Andrew Dieffenbach, CPA, CVA, MBA

Andy Dieffenbach

“Cultivating and maintaining positive client relations leads to mutual satisfaction and success.”


617-738-5200 x272

Accounting, business valuations, tax planning and compliance services for privately held businesses, individuals, estates and trusts.

Andrew C. Dieffenbach, CPA, CVA, MBA has many years of experience in public accounting, providing services to all business entities, fiduciaries, nonprofit organizations and individuals. He works with clients across a broad range of industries, including retail, auto dealerships, real estate, technology, medical and professional services. He has particular expertise with complex partnership returns.

In addition to his tax work, Andrew is also a Certified Valuation Analyst (CVA), working with business owners and their team of trusted business advisors to determine or resolve questions of value.

Before joining Abrams Little-Gill Loberfeld PC, Andy worked as a tax manager with Rhode Island CPA firm, Jerold M. Weisman & Company.

  • University of Rhode Island, Bachelor of Science in Accounting and Master of Business Administration
  • American Institute of Certified Public Accountants (AICPA)
  • Massachusetts Society of Certified Public Accountants (MSCPA)