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Anthony P. Mariani CPA






Anthony P. Mariani, CPA has over thirty-five years of accounting and auditing experience working with privately held and publicly held middle market companies in a variety of industries including textile, construction, manufacturing, retail, consumer products and distribution, hospitality, professional services, software, media, and technology companies.


Anthony also has experience on governmental entities and not-for-profit client engagements. Anthony has participated in all phases of client services, including financial statement audits, sales audits, Sarbanes Oxley internal control audits, single audits, compilation and reviewed financial statement engagements and mergers and acquisition work including purchase transactions and the due diligence process.


Anthony is also a specialist in auditing of employee benefit plans. In addition, he supervises our back-office bookkeeping and outsourced accounting services for several of our clients.


Prior to joining Sheehan & Company in 2010, Anthony spent over fourteen years with an international accounting and consulting firm specializing in audits of public and privately owned middle market companies.


Anthony's previous clients have included private equity owned portfolio companies, retail jewelry, apparel and supermarket chains, construction contractors and developers, apparel, equipment, consumer products and food distributors, non-profit organizations, and an auto dealership, among others.


Dowling College, BS Accounting

Long Island University, MS Taxation


A member of the American Institute of Certified Public Accountants and the New York State Society of Certified Public Accountants 

Community Involvement

Knights of Columbus, Smithtown Chapter - Financial Secretary

Attorney & Accountants Networking Group - President

Sayville Schools – Site-Based Team / Roundtable Representative

At Sheehan, it is not just helping our clients grow their businesses and be successful, it is allowing our staff the opportunity to grow their careers and be the best they can be and reach their full potential while having the ability to fulfill family and personal commitments. We accomplish this by providing exceptional service to every client where other firms may concentrate on their largest clients; we concentrate on all clients. We pride ourselves on understanding that to be a most trusted advisor we must provide exceptional client service which is the best reward to our clients. This serves the best interests of our firm as most of our referrals for new business come from existing clients or trusted professionals that know us well and have worked with us before.



Financial Statement Reporting  

Tax Return Preparation

Tax Planning and Projections  

Estate and Financial Planning

Mergers and Acquisitions

Litigation Support




Law Firms


Professional Services  

Real Estate


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