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What we do

We represent whistleblowers for the same reasons that courageous men and women come forward to expose wrongdoing, injustice, or cheating: we believe in accountability, justice, and fairness, whether that’s for taxpayers, investors, consumers, competitors, or the government.

Our Clients Trust Us

Whistleblowing can be a stressful process stretching over many years. Our clients often work for many years to effect change before they call us. From our first conversation, we’ll listen to your story. If we work together, our team of whistleblower lawyers will be at your side with support and expert legal guidance at every turn – through government investigations, legal filings, settlement, or litigation if necessary. All along the way, we’ll help you understand what to expect and the best legal avenues for you and your case.

WHISTLEBLOWER LAWYERS
WITH
DEEP EXPERIENCE AND INTERNATIONAL SCOPE

Our clients come to us because they can’t stay silent about wrongdoing such as corporate fraud, false claims, overcharging, cheating, investor deception, price fixing, kickbacks, bribery, defective products, and tax evasion.

Our cases arise from business and industry, as well as those working with government contractors. Our cases come from within the United States and overseas. In our globalized world, international wrongdoing falls under U.S. whistleblower statutes when companies do business in the United States, are traded on U.S. stock exchanges, or have government contracts.

Clients come to us because they know that we have a track record of working closely with government attorneys, agents, and investigators. We make sure that the right federal and state government officials clearly hear our clients’ stories, and that those officials know that they can rely on our attorneys and our clients for the kind of reliable information and analysis that’s needed for a successful outcome.

We take on whistleblower cases of all types, characteristics and sizes. And our clients range from minimum-wage earners to management. Each case is important to us.

Making a Difference

During the last two decades, our committed whistleblower lawyers have recovered more than $450 million in awards for whistleblowers. Monetary rewards for whistleblowers arise from the recognition that whistleblowers often put their careers and livelihoods on the line to expose wrongdoing, and should be compensated for their role in recovering funds for the government, taxpayers, investors and others.
Whistleblowers come to us because we understand the complicated, constantly changing landscape of state and federal whistleblower laws. We have a proven track record of working closely and effectively with state and federal governments on behalf of our clients. We bring to our cases the kind of resources and staying power that government sometimes can’t.
As whistleblower lawyers, we have successfully represented clients under the False Claims Act and whistleblower laws that apply to the Internal Revenue Service, Securities and Exchange Commission, the Commodity Futures Trading Commission, as well as state statutes and other programs.

Click here for a confidential contact or call:

1-347-417-2192

Whistleblower Cases

Handled by Constantine LLP Attorneys.

Community Health Network – Healthcare Fraud/Kickbacks ($135 million)

Constantine Cannon represented a whistleblower alleging Indiana-based Community Health Network violated the False Claims Act and Stark Law by paying physicians exorbitant salaries in exchange for referrals to...

January 23, 2025
Independent Health – Healthcare Fraud/Medicare Advantage ($98 million)

Constantine Cannon represented a whistleblower alleging Buffalo-based Independent Health violated the False Claims Act by submitting invalid and unsupported diagnosis codes to Medicare for Medicare Advantage...

January 23, 2025
DaVita – Healthcare Fraud/Kickbacks ($34.5 million)

Constantine Cannon represented a whistleblower alleging Denver-based provider of dialysis services DaVita Inc. violated the False Claims Act and Anti-Kickback Statute by paying physicians for referring patients to DaVita’s...

July 26, 2024
Major Banks – Procurement Fraud/Finance ($70 million)

Constantine Cannon represented a whistleblower in an Illinois False Claims Act case alleging eight of the nation’s largest banks – including Bank of America, Barclays,...

March 25, 2024
KBR - Procurement Fraud/Defense ($108.75 million)

Constantine Cannon represented two whistleblowers in a False Claims Act case alleging defense contractor KBR Services overcharged the government in procuring supplies for U.S. troops stationed in Iraq...

July 06, 2023
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Learn about Whistleblower Rewards Programs

False Claims Act State & Local False Claims Acts SEC Program CFTC Program IRS Program
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Whistleblower Insider Blog Posts

Oct072026
Dompé to Pay $32M to Resolve False Claims Act Allegations Following Self-Disclosure of Patient Kickbacks

By the Constantine LLP Whistleblower Team On September 10, the Department of Justice announced that California-based company Dompé U.S. Inc. agreed to pay $32 million to...

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Oct052026
DOJ Continues Crusade Against Medicare Advantage Fraud With Whopping $541.5M False Claims Act Settlement Against Villages Health System

By the Constantine LLP Whistleblower Team In case you missed it, we wanted to revisit the August 26 Department of Justice (DOJ) blockbuster settlement under...

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Oct052026
Tetra Tech To Pay $57M To Settle False Claims Act Allegations of Falsifying Soil Test Results Under Navy Contract

By the Constantine LLP Whistleblower Team On August 24, the Department of Justice (DOJ) announced that Tetra Tech paid $57 million to resolve False Claims...

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Oct052026
Frazier Aviation’s Former Chief Executive To Pay $4.9M to Resolve FCA Procurement Fraud Allegations

By the Constantine LLP Whistleblower Team On September 29, the U.S. Attorney’s Office for the Eastern District of Virginia announced that California-based Frazier Aviation, Inc. and...

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