Marielle C.Coutrix


Washington + 1.202.879.3488

Marielle Coutrix focuses on regulatory, compliance, and civil litigation matters in the health care industry. She counsels and represents health systems, provider networks, pharmaceutical and medical device manufacturers, and digital health companies.

Marielle has helped clients navigate investigations and litigation involving alleged violations of the False Claims Act, Anti-Kickback Statute, Stark Law, and similar state laws. She recently helped secure a full defense verdict in Pikeville, Kentucky, defeating a multibillion dollar fraud claim over off-label prescriptions.

Marielle also advises clients in the digital health, food and drug, and transplantation space on regulatory issues associated with Medicare and Medicaid reimbursement, Food & Drug Administration (FDA) compliance, medical licensure, and corporate governance. She also supports clients engaged in M&A and other strategic transactions, including physician practice acquisitions and private equity investments.

Marielle maintains an active pro bono practice, representing clients in child support and immigration matters.

Marielle previously worked in grantmaking in reproductive and sexual health and, while in law school, also served as the managing notes editor for the Michigan Journal of Environmental and Administrative Law.


  • Norwest Equity Partners acquires Nationwide Organ Recovery Transport Alliance, LLCJones Day represented Norwest Equity Partners on its acquisition and financing of Nationwide Organ Recovery Transport Alliance, LLC, a provider of air and ground organ recovery transportation services.
  • Celgene wins complete defense verdict in case filed by health insurer, Humana Inc., relating to off-label use of cancer medicationsOn March 2, 2023, Jones Day prevailed in a five-week jury trial on behalf of Celgene Corporation in a lawsuit brought by health insurance company Humana, Inc.
  • KKR acquires IVI-RMA GlobalJones Day acted as U.S. counsel in the €3 billion acquisition of IVI-RMA, a group specialized in assisted reproduction techniques.
  • EagleTree Capital acquires Andronaco IndustriesJones Day advised EagleTree Capital in the acquisition and financing of Andronaco Industries, a leading provider of corrosion-resistant flow control technologies.