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Diane Roldán

Partner
Diane is an accomplished litigator, specializing in counseling health care providers and California businesses.
Diane B. Roldán, Associate, Arent Fox LLP

Diane helps clients avoid and resolve disputes. In litigation, she counsels clients at every stage of the process, from the initial complaint to the winning verdict.

Diane specializes in the health care sector. She currently represents hospitals, medical staffs, residency programs, health care districts, and major health care systems throughout California in complex litigation, peer review proceedings, employment disputes, and administrative hearings. Diane is a trusted advisor to clients on regulatory reporting, credentialing procedures, bylaws, governance, and fair hearing rights. She is also the lead author of several amicus curiae briefs on behalf of the California Hospital Association.  

Diane also represents mid-size businesses, national corporations, and investors in state and federal court, as well as numerous forms of domestic and international arbitrations. Her successful jury trial verdict was named one of the Top 25 verdicts in California in 2017 for breach of contract.

Prior to joining Arent Fox, Diane clerked for the Honorable John R. Fisher of the D.C. Court of Appeals in Washington, D.C. She received her law degree from Stanford Law School, where she was named a 2011 Stanford Public Interest Fellow.

Health Care Litigation & Peer Review

Diane represents hospitals, medical staffs, and other health care providers in civil litigation, peer review hearings, and Medical Board proceedings. Recent matters include:

  • Representing hospital medical staffs throughout California in peer review hearings involving summary suspensions, restrictions, and termination recommendations.
  • Counseling a large California health system in civil litigation involving a summary suspension of a physician's privileges, alleged whistleblower retaliation, and the Anti-SLAPP statute. The case is currently pending before the California Supreme Court.
  • Defending a hospital in connection with False Claims Act allegations brought by the Department of Justice against a medical devices provider.
  • Representing the California Hospital Association as an amicus curiae to the California Supreme Court on the issue of peer review hearing officer neutrality and the California Court of Appeal on the COVID-19 pandemic.
  • Advising a California public healthcare district on breach of contract litigation in state court.
  • Successfully defending a leading Southern California hospital’s residency program against claims of whistleblower retaliation, sexual harassment, and breach of contract brought by a former resident.

Health Care Counseling

Diane guides hospitals and medical staffs in complying with increasingly complex regulatory requirements. Recent matters include

  • Advising clients on regulatory reporting requirements, including National Practitioner Data Bank (NPDB) reports and Medical Board of California Section 805 reports.
  • Supporting hospitals and medical staffs during California Medical Board investigations, including responding to subpoenas and witness interview requests.
  • Counseling medical staffs on credentialing standards for new applicants and reappointments, including standard minimum qualifications.
  • Revising hospital medical staff bylaws to conform with modern best practices.

Complex Civil Litigation

Diane has a decade of experience advising mid-sized and national corporations in federal court, California state court, and various arbitration forums. Recent matters include:

  • A complete jury trial victory in California state court for a client whose former employee stole millions of dollars’ worth of trade secrets before joining a major competitor in China. This case was named one of the Top 25 breach of contract verdicts in California in 2017 by Top Verdicts.
  • Litigating contract termination disputes arising from the COVID-19 pandemic on behalf of a global sportswear company.
  • Defending an international airline in a federal court class action lawsuit alleging employment-based claims.
  • Representing a footwear company against state and federal claims alleging trade secret theft, patent infringement, breach of contract, and unfair competition, resulting in a favorable settlement.
  • Defending Chevron U.S.A. Inc. and Chevron Corp., in connection with claims filed by the City of Richmond related to a 2012 refinery fire in Richmond, California. Prior to trial, the case settled for a nominal amount in 2018.
  • Defending a multinational energy company in AAA arbitration against a supplier alleging breach of contract.
  • Representing a California cannabis company against claims of breach of contract, fraud, and unjust enrichment.

International Arbitration

  • Diane represented the sovereign nation Timor-Leste in two international arbitrations under UNCITRAL rules and a state-to-state arbitration at the Permanent Court of Arbitration in The Hague. 
  • Diane defended multiple international investors alleging expropriation under NAFTA and a Spanish distributor in an ICC arbitration with its U.S.-based supplier.    
  • Diane represented a telecommunications company alleging expropriation of assets by a sovereign state under NAFTA.
  • Diane successfully convinced the US Treasury Department’s Office of Foreign Assets Control (OFAC) to remove a Zimbabwean corporation from the Specially Designated Nationals (SDN) and Blocked Persons list.
  • Diane won a complete victory for a pro bono client, when the United Nations Mechanism for International Criminal Tribunals (UN MICT) withdrew its allegation of contempt against a film production company screening its award-winning documentary, chronicling the first-ever prosecution of rape as a crime of war.

Publications & Presentations

Diane is a regular contributor to Arent Fox’s Health Care Counsel Blog. Highlights from her recent publications and presentations include:

  • Host, Arent Fox Fellows Presents Panel on “Racial & Ethnic Disparities in Maternal Health Care,” January 25, 2021.
  • “Searching for Safe Harbors? CMS-Sponsored Model Participants Receive Anti-Kickback Statute Protection,” January 13, 2021.
  • “Whistleblower Lawsuits & Interminable Hearings: Protecting Peer Review in an Increasingly Litigious State,” California Association for Medical Staff Services (CAMSS) 2020 Education Series, Online, July 23, 2020.

  • “NPDB Reporting Deadlines Remain Firm Despite COVID-19 Emergency,” May 12, 2020.

  • “UCLA Escapes $13 Million Gender Discrimination Verdict in Favor of Physician,” April 29, 2020.

  • “California Attorney General Clarifies State Reporting Deadlines for Medical Staff Discipline,” April 23, 2020.

  • Rescheduled due to COVID-19: “Anti-SLAPP in Peer Review: The Evolution Continues,” California Society for Healthcare Attorneys (CSHA) Spring Conference, April 24, 2020, link to brochure.
  • “The Corrective Action Tool Box: What Options Do You Have?,” Medical Staff Leaders and the Law Conference, San Francisco and Costa Mesa, February 28, 2020 and March 6, 2020, link to brochure.
  • “Federal Agency Sues Hospital Over Late Career Practitioner Policy,” February 14, 2020.
  • “Working Across Generations,” Chief of Staff Boot Camp, Marina del Rey, February 7, 2020.
  • “Court of Appeal Rejects Bias Challenge to Peer Review Hearing Officer,” October 23, 2019.
  • “The Anti-SLAPP Evolution Continues: California Supreme Court Confirms Anti-SLAPP Protection Can Apply to Retaliation and Discrimination Claims,” July 25, 2019.
  • “Teaming With Your Lawyers to Avoid Lawsuits: Strategies for Medical Staffs and Hospitals,” Medical Staff Leaders and the Law 2019: San Francisco, March 1, 2019.
  • “Is It Reportable? HRSA Updates NPDB Guidebook for the First Time in Three Years,” November 8, 2018.
  • “Arbitration in California,” Delos Dispute Resolution’s Guide to Arbitration Places, 2018.
  • “Whistleblower Lawsuits and Peer Review,” Medical Staff Leaders and the Law 2018: Costa Mesa, February 2018.
  • “Making the Most of Prejudgment Writs of Attachment,” Los Angeles Lawyer, September 2017.