Michael Maddigan > Hogan Lovells US LLP > Los Angeles, United States > Lawyer Profile

Hogan Lovells US LLP
SUITE 1400
United States

Work Department



Office Managing Partner


For more than two decades, Mike has been at the forefront of significant commercial and class action litigation for established and emerging companies across the health care, insurance, and technology industries. Mike focuses on litigation and counseling involving matters related to breach of contract, health care regulatory issues, the False Claims Act (FCA), privacy and data breaches, and insurance. Over the years, Mike has led teams that obtained judgments in favor of his clients on claims totaling billions of dollars. Mike Maddigan is tough, but also practical and solution-oriented. He has negotiated creative and innovative settlements to avoid and resolve litigation. By using the right tool at the right time, Mike helps clients solve problems and address risks in ways that accomplish their business objectives.

Mike leads the Los Angeles office and the Los Angeles litigation group and is a thought leader in the health care and privacy areas. He is the co-author of Health Care Reform: Law and Practice, a publication that provides guidance on the Affordable Care Act’s impact on health plans, employers, and individuals. He is also co-author and editor of Medical Records Privacy Under HIPAA. Mike speaks and writes on professional issues including the FCA, emerging issues in privacy law (such as California’s CCPA), and new developments in health care and insurance law.




President, Board of Directors, Los Angeles Legal Aid Foundation; Member, Association of Business Trial Lawyers (President 2010-2011, Vice President 2009-2010, Treasurer 2008-2009, Secretary 2007-2008); Past President, Los Angeles Irish American Bar Association; Member, American Health Lawyers Association and Los Angeles County Bar Association, Healthcare Law Section.


J.D., University of California, Berkeley School of Law, 1992; B.S.F.S., Georgetown University, School of Foreign Service, cum laude, 1989

Lawyer Rankings

United States > Industry focus > Healthcare: health insurers

Hogan Lovells US LLP has a strong track record in class actions, fraud and abuse litigation, routinely acting for market-leading health insurers. Of recent note, Miami-based attorneys Craig Smith and David Massey defended Centene in a state-wide putative class action suit concerning adequate access to certain prescriptions; the case ended in dismissal and a later resolution between the parties. Other key clients include United Healthcare and Anthem, which the firm represents in ERISA litigation, arbitration and general business disputes, among other matters. Michael Maddigan leads the Los Angeles litigation practice, and is recognized for his experience in class actions, False Claims Act cases, and internal investigations. In addition to its focus on high-stakes litigation, the team also advises on transactional matters and compliance, antitrust and privacy issues. Sheree Kanner leads the practice group from Washington DC.