• Martin J. Thompson

    Senior Counsel
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    Costa Mesa
    Direct: 714.371.2530
    General: 714.371.2500
    Fax: 714.371.2550


    University of California Berkeley Boalt Hall School of Law J.D., 1973.
    Order of the Coif. 
    Associate Editor, California Law Review.


    University of California Davis, A.B., 1970, with highest honors, Phi Beta Kappa.

    Bar Admissions
    • Profile
    • Representative Matters
    • Honors & Awards
    • Publications
    • Memberships & Activities
    • Speaking Engagements


    Martin Thompson’s practice focuses on the healthcare industry, including multi-hospital systems and other healthcare providers, as well as other businesses. He is the author of the first book ever published on the subject of applying antitrust law to the healthcare industry (Antitrust and the Health Care Provider, Aspen Systems, 1979), and has focused his practice on antitrust matters within the healthcare industry for over 30 years.

    He has served in leadership roles in the American Bar Association Antitrust and Healthcare sections, the American Health Lawyers Association, the National Health Lawyers Association, and the California Society for Healthcare Attorneys.

    He has been a frequent speaker on antitrust topics at healthcare seminars and has authored numerous articles and contributed to books on this topic. He has guided numerous healthcare mergers through agency processes and litigated cases concerning these subjects.

    Representative Matters

    Honors & Awards

    The Best Lawyers in America, 2007-2016.

    Named as one of the Top-Ranked Attorneys, Chambers USA, 2006-2007 and 2010-2015.


    Author, Antitrust and the Health Care Provider, Aspen Systems, 1979.

    Author, “Antitrust Issues in the Managed Care Environment,” Part II, Ch. 2, Business of Managed Care, Mosby Pub. 1995.

    Author, “Antitrust Analysis of Hospital Mergers,” XV Ca. Health Law News 17, 1995.

    Author, “Exemptions and Immunities,” Antitrust Health Care Enforcement and Analysis, American Bar Association, 25-46, 1992.

    Author, “Summit Health v. Pinhas; It’s Less Than Meets the Eye,” XI Ca. Health Law News 54, 1991.

    Mr. Thompson has also authored numerous other articles.

    Memberships & Activities

    Admitted to practice in California.

    Chair, American Bar Association Health Law Section Litigation and Risk Management Interest Group, August, 2005 – 2007.

    Former Member and Board of Directors, The National Health Lawyer’s Association.

    Former Vice Chairman and Subcommittee Chairman, American Bar Association Antitrust Section Healthcare Committee.

    Former Vice Chair, American Health Lawyers Association Standing Committee on Antitrust.

    Co-chair, Joint American Bar Association/American Health Lawyer’s Association Antitrust Healthcare Biannual Seminar.

    Speaking Engagements

    Speaker, “Year in Review,” NHLA, Antitrust in Healthcare, May 12&13, 2005 and May 15 & 16, 2003.

    Speaker, “Recent Developments in Health Care Antitrust,” 2003 Annual Meeting and Spring Seminar, California Society for Healthcare Attorneys, April 6, 2003.

    Speaker, “Physician Collective Bargaining, Joint Negotiations and the Messenger Model,” AHLA Annual Meeting, June 19 & 20, 2001.

    Speaker, “Antitrust Issues in E-Health,” ABA/AHLA Antitrust & Healthcare Conference, May 17 & 18, 2001 (also served as a Conference Co-Chair).

    Speaker, “Litigation Strategies for Providers Denied Access to Managed Care Plans and Networks,” AHLA Antitrust on the Healthcare Field February 17 & 18, 2000.

    Speaker, “Antitrust Issues Arising from Certification Requirements,” AHLA Antitrust on the Healthcare Field, February 25 & 26, 1999.

    Speaker, “Ethical Issues in Mergers and Acquisition Transactions,” NHLA, M&A 2000. January 16 & 17, 1997.

    Speaker, “Antitrust Risk and Compliance Procedures,” ABA: Legal Audits of Healthcare Organizations, June 6 & 7, 1996.