David Geronemus

David Geronemus, Esq.

JAMS Mediator, Arbitrator and Referee/Special Master

Case Manager
Christiane Catoe
T: 212-607-2780
F: 212-751-4099
620 Eighth Avenue, 34th Floor, New York, New York 10018


David Geronemus is one of the most respected and sought after dispute resolution professionals. He has been a full-time neutral with JAMS since 1994. A former law clerk to Supreme Court Justice Potter Stewart, Mr. Geronemus has taught negotiation and alternative dispute resolution on an adjunct basis at Yale and Columbia Law Schools.

Mr. Geronemus has settled hundreds of cases, including many involving insurance coverage and reinsurance matters.

Representative Mediations

  • A complex insurance coverage dispute that involved multiple insureds and insurers; the underlying mass tort litigation arose out of the sale of certain prescription drugs
  • A coverage dispute arising under an errors and omissions policy for a government contract involving the provision of claims handling services
  • A coverage dispute involving multiple insurers that arose out of class actions alleging defective building materials
  • A dispute involving insurance coverage under a fiduciary liability policy for the president of a homeowner's association
  • A dispute regarding insurance coverage for payment defaults in a securitized portfolio of automobile leases
  • A dispute under a property insurance policy involving the loss of natural gas
  • Coverage disputes arising out of construction projects
  • Coverage issues under a liability insurance policy arising from an insured's alleged failure to cooperate
  • Disputes arising out of the sale of life insurance policies
  • Disputes involving issues of officers' and directors' liability coverage
  • Disputes involving questions of coverage for alleged attorney malpractice policies
  • Disputes under disability insurance policies
  • Disputes under reinsurance treaties
  • Several disputes involving coverage for asbestos liabilities. These cases have arisen in both bankruptcy and non-bankruptcy settings. One case involved two insureds and over 30 insurers.
  • Several environmental insurance coverage disputes, including a case involving over 100 sites, multiple insurers, and estimated investigation and remediation costs in excess of one billion dollars
  • Recognized as Best Lawyers' New York City "Lawyer of the Year" for Mediation, 2022
  • Designated with the highest level ranking (Band 1) in Mediation, Chambers USA America’s Leading Lawyers for Business, 2016-2022
  • Recognized in Who's Who Legal in the practice area of Mediation, 2016-2019
  • Recognized as one of seven most highly regarded individuals in the U.S. of Who’s Who Legal in the practice area of Insurance and Reinsurance, 2015
  • Recognized as a Best Lawyer, ADR Category, Best Lawyers in America, 2007-2022
  • Recognized as a New York Super Lawyer by Law & Politics every year since 2007
  • Registered Mediator, United States Bankruptcy Court for the Southern District of New York

ADR Profiles

  • "David Geronemus," 2018 ADR Champions, The National Law Journal, June, 2018
  • Mediator, JAMS, 1994-present
  • Partner, Donovan, Leisure, Newton & Irvine, Washington, D.C. and New York, 1990-1994
  • Associate and Partner, Rogovin, Huge & Schiller, Washington, D.C., 1984-1989
  • Law Clerk, Supreme Court Justice Potter Stewart, 1983-1984
  • Law Clerk, Chief Judge Collins Seitz, U.S. Court of Appeals, 3rd Circuit, 1982-1983
  • J.D., New York University Law School, 1982 (Senior Articles Editor, N.Y.U. Law Review; N.Y.U. Alumni Association Award; John Norton Pomeroy Prize, the Leonard M. Henkin Prize; Member, Order of the Coif)
  • M.B.A., Columbia University Graduate School of Business, 1980 (Roswell C. McCrea Prize, Beta Gamma Sigma Honor Society)
  • B.A., Wesleyan, 1975




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