JONAH D. RETZINGER is a Member of the Firm in the Health Care & Life Sciences and Litigation & Business Disputes practices, in the Los Angeles and Washington, DC, offices of Epstein Becker Green.

After practicing in the firm’s Washington, DC, office for the first seven years of his career, Mr. Retzinger transitioned to Los Angeles in 2018. He is a co-leader of the firm’s Government Enforcement service team and represents health care organizations and health systems in False Claims Act (“FCA”) litigation, governmental investigations, and commercial disputes.

Apart from developing comprehensive litigation defense strategies and conducting historical analyses of regulatory schemes and the compliance function, Mr. Retzinger and his colleagues engage U.S. attorneys’ offices, as well as federal and state governmental agencies, including the Office of the Inspector General of the U.S. Department of Health and Human Services (“HHS”), on matters such as intervention, the exercise of the U.S. Department of Justice’s FCA dismissal authority, and the determination of the appropriateness of Corporate Integrity Agreements and other integrity obligations. 

Recent FCA matters include defending:

  • A Medicare Advantage organization against allegations of noncompliance with federal regulations regarding oversight of first-tier vendors
  • A health system against allegations of noncompliance with federal regulations and Medicare administrative contractor guidance regarding the billing of clinic services
  • A national administrator of wound healing centers against allegations of noncompliance with federal regulations regarding the billing and supervision of wound care services

Other recent representations include:

  • Defending a national management services organization and affiliated physician practices in federal court against class-action allegations of violations of state consumer protection laws
  • Pursuing breach of contract claims at arbitration on behalf of a health system against a contracted payor
  • Defending a medical device manufacturer in federal court against employee piracy claims brought by a competitor

Upon graduating from Duke University School of Law, Mr. Retzinger was recognized and received an award for outstanding achievement in regulatory law. He was also very active in the Duke AIDS Legal Assistance Project, a free clinic that provides legal representation for low-income individuals who have tested positive for HIV. The American Health Lawyers Association has named Mr. Retzinger an AHLA Pro Bono Champion in recognition of his efforts in providing pro bono services. Mr. Retzinger clerked for the HHS Office of Counsel to the Inspector General.

  • Duke University School of Law (J.D., cum laude, 2011)
  • College of William and Mary (B.B.A., 2008)
Court Admissions
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court, Central District of California
  • U.S. District Court, District of Columbia
Bar Admissions
  • California
  • District of Columbia
  • New York
  • American Health Lawyers Association