Gregory O. Eisenreich

Gregory Eisenreich is a litigation partner in Barger & Wolen’s Los Angeles office. With an AV® Peer Review Rating by Martindale-Hubbell, and more than 19 years of civil litigation and arbitration experience, Mr. Eisenreich’s practice focuses on representing clients in the insurance, healthcare, and financial services industries. 

Mr. Eisenreich represents clients throughout the United States, appearing in many state and federal courts. He works on a wide range of litigation and regulatory matters, including those that have been brought by plaintiffs in a representative capacity, such as class actions.

Financial Services
Mr. Eisenreich’s litigation and arbitration experience includes representing clients in multi-district securities class actions, a wide variety of customer disputes, trade secret disputes, and disputes with agents and employees. 

Examples of his experience representing clients in the financial services industry include:

  • Represented client in a FINRA arbitration involving the alleged theft of trade secrets by a registered representative. Successfully obtained an injunction against the registered representative.
  • Represented a client in a FINRA arbitration involving a dispute arising from the client’s purchase, and subsequent sale of, a registered representatives’ business, and involving alleged violations of the registered representatives’ agreement not to compete with the client.
  • Defended a client in an arbitration involving allegations that the plaintiffs’ 412(i) Defined Benefit Plan was improperly structured in violation of various tax laws and Internal Revenue Service regulations.
  • Defended a client in complex insurance coverage/ securities fraud matter. The client had issued a policy providing “lease default” insurance. Multiple class actions, as well as individual actions, were brought against the insured for securities fraud.  These actions also contained claims that the client had aided and abetted the securities fraud.
  • Defended client in securities fraud class action brought in Federal District Court, Southern District of California.  The matter involved a successful assertion of a selling away defense.
  • Defended a client in an arbitration proceedings brought by agents contesting the control of, and commissions flowing from, a public entities’ deferred compensation plan. 

Examples of Mr. Eisenreich’s healthcare experience include:

  • Defended a contractor for a governmental healthcare entitlement program from claims that it was illegally excluding medical providers associated with the 1-800-GET-THIN marketing campaign from participation in the governmental entitlement program.
  • Represented a health maintenance organization in an arbitration brought by the entity’s agent in a dispute arising from the agency’s termination and claims for unpaid commissions.
  • Represented a client in an action brought by an agent challenging the legality of the client’s business practices with respect to high deductible small group health plans and employer funded supplemental wrap plans.
  • Defended several matters involving the denial of healthcare benefits.

Insurance and Reinsurance
Mr. Eisenreich’s insurance, insurance coverage, insurance bad faith, and reinsurance experience includes representing clients in class actions challenging insurers’ business and claims handling practices, insurance related contractual and business disputes, as well as defending clients against allegations of bad faith claims handling. In addition, he has extensive experience handling regulatory matters before the California Insurance Commissioner. 

Some examples of matters that he has handled include:

  • Represented several insurers in class actions brought by insureds challenging the practice of using computer software to estimate the value of property damage claims and the reasonableness of medical bills.
  • Represented an insurer seeking reinsurance recoveries for its settlement of coverage disputes involving breast implants and non-breast implant product liability claims.
  • Represented insurers and acted as defense liaison counsel in multi-insurer, multi-site, environmental coverage actions.
  • Defended an insurer’s underwriting practice of refusing to provide coverage for elderly pilots in certain classes of high performance aircraft.
  • Represented insurers in a number of disputes with their agents, including a putative class action brought by the insurer’s agents alleging that it was a breach of the agents’ agency agreements for the insurer to cease selling homeowners insurance following the Northridge Earthquake.
  • Represented an insurer in a number of first party bad faith actions involving alleged toxic mold.
  • Represented insurers in challenging insureds’ independent counsel’s defense bills.
  • Represented insurer in coverage dispute and bad faith action involving whistleblower claims under the Federal False Claims Act.

Mr. Eisenreich is admitted to practice before the United States District Court for the Central, Northern, Eastern and Southern Districts of California, the Eastern District of Michigan, and the Ninth Circuit Court of Appeals.


  • University of California, Berkeley, Boalt Hall School of Law, J.D., 1992
  • University of California, Davis, A.B., 1989

Articles & Publications

Professional Memberships

  • The State Bar of California
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