Professional Details

Agata Zwierzchowski
Senior MediatorSenior MediatorSenior Mediator

Zwierzchowski & Nguyen, A PC

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115 Pine Avenue,
Suite 360
Long Beach, CA 90802


Description of Practice

I mediate all aspects of divorce, post-judgment parenting issues, non-marital property division, LGBTQ divorce, parenting, and Marvin-type matters, and all other family law type conflicts (including estate planning and trust issues). My 18 years of experience as a family law attorney proves to be an invaluable asset for my mediation clients because I can offer many settlement options and fully explain the alternatives to a mediated agreement. As a mediator, I am patient, facilitative, and informative. I mediate on flat fee basis because I believe that my clients deserve full transparency and finality. In my years of litigating family law matters, I learned that the best outcomes are those that parties negotiate themselves. Mediation offers not only an opportunity to have a peaceful transition to a post-divorce or post-break up co-parenting but also to look deeper into oneself for a transformative experience.

Professional Background

I am a family law attorney and certified family mediator with Zwierzchowski & Nguyen in Long Beach, California. I joined the California Bar in June of 2003 and have practiced family law since then. I also handled trust litigation, Marvin-type cases, and real estate partition matters, all of which exposed me to a full spectrum of family-bases conflicts. My goal as an attorney and as a mediator is to help parties reach a lasting resolution of their conflict.


40-hour basic divorce mediation training, Mosten Mediation, 2015 12-hour advanced divorce mediation training, Mosten Mediation, 2019 Continuous participation in mediation study group, 2015-current Continuous participation in Reflective Case Consultation group, 2020-current Mediated over 1000 cases


BA in Philosophy with a minor in women's studies from University of Wisconsin-Madison, 1997 JD from Golden Gate University, San Francisco, CA, 2002 Admitted to practice in CA, 2003




Flat fee packages ( Within the flat fee, I mediate issues, assist parties in preparation of their disclosures, and prepare and draft all court filings including stipulated judgment packages.

Other Information

I focus on ensuring that parties have the necessary information to have all-inclusive complete agreements.

Areas of Practice

  • Adult Family
  • Divorce (all issues)
  • Divorce (parenting)
  • Estate Planning
  • Family
  • Online Family/Divorce
  • Online Mediation
  • Parent-Teen
  • Real Estate

Professional Services

  • Mediator
  • Representational Lawyer
  • Mediating Lawyer
  • Mediation Consultant
  • Collaborative Professional
  • Facilitator
  • Online Mediator
  • Strategic Planning

References available upon request.

This dispute resolution professional keeps professional liability insurance.