Dennis S. Neier

Independent Senior Advisor

“My clients count on my decades of experience first as an auditor and then as an advisor, specializing in litigation support, forensic accounting and alternative dispute resolution. Client service is my top priority.”

Dennis S. Neier has more than 50 years of experience in accounting and business consulting, having served as partner at a “Big Four” accounting firm and partner and senior executive at various national accounting and advisory firms. Dennis is an independent senior advisor to PKF O’Connor Davies’ Forensic Accounting and Litigation Consulting practice. He specializes in providing litigation consulting, forensic accounting, alternative dispute resolution and expert witness services to law firms and in-house counsel.

Dennis has consulted for cases involving individuals and companies with an emphasis on breach of contract or fiduciary duty, royalty disputes, business interruption, purchase and sale agreement disputes, lost profits, economic damages, fraud, mass claim cases and white-collar crime. In addition, he has considerable expertise in performing fraud investigations for not-for-profit organizations and in serving as an arbitrator and mediator.

Dennis was an adjunct professor at the City University of New York and New York University and has lectured at professional organizations with which he is involved. He has coauthored the chapters on personal financial statements and forensic accounting and litigation consulting services for the “Accountants’ Handbook” and a chapter on fraud detection and investigation for “The Encyclopedia of Nonprofit Management, Leadership, and Governance.”

Professional Affiliations and Civic Involvement

  • American Institute of Certified Public Accountants (AICPA)
    • Member, Management Consulting Services Division
    • Former Member, SEC Practice Section Executive Committee
    • Former Member, Advanced Litigation Services and Fraud Conference Steering Committee
  • New York State Society of Certified Public Accountants (NYSSCPA)
    • Former Chairman, Financial Accounting Standards Committee
    • Former Chairman, Specialized Accounting Principles Committee
    • Former Member, Litigation Consulting and Support Services Committee
    • Former Member, Personal Financial Planning Committee
    • Former Member, Professional Ethics Committee
  • American Arbitration Association (AAA)
    • Commercial Panel of Neutrals
  • American College of Forensic Examiners (ACFE)
  • American Board of Forensic Accounting (ABFA)
  • International Institute for Conflict Prevention & Resolution (CPR)
    • Commercial Panel of Neutrals
  • New York State Unified Court System
    • Neutral
  • American, New York State and the Massachusetts Bar Associations


    • Certified Public Accountant (New York, Louisiana, Massachusetts)
    • Certified in Financial Forensics (CFF)