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Shireen Matthews is a former federal prosecutor who now helps companies conduct internal investigations and build, enhance, and maintain effective corporate compliance programs. She regularly defends clients in high-stakes government investigations and regulatory proceedings relating to health care, false claims, cybersecurity, and data privacy. Shireen also is an experienced civil litigator who represents businesses facing complex, and often enterprise-threatening, litigation. She has managed civil discovery, including depositions and motion practice, from case inception through trial.

Prior to joining Jones Day in 2013, Shireen served as the Criminal Health Care Fraud Coordinator for the U.S. Attorney's Office in the Southern District of California. During that time, she prosecuted violations of the Anti-Kickback Statute, criminal false claims, and aggravated identity theft. Her success stories include uncovering a multimillion dollar fraud involving stolen medical equipment from Camp Pendleton, prosecution of wide-ranging contract fraud by a San Diego-based biotech firm, and obtaining one of the largest individual restitution awards for the Social Security trust fund. Shireen also has broad criminal trial experience and has successfully briefed and argued several cases before the Ninth Circuit Court of Appeals.

An engaged community leader, Shireen serves on the board of trustees for Scripps Health and is a past president of the San Diego Chapters of the South Asian Bar Association and the Federal Bar Association. She also serves on the board of directors for Big Brothers Big Sisters of San Diego County and the San Diego Federal Bar Foundation. Shireen is the San Diego Office's administrative partner, co-chair of the Firm's South Asian Affinity Group, and a member of the Firm's Diversity, Inclusion and Advancement Committee.


  • MedImpact wins summary judgment in trade secret case over misuse of its pharmacy benefit management technologyJones Day successfully represented MedImpact Healthcare Systems in this international trade secret litigation against IQVIA arising out of a joint venture relationship.
  • Marine Corps veteran wins honorable dischargeJones Day obtained a discharge upgrade for pro bono client, P.C., a 27-year-old Marine who received a General Discharge Under Honorable Conditions from the U.S. Marine Corps based on a non-disabling mental health condition just four months short of the expiration of his term of active duty service.
  • Qualcomm defeats series of appellate writs by Apple in trade secret litigationJones Day represented Qualcomm Incorporated and Qualcomm Technologies, Inc. at the California Court of Appeal's Fourth District in opposing a series of three petitions for writ of mandate or prohibition brought by Apple Inc.
  • Qualcomm pursues trade secret and contract claims asserting Apple's misuse of Qualcomm's trade secret software and source codeJones Day represented Qualcomm Incorporated and Qualcomm Technologies, Inc. in a lawsuit asserting trade secret misappropriation and breach of contract claims against Apple Inc.
  • Health care management company conducts internal investigation relating to alleged overpayment of federal health care fundsJones Day represented a privately-owned health care management company in an internal investigation relating to alleged overpayment of federal health care funds.
  • Health care management company reviews compliance with Medicare regulationsJones Day provides ongoing counseling, training, and advice to a health care management company regarding compliance with federal and state health care regulations.
  • Fortune 500 medical device company conducts mock dawn raidJones Day devised and conducted a mock dawn raid and training at the Brazilian headquarters of a U.S.-based Fortune 500 medical device company.
  • San Diego-based business resolves environmental enforcement actionJones Day successfully defended the President and Owner of a San Diego-based business in an enforcement action brought by the U.S. Attorney's Office (Southern District of California) and the Environmental Protection Agency, alleging violations of the Clean Water Act.
  • National retailer defends allegations of corruption in Latin America and AsiaJones Day is representing a national retailer in an internal investigation into allegations of corruption in multiple countries in Latin America and Asia and related DOJ and SEC investigations.
    • October 20-21, 2016
      California Minority Counsel Program – 27th Annual Business Conference
    • September 21-23, 2016
      Corporate Counsel Women of Color Career Strategies Conference
    • May 3-4, 2016
      The Culturally Competent Law Department: Promoting Inclusion
    • April 21, 2016
      What To Do When . . . The Government Shows Up with a Search Warrant: Preparing for, Responding to, and Surviving a Raid
    • February 9, 2016
      Government Investigations of Corporate Misconduct: Privilege, Self-Reporting, Yates Memo and Other Key Issues
    • March 2014
      Health Care Enforcement Priorities and Compliance Considerations, Health Ethics Trust - Certification Intensive Course