About Dennis

Dennis Hynes is a partner in Marcum’s Accounting Services division providing assurance, tax, and consulting services to clients who operate in the construction, manufacturing, service, real estate, and food & beverage industries.

Dennis has worked diligently with his clients to assist with financial reporting, preparing financial statements, audits, reviews, and tax planning strategies that take advantage of his extensive industry knowledge.

He has provided assurance and consulting services to construction entities, including both the general contractor and specialty sub-contractors. He also provides consulting related to revenue recognition for long-term contracts, job cost allocations, benchmarking, overhead rate analysis, and projections.

Dennis is active in his local community and works with Contractors For Kids and Cohen’s Children Hospital.

He joined Marcum in 2020 after the Firm merged with Castellano, Korenberg & Company.

Professional & Civic Affiliations

  • American Institute of Certified Public Accountants (AICPA)
  • New York State Society of Certified Public Accountants (NYSSCPA), Nassau Chapter
  • Chartered Global Management Accountants
Practice Focus

Audit & Accounting
Tax Compliance
Tax Planning


Bachelor of Science, Accounting
State University of New York, Oneonta