Whistleblower and False Claim Cases

GBB Attorneys: Helping Whistleblowers Make An Impact; nearly $6 Billion Recovered.

Over the past five years alone, the attorneys at GBB have worked with whistleblowers in cases resulting in the return of nearly $6 billion to federal and state governments. GBB attorneys have worked with their whistleblower clients to secure recoveries against the largest pharmaceutical companies, major energy companies, health care providers, and defense contractors. Firm counsel have litigated under Federal and State False Claims Acts and have brought cases under the Securities and Exchange Commission (SEC) and Internal Revenue Service (IRS) whistleblower programs.
Paul J. Zwier II is one of the nation’s most distinguished professors of advocacy and skills training, providing expert advice on trial strategy, jury analysis, and negotiation and mediation.
Elizabeth Shofner is Of Counsel at Guttman, Buschner and Brooks focusing on complex civil litigation, including false claims litigation, and corporate governance matters.
Dr. Caroline Poplin, a lawyer and medical doctor, provides legal and medical advice on cases involving off-label marketing of pharmaceuticals, and Medicare/Medicaid fraud.

Dr. Caroline Poplin

Of Counsel & Medical Director

Daniel Guttman focuses his law practice has on energy, environment, antitrust, whistleblower cases brought under the Federal False Claims act and employment law.

Dan Guttman

Of Counsel

Justin S. Brooks represents relators in qui tam litigation under the federal and state False Claims Acts and corporate clients in complex commercial and employment litigation.

Justin S. Brooks

Founding Partner

Mr. Guttman has litigated complex cases involving fraud, breach of fiduciary duty, environmental derelictions, antitrust, torts or statutory violations.


Founding Partner

A former state prosecutor, Traci Buschner has spent nearly 30 years representing plaintiffs in complex litigation ranging from class actions to government contract fraud.


Founding Partner