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Alyson Terwilliger, CPA, CGMA






Alyson joined Sheehan in July 2006.  She graduated Summa Cum Laude with her Bachelor of Science Degree in Accounting in May 2006 from St. Joseph’s College.  Alyson is a Certified Public Accountant in New York State and is a member of both the American Institute of Certified Public Accountants (AICPA) and the New York State Society of CPA’s (NYSSCPA) and holds the Chartered Global Management Accountant (CGMA) designation from the AICPA and the Chartered Institute of Management Accountants.  In May 2014, Alyson was awarded the "Top 30 under 30 Young Professionals Award" by the Huntington Chamber of Commerce.

During her time with Sheehan & Company, Alyson has worked closely with businesses, nonprofit organizations and individuals.  She provides a broad range of professional services, including tax preparation, planning, audit and financial statement services, and client accounting services.  She is often involved with her client’s problem-solving decisions.


Saint Joseph’s College, BS in Accounting

Community Involvement

New York Society of CPAs (NYSSCPA) – member

American Institute of Certified Public Accountants (AICPA) – member

The most important thing in both good leadership and in client service is truly caring.  To provide superior client service, you must care about your clients – you can’t put a price on professional service providers that have a genuine interest in your success and well-being.  What we offer our clients extends beyond our extensive knowledge.  That is what separates us from our competitors.



Financial Statement Reporting  

Tax Return Preparation

Tax Planning and Projections  


Law Firms


Medical and Health

Local Governments

Governmental Entities


Professional Services

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