Mark J. Ackerman CPA, TEP, AEP

Partner | New York-Long Island

Professional Experience

Mark J. Ackerman is a Partner of Prager Metis CPAs, a member of Prager Metis International. Mark has more than 40 years of experience in the accounting industry.

Due to his expertise, Mark has developed a diverse client base that includes real estate, family planning, insurance brokers and underwriters, construction contractors and staffing and court reporting agencies.

In addition to his focus on new business and client development, over the past two years, he has led the Long Island office in developing the family planning, estates, trusts and guardianship accounting areas for the firm.

Mark built a solid practice over four decades on the strength of his work ethic, integrity, and responsive service. He has an ongoing commitment to provide his clients with the best possible service and personal attention.


Professional Affiliations

  • American Institute of Certified Public Accountants
  • New York State Society of Certified Public Accountants
  • Affordable Housing Association of CPAs
  • Estate Planning Council of Nassau County - Board of Directors
  • Society of Trusts & Estate Practitioners (STEP)
  • NY State Broker License in Life, Accident, Health & Travel Insurance

Civic Affiliations

  • Contractors for Kids Board of Directors


  • BS, Accounting, St. John’s University, New York

Insights & Presentations

LIBN Ones to Watch - March 2015

Newsday People on the Move - October 2013


Mark Ackerman Honored with Long Island Business News' Business & Finance Award 2016

Mark Ackerman Sworn onto Board of Directors of Estate Planning Council of Nassau County