Jesse A. Witten

Jesse Witten is one of the leading health care fraud and abuse attorneys in the nation. He combines litigation skills, a keen strategic sense and deep knowledge of Medicare and other government health care programs to guide his clients through government investigations, False Claims Act (FCA) litigation, and other matters involving health care fraud and … Read more

Lisa S. Rivera

A former federal prosecutor, Lisa Rivera’s practice focuses on advising healthcare providers, pharmaceutical manufacturers, medical device companies and other clients on matters related to civil and criminal healthcare fraud and abuse, as well as government investigations and enforcement. Lisa has significant experience handling matters arising under the False Claims Act, the Anti-Kickback Statute, the Stark … Read more

Brian D. Roark

Brian Roark is the head of Bass, Berry & Sims’ Healthcare Fraud Task Force and concentrates his practice on representing healthcare clients in responding to governmental investigations and defending False Claims Act lawsuits. He has successfully litigated and resolved numerous healthcare fraud matters involving hospitals and health systems, ambulatory surgery centers, hospices, home health companies, … Read more

Michael S. Poulos

Michael S. Poulos concentrates his practice on complex litigation relating to consumer fraud, securities, insurance and professional malpractice litigation, as well as various forms of governmental investigations by the SEC, US Attorney’s office and other agencies. He is experienced representing clients from Fortune 500 companies to small closely held corporations.

Theresa C. Carnegie

Theresa has extensive experience advising clients on all aspects of the pharmaceutical supply chain. Her practice involves advising industry stakeholders on a range of business, legal, transactional, and compliance matters. Theresa combines her multilayered industry knowledge with a deep understanding of applicable federal and state legal frameworks, in particular federal and state fraud and abuse … Read more