About

Grassi & Co. is a premier professional service organization specializing in accounting, auditing, tax, technology, and business consulting. Based in Manhattan, NY the firm has been ranked as the 23rd largest firm in the New York Metropolitan area by Crain’s New York Business and is among the top 10 largest firms on Long Island by Long Island Business News. The firm has offices in Long Island and North Carolina, and includes 26 partners and a staff of nearly 200.