LAWYER PROFILE
Mark B. Langdon

Mark B. Langdon

USA 2026

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Ranked in 1 practice area

About

Provided by Sidley Austin LLP

Practice Areas

MARK LANGDON represents a diverse array of healthcare industry clients on numerous regulatory, compliance, fraud and abuse, and reimbursement matters. His clients have primarily included pharmaceutical and device manufacturers, durable medical equipment companies and imaging companies.

Mr. Langdon regularly advises manufacturers regarding healthcare regulatory compliance issues. He has particular knowledge on the federal anti-kickback statute, the federal physician “Stark” Law and the False Claims Act, and routinely counsels clients on the implications of entering into certain transactions under those laws, and on how to structure such arrangements in a compliant fashion.

Mr. Langdon also has extensive experience defending clients in criminal and civil healthcare fraud investigations. In particular, he has been involved in representing medical device, pharmaceutical and dialysis companies in several leading nationwide healthcare fraud investigations conducted by the U.S. Department of Justice and the Office of Inspector General of the federal Department of Health and Human Services. He has negotiated corporate integrity agreements and settlement agreements with the Office of Inspector General, U.S. Attorneys’ offices, and State Medicaid Fraud Control Units, on behalf of device and pharmaceutical clients. He has recently defended a pharmaceutical manufacturer accused of violating the False Claims Act and the federal Anti-Kickback Statute relating to various market share rebates and other discounting programs with customers.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Healthcare - District of Columbia

Band 3
Band 3

Individual Editorial

Mark Langdon has a broad range of expertise in healthcare. He has notable experience of handling matters relating to the Anti-Kickback Statute and False Claims Act, as well as healthcare transactions. His client base comprises providers, pharmacies and medical device manufacturers.

Strengths

Provided by Chambers

  • Mark is a great person to work with. He's great at communication and makes the process enjoyable.

    HealthcareChambers Guide to the USA
  • We can always trust his advice. He has invested time to learn our business.

    HealthcareChambers Guide to the USA
  • Mark is service-minded and makes sure that the team is getting the support they need. He is always ready to assist.

    HealthcareChambers Guide to the USA

Ranked Individuals at Sidley Austin LLP (377)

California

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