, PC is an established law corporation in Orange County. We know that some of the most important objectives in a lifetime are protecting what you have earned, and planning to provide for your loved ones. Our primary goal is to ensure that whatever step you are working towards or whichever phase of life you are in, we can help accurately reflect your desires in the legal perspective of it. Whether it is creating your estate plan or handling the affairs of a loved one you lost, our attorneys will work with you on a continual basis in order to effectively meet your needs.


Mortensen & Reinheimer, PC offers unparalleled service and is dedicated to providing each of our clients with the personal attention they need to successfully handle their legal matters. We are always available to answer your questions. Our attorneys will readily meet with you to discuss the various legal situations you encounter, such as changes to your estate plan. At Mortensen & Reinheimer, PC, we build long-term relationships with each of our clients, striving to maintain their personal investments in the security and well-being of their families.

    “I would recommend her highly!!”
    Tamsen did an estate plan for my wife and myself. She did a superb job and was excellent to work with. I would recommend her highly!!
    - James C.
    “We would highly recommend Tamsen and her firm for even the most complicated situations.”

    Excellent estate attorneys and wonderful, professional, helpful staff. Tamsen has helped us not only with our trust and estate planning, but also with those of our parents and friends as well. We would highly recommend Tamsen and her firm for even the most complicated situations.

    - Elizabeth J.
    “I was happy with her research, in fact my meetings were a point of learning.”
    I was very pleased to meet Tamsen, and I was happy with her research, in fact my meetings were a point of learning.
    - Dorothy C.
    “Best in the Business!”
    Best firm for estate and trust needs. The entire team are the best in the business!
    - Scott S.
    “What stood out most was their thoroughness—nothing was rushed, nothing overlooked”

    I recently completed my estate planning—including my will and trust—with Mortensen & Reinheimer, PC, and I could not be more impressed with the entire experience! From the very first consultation to the final signing, every step felt smooth, thoughtful, and incredibly well-guided.

    The team at their Irvine office on Michelle Drive was warm, attentive, and exceptionally knowledgeable. They took the time to understand my unique situation, explained complex concepts in a way that was easy to grasp, and made sure I felt confident and protected in every decision I made. Their professionalism was matched by genuine care, which made a process that can feel overwhelming surprisingly comfortable.

    What stood out most was their thoroughness—nothing was rushed, nothing overlooked. They were proactive with communication, quick to respond to questions, and clearly committed to delivering an estate plan that was both comprehensive and tailored.

    If you're looking for a trustworthy, highly skilled law firm to help you create or update your estate plan, Mortensen & Reinheimer, PC is an outstanding choice. I’m incredibly grateful for their guidance and truly feel at peace knowing everything is in order.

    - Chad B.
    “Patient, understanding, incredibly thorough”

    I had a delicate family matter following the death of my mother and I was concerned about the execution of my parents trust. Weily was fantastic to work with. Patient, understanding, incredibly thorough, and provided a perfect amount of communication. This firm is a great option. Thanks

    - AJ C.
    “They provide the best service to their clients”

    I have worked with the firm for over 10 years. I have dealt with every attorney and office staff. They are kind, professional, efficient and very helpful. They provide the best service to their clients and to me as a partner in assisting them with taxes for their clients.

    - Donna S.
    “We offer the highest recommendation for any trust needs you may have.”

    Weily Yang and the entire staff there are nothing short of outstanding. Weily helped me and my siblings with the Trust transition for our elderly mother and also helped my wife and I with a long over-due revision of our personal trust. He was very patient and informative with the multitude of questions we all had and we could not have asked for anyone better. We offer the highest recommendation for any trust needs you may have.

    - Scott Y.

What sets us apart?

  • Personalized Care to Every Case
    We handle each case on a one-on-one basis and explore all possible options with you.
  • We strive for excellence.
    Our knowledgeable and courteous staff work hard so that you don't have to.
  • Over 75+ Years of Combined Experience

    With 75+ years of combined experience, we've handled cases of all types and can confidently help you.

Let us Help with your case

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