About Thomas

Thomas O’Reilly is an Audit Partner in the Firm’s Roseland, NJ office and a member of the Real Estate Industry Group.

Mr. O’Reilly has over 35 years of experience in public accounting, with expertise in the areas of real estate, construction, multi-national foreign entities in their US activities, not-for-profits, pensions and 401(k) audits.

Prior to joining Marcum, Mr. O’Reilly was a Partner with Cornerstone Accounting Group LLP.

Professional & Civic Affiliations

  • New Jersey State Society of Certified Public Accountants (NJSSCPA)
  • American Institute of Certified Public Accounts (AICPA)
  • New York State Society of Certified Public Accountants (NYSSCPA)
  • Massachusetts Society of Certified Public Accountants (MSCPA)

Subject Matter Expertise

Assurance Services
Employee Benefit Plans

Practice Focus

Real Estate
Multi-National Foreign Entities


Bachelors of Science, Accounting
M.B.A. in Finance
Seton Hall University