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Seth J. MacArthur, ESQ.

Seth1Seth J. MacArthur, Esq. is the Managing Attorney of the Law offices of Michael S. Lamonsoff, PLLC. Mr. MacArthur has been practicing for over 16 years, developing his legal skills and applying them toward the management of a successful legal practice.

Education and Accomplishments

Mr. MacArthur is a graduate of the State University of New York at Oneonta where he received a Bachelors of Science in Political Science. He received his Juris Doctor degree from Albany Law School where he was a member of the Student Government as well as various Student and Athletic Organizations.

Practice Areas

  • Construction Accidents
  • Premises Liability
  • Contracts
  • Personal Injury
  • Arbitrations and Mediations

Bar Admissions

  • New York State
  • Federal Court Eastern District


  • State University of New York at Oneonta
  • Albany Law School


  • New York State Bar Association
  • Richmond County Bar Association



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