Marlene Koury

Marlene Koury is a partner in the San Francisco office of Constantine Cannon. Ms. Koury began her career in New York with a focus on antitrust litigation in the healthcare sector, and went on to co-found the firm’s whistleblower practice, which has grown over the last decade into the preeminent whistleblower practice in the country.

Ms. Koury is a seasoned litigator and nationally recognized expert in the areas of healthcare and education fraud. She has been named one of the 500 leading plaintiff financial lawyers by Lawdragon for six consecutive years, from 2019 to 2024. Her practice focuses on representing whistleblowers in a range of complex fraud matters, including Medicare and Medicaid reimbursement, risk adjustment, for-profit education, pharmaceutical and medical device marketing, clinical research, kickbacks, and anti-money laundering violations.

Ms. Koury has represented whistleblowers in several successful cases, including as co-lead counsel in U.S. ex. rel. Lacey v. Visiting Nurse Service of New York, securing a $57 million settlement in a landmark case. This case marked the first reported False Claims Act settlement involving a home health agency’s failure to follow patient Plans of Care and stands as the largest non-kickback FCA settlement in the home health care sector. Ms. Koury also represented the plaintiff in a Medicare fraud case, U.S. ex. rel. Beeson v. Rose Cancer Center, that was resolved through a multi-million dollar forfeiture and a criminal conviction against the defendant who was diluting critical cancer medication.

Ms. Koury is currently representing whistleblowers in multiple high-stakes cases, including sealed matters involving multimillion-dollar frauds related to Stark and Anti-Kickback laws, healthcare fraud in areas such as dialysis services, genetic testing, pain and rehabilitation clinics, ophthalmology, and specialty hospitals, as well as education and financial aid fraud, and anti-money laundering cases under the Bank Secrecy Act against major financial institutions.

Ms. Koury has over a decade of experience collaborating with attorneys at the U.S. Department of Justice and state attorney general offices, providing invaluable leadership in major government investigations. With her background in antitrust, she handles cases that intersect whistleblower and antitrust law, leveraging her diverse expertise to drive impactful outcomes.

Featured posts

• The Dawn of Antitrust Whistleblowing (with Kristian Soltes) (June 9, 2021)