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Dennis J. Regan, CPA





Direct Dial: (203) 944-8709
Fax: (203) 712-1409

Areas of Expertise

Distribution, Manufacturing, Retail, Accounting & Auditing


General Experience Highlights

As an audit partner with BlumShapiro, Dennis has over 30 years of experience working with privately held businesses and their owners. His wide range of clients includes a focus on the manufacturing, distribution and retail industries and on non-profit organizations.

Dennis served as engagement partner to the Financial Accounting Foundation, the standard-setting body of the accounting profession, for ten years before rotating off to satisfy self-imposed regulatory requirements.

Dennis practiced with PricewaterhouseCoopers for nine years before he joined Cahill, Larkin & Company as a partner. After becoming managing partner of Cahill, he merged the firm of approximately 60 personnel, with offices in Connecticut and New York City, with McGladrey & Pullen in 1989. Dennis was a partner in McGladrey & Pullen’s New Haven office for 20 years before joining BlumShapiro in 2009.

Professional Education

  • Manhattan College ─ Bachelor of Science in Accounting

Professional Organizations and Activities

  • American Institute of Certified Public Accountants (AICPA)
  • Connecticut Society of Certified Public Accountants (CTCPA)
  • New York Society of Certified Public Accountants (NYSCPA)
  • Greater New Haven Chamber of Commerce
    • Past Chairman
    • Board of Directors
    • Executive Committee
    • Finance Committee



Advisors | Auditors | Consultants | CPAs - Blum Shapiro is one of the premier public accounting firms in the northeast and a Top 100 CPA Firm in the U.S. Our professionals serve businesses, individuals and organizations in Boston (MA), Hartford (CT), Cranston (RI), Shelton (CT) ,Quincy (MA) and Newton (MA) with audit, tax and business consulting services. Our firm has developed practice areas in automotive, construction, education, government, healthcare, hospitality, manufacturing, nonprofit organizations and professional service firms. New Haven CT, Fairfield CT, Norwalk CT, Waterbury CT.