Dmitriy Tishyevich - McDermott Will & Emery


Dmitriy Tishyevich focuses his practice on complex commercial litigation in federal and state courts.  He has a particular emphasis on healthcare litigation, and has extensive experience representing clients in lawsuits and arbitrations involving claims payment, provider contracting, and ERISA and Sherman Act issues that arise in disputes between payors and healthcare providers.  He has first-chaired two multi-week arbitration hearings, and has also second-chaired multiple federal trials and arbitrations. His other work includes antitrust, business tort matters, contract disputes, and product liability. In addition to healthcare work, Dmitriy also regularly represents clients in the pharmaceutical and private equity industries, among others.

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  • Represented a healthcare insurance company in multiple arbitrations filed by one of the largest for-profit hospital systems that alleged that insurer underpaid its contracted healthcare claims.  First-chaired three multi-week arbitrations hearings and achieved a complete defense victory in the only arbitration to reach a judgment; leveraged favorable results to drive a global resolution.
  • Represented a healthcare insurance company in a putative class action brought by substance abuse treatment facilities challenging the company’s reimbursement of out-of-network claims based on pricing supplied by a third-party vendor, including under antitrust and RICO theories. Successfully moved to dismiss the complaint in its entirety, including the antitrust claims with prejudice. Instead of amending their complaint, the facilities voluntarily dismissed.
  • Represented a health insurance company against a group of hospitals claiming over ten million dollars in underpayments for emergency services under Florida statutory and common law. After significantly narrowing claims through Rule 12 motions, achieved a complete defense victory at summary judgment.

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Harvard Law School, JD, cum laude, 2010
University of California, Berkeley, BA, with High Distinction and Honours, 2006

Second Circuit Court of Appeals
Third Circuit Court of Appeals
Fifth Circuit Court of Appeals
Seventh Circuit Court of Appeals
Eleventh Circuit Court of Appeals

New York