Brown, LLC hires former New Hampshire civil chief Raphael Katz for whistleblower practice

Brown, LLC said Sept. 3, 2026 that Raphael Katz, the former Civil Chief at the U.S. Attorney’s Office for New Hampshire, has joined the firm as a partner in its national whistleblower and False Claims Act practice. The hire adds another senior federal fraud-enforcement lawyer as the firm expands after a string of large whistleblower recoveries.

Why it matters: - Brown, LLC is adding a lawyer with both government-enforcement and whistleblower-side experience to its False Claims Act team. - The move gives the firm another senior federal fraud-enforcement hire as whistleblower litigation remains active nationwide. - The firm is positioning itself for major cases involving healthcare fraud, procurement fraud, government contracting, customs, cybersecurity, and other claims tied to federal funds.

What happened: - Brown, LLC announced that Raphael Katz has joined the firm as a partner in its national whistleblower and False Claims Act practice. - Katz previously served as Civil Chief at the U.S. Attorney’s Office for the District of New Hampshire. - The announcement came from Jersey City, New Jersey, on Sept. 3, 2026. - Brown, LLC said Katz is its second senior federal fraud-enforcement hire in 2026. - Tom Morris joined the firm in May after nearly two decades in the Justice Department’s Civil Division Fraud Section.

The details: - Katz spent more than 13 years in private practice before joining the U.S. Attorney’s Office in 2019. - His private-practice work included False Claims Act cases, complex litigation, and whistleblower representation. - In government, Katz supervised affirmative civil enforcement and handled fraud matters for the United States. - As Civil Chief, Katz also served as the office’s Affirmative Civil Enforcement Coordinator and Healthcare Fraud Coordinator. - His enforcement portfolio included healthcare fraud, procurement and government-contract fraud, customs and trade fraud, cybersecurity matters, loan and grant fraud, drug diversion, and other cases involving federal programs. - Katz worked with the FBI, HHS-OIG, CBP, SBA, DEA, TIGTA, and DOD-OIG on investigations and litigation. - His work included document and data analysis, civil investigative demands, witness testimony, and settlement negotiations. - Brown said Katz knows what makes the government pursue a case, what causes cases to stall, and what proof changes an outcome. - Katz said strong whistleblower cases depend on facts, documents, credible witnesses, and a damages story the government can test. - Katz said Brown, LLC has the resources to develop major cases early and litigate when needed.

Between the lines: - Brown, LLC is continuing to build a bench of former federal enforcement lawyers to strengthen its whistleblower platform. - The firm says that strategy follows back-to-back years of nine-figure federal resolutions for whistleblowers. - Lex Machina ranked Brown, LLC second nationally by False Claims Act qui tam filing volume over a five-year period. - Katz’s arrival also coincided with an Eleventh Circuit decision in Zafirov that rejected a constitutional challenge to the False Claims Act’s qui tam provisions. - Brown, LLC framed that ruling as supportive of whistleblower-driven enforcement.

What's next: - Katz will be screened from any matter in which he participated personally and substantially during government service, consistent with federal post-employment rules. - Brown, LLC said it will continue representing whistleblowers nationwide in major False Claims Act and related fraud cases. - The firm is offering confidential consultations to potential whistleblowers.

The bottom line: - Brown, LLC is using another high-level federal hire to deepen a whistleblower practice built around large fraud recoveries and experienced government insiders.