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CostaRothbort Accountants & Advisors

Our team

Your work stays with a partner.

Our partners bring decades of combined experience in audit, tax planning, forensic accounting and estate planning, and they lead every engagement personally.

Michael J. Costa, CPA, CCIFP, CCA

Michael J. Costa

CPA · CCIFP · CCA · Founding Partner

Michael advises closely held and family-owned businesses in construction, retail and wholesale, as well as professional service firms and high net-worth individuals. His work ranges from audit and tax to asset protection, business succession and estate tax planning.

He holds the Certified Construction Industry Financial Professional (CCIFP) and Certified Construction Auditor (CCA) designations, has been featured in Long Island Business News’ “Who’s Who in Accounting,” and is a former adjunct professor of accounting at SUNY Old Westbury. He regularly presents to bankers, attorneys and sureties.

BA, Queens College (CUNY)
AICPA · NYSSCPA · CFMA
Robert D. Rothbort, CPA, CFE, CGMA

Robert D. Rothbort

CPA · CFE · CGMA · Founding Partner

Rob advises privately held businesses, business owners and high-net-worth families, with experience across construction, real estate, warehousing, logistics, medical and dental practices, and law firms. His practice focuses on tax strategy, mergers and acquisitions, succession planning and corporate reorganizations.

As a Certified Fraud Examiner, Rob leads forensic investigations and provides expert testimony in business disputes, embezzlement cases, and trust and estate matters. His writing has appeared in Accounting Today, Newsday and Long Island Business News.

BBA, Hofstra University
AICPA · NYSSCPA · ACFE
Catherine Pollari, CPA, CGMA

Catherine Pollari

CPA · CGMA · Partner

Catherine handles tax compliance, planning and research on complex matters for individuals and businesses, and also provides accounting, consulting and assurance services.

She advises privately held and family-owned businesses, their owners and high net-worth individuals, with a background in construction and real estate.

BS Accounting, MS Taxation, St. John's University
AICPA · NYSSCPA

Firm administration

Here to help.

Melissa Horenstein, Office Manager

Melissa Horenstein

Office Manager

Melissa manages the firm’s day-to-day office operations, helping keep our team organized and responsive to clients. Often the first person clients speak with when calling or visiting, she provides a welcoming and helpful point of contact.

Her responsibilities include coordinating partner meetings, overseeing client onboarding and engagement paperwork, and assisting with billing and payment questions. Throughout tax season and extension periods, she coordinates documents, signatures, and filing requirements to help keep work on schedule.

Contact Melissa for
Scheduling · Billing and payments · Document requests · New client setup