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Photo of Zenon  Zabinski, PhD


Zenon Zabinski specializes in economic analysis of competition and antitrust issues. He has broad experience applying both reduced form and structural econometric methods to examine the strategic responses of firms to changes in market conditions and their effect on consumers.

Within the healthcare industry, Dr. Zabinski has worked on a variety of merger and monopolization cases involving payers, providers, and pharmacy benefit managers. His prior engagements include analysis of competition in other industries, including television broadcasting, mobile telecommunications, federal government contracting, and e-commerce.

Dr. Zabinski has conducted research in industrial organization, healthcare economics, and public policy. His writings have appeared in the American Journal of Health Economics, Antitrust Law Journal, and CPI Antitrust Chronicle and have been featured in the New York Times.


PhD, Economics, Northwestern University

MA, Economics, Northwestern University

BS, Computer Engineering, Santa Clara University

Selected Work

Selected Experience

  • On behalf of Express Scripts, supported the expert in analyzing possible concerns related to horizontal effects of its proposed merger with Cigna in markets for pharmacy benefit management services and Medicare Part D insurance. 
  • On behalf of the Department of Justice (DOJ), assisted experts in the DOJ’s investigation of Sinclair Broadcast Group’s proposed $3.9 billion deal to acquire Tribune Media. 
  • On behalf of UnitedHealth’s health services subsidiary Optum in its acquisition of DaVita Medical Group, assisted the expert with presentations and submissions to the Federal Trade Commission and several state attorney general offices addressing potential horizontal and vertical concerns arising from the proposed transaction. 
  • Working on behalf of the Federal Trade Commission, provided support to the expert in analyzing the competitive effects of a Texas Medical Board rule requiring that physicians meet face to face with patients before offering certain services such as prescribing medication via telemedicine. 
  • On behalf of Humana in connection with its proposed merger with Aetna, provided support for responses to the Department of Justice’s second request, analyzed likely competitive effects and barrier to entry and exit in the sale of Medicare Advantage products, and analyzed likely competitive effects in the sale of individual health insurance on public exchanges.
  • Supported testifying expert on behalf of the Federal Trade Commission in its proceedings seeking to block Cabell Huntington Hospital’s acquisition of St. Mary’s Medical Center in Huntington, WV. 
  • Supported testifying expert in cases against major sports organizations for monopolization of television and internet broadcast rights to live sporting events. 

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