Marci D. Mitkoff is Of Counsel with Marks, O’Neill, O’Brien, Doherty & Kelly’s New York office.  She is admitted to practice in New York and New Jersey.  She is also a member of the New York State Medical Defense Bar Association.

Marci graduated from Brandeis University in 1985 with a bachelor’s degree in Political Science. She then attended Benjamin N. Cardozo School of Law, graduating in 1988.  During law school, Marci was a Samuel Belkin Scholar.

Since joining Marks O’Neill in 2015, Marci has focused her practice on the defense of medical professionals, nursing homes, contractors and aestheticians.  She has handled claims regarding premises liability, products liability and toxic tort.  Marci has extensive trial experience, having taken numerous favorable verdicts throughout New York City, Nassau County and New Jersey.

Marci lives in New Jersey with her husband and two children.  She enjoys reading, cooking and watching her children play sports.

Marci D. Mitkoff
Of Counsel / New York City

Phone 646-454-4871

Marci D. Mitkoff PDF


  • J.D., Benjamin N. Cardozo School of Law, 1988
  • B.A., Brandeis University, 1985

Bar Admissions

  • New Jersey
  • New York
  • U.S. District Court for the District of New Jersey
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York

Bar Associations

  • New York State Medical Defense

Practice Areas

  • Casualty Group
  • Healthcare & Catastrophic & Excess Loss
  • Construction Accident/Construction Defect

Representative Cases



New York City
10 Grand Central, 155 East 44th Street, Suite 2500, New York, NY 10017