Robert Giambalvo, CPA, CGMA

Schedule Consultation Learn About Our Services

Robert Giambalvo, CPA, CGMA
Shareholder and President
Tel. #: 631-321-8000 ext. 208


Mr. Giambalvo is the founder and president of GS&Co.  In this capacity, Mr. Giambalvo oversees the firm’s operations, manages business development, and plays a vital role in developing strategy on the firm’s growth, setting policy, and advising clients.  In the practice development arena, he has been a driving force in identifying new business opportunities to enhance client development, and increasing revenue. Along with his firm-wide responsibilities and practice development activities, Mr. Giambalvo maintains client relationships in a broad range of industries, including hospitality, professional services, management companies, construction, manufacturing, distribution and employee benefit plans.  

In addition to providing the requisite audit and accounting services, his expertise includes: providing tax planning and specialized consulting to business entities; advising clients on strategies to enhance business profitability and continuity; developing creative financing arrangements to assist clients in growth and expansion; and consulting financially troubled companies on behalf of lenders, creditor committees, and trustees.  Mr. Giambalvo has also provided testimony in court proceedings on various business matters.

Under Mr. Giambalvo’s leadership, the firm has experienced consistent growth and expanded client service in diversified industries.  In addition, his innovative business philosophy promotes  a professionally rewarding environment that enables the firm to attract highly competent staff and high quality clients ranging from sole proprietors to multi-national enterprises.

Professional and Community Involvement

Mr. Giambalvo  is a member of the American Institute of Certified Public Accountants, and the New York State Society of Certified Public Accountants.  He is also a Diplomat of the American Board of Forensic Accounting, and an associate member of the Association of Certified Fraud Examiners.  Mr. Giambalvo was a member of the Board of Directors of Hampton State Bank until its merger with Bridgehampton National Bank,  and currently serves on the Advisory Board of The First National Bank of Long Island.


Mr. Giambalvo graduated from Hofstra University with a Bachelor of Science Degree in Business Administration in 1983.