Denis McGuinness Partner

Denis McGuinness


Denis E. McGuinness, has been with the firm since 2011, and has been a partner since 2019. He graduated from the United States Military Academy at West Point (B.S. 1974) After his military service, he graduated from Texas Tech University School of Law (J.D. 1982) and was admitted in Texas in 1982, the United States District Court for the Northern District of Texas and the United States Fifth Circuit Court of Appeals in 1987. After working in private practice and business in Texas, he was admitted to New York in 1991 and the United States District Courts for the Southern and Eastern Districts of New York in 1992.


Since returning to New York in 1992, Denis has represented clients in medical malpractice, legal malpractice, civil rights, municipal and school liability, Labor Law and construction cases, premises liability, highway construction and design defects, products liability, trucking, and automobile and homeowner’s matters, as both panel and in-house counsel for two major carriers. He has also represented clients in commercial and contested estate matters. Denis has tried over 125 cases to verdict, including medical malpractice, general liability cases and criminal cases, including a capital murder case.

Practice Areas

  • Medical Malpractice
  • Legal Malpractice
  • Civil Rights
  • Municipal & School Liability
  • Labor Law and Construction Cases
  • Premises Liability
  • Highway Construction and Design Defects
  • Products Liability
  • Trucking, Automobile, Homeowner’s Matters
  • General Liability
  • Criminal
O'Connor McGuinness Conte Doyle
Oleson Watson & Loftus, LLP

Over 20 Attorneys & 60 Years Experience

White Plains • Manhattan