LAWYER PROFILE
Jonah Retzinger

Jonah Retzinger

USA 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 1 practice area

About

Provided by Nixon Peabody LLP

USA

Practice Areas

Litigation

Healthcare

Complex Disputes

Healthcare Regulatory & Compliance

Healthcare Dispute Resolution

Life Sciences & Healthcare Compliance and Investigations

False Claims Act & Qui Tam Matters

Managed Care Contracts & Network Development

Career

Jonah Retzinger represents healthcare entities across the nation in civil litigation and government investigations, especially actions arising under the False Claims Act (FCA). Clients often seek his counsel in connection with complex health regulatory issues.

/My focus

I represent healthcare entities in FCA matters, government investigations, and other civil litigation involving issues related to regulatory noncompliance and reimbursement. My clients span the health sector and include national physician practice management organizations and affiliated medical groups, academic medical centers, hospitals and integrated health systems, and Medicare Advantage Organizations (MAOs).

Acting as a trusted advisor, I help healthcare entities navigate an increasingly complex regulatory landscape. I implement creative litigation management plans and work with tailored teams of attorneys and subject-matter experts to advance my clients’ positions. I also conduct in-depth exposure analyses and compliance reviews and frequently engage state and federal government agencies in connection with enforcement actions and the imposition of civil monetary penalties and other integrity obligations.

In addition to my FCA practice, I have significant experience representing healthcare entities in disputes involving the reasonableness of charges for healthcare services. I also regularly advise clients on the applicability and implementation of various healthcare laws, including the federal No Surprises Act (NSA) and associated regulations and guidance.

/Looking ahead

Health sector participants are subject to ever-expanding regulations governing the revenue cycle for healthcare services, and recent government funding sources (e.g., the CARES Act Provider Relief Fund) have created new avenues for relators to pursue opportunistic claims. In the coming years, I expect an increase in qui tam cases, as well as a real commitment from federal agencies to NSA enforcement.

Professional Memberships

American Health Lawyers Association

American Bar Association, Health Law Section

California Society for Healthcare Attorneys

Healthcare Financial Management Association

Los Angeles County Bar Association, Healthcare Law Section, Executive Committee Member

Education

Duke University School of Law

J.D.

College of William and Mary

B.B.A.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Healthcare - California

Band 5
Band 5

Individual Editorial

Jonah Retzinger is noted for his representation of a variety of healthcare providers in investigations and disputes. He is adept at handling issues concerning allegations of violations of the Stark Law and Anti-Kickback Statute.

Strengths

Provided by Chambers

  • Jonah is extremely helpful, responsive and a good thought partner.

    HealthcareChambers Guide to the USA

Ranked Individuals at Nixon Peabody LLP (74)

California

District of Columbia

Illinois

Massachusetts

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership