Grassi & Co.: Grassi & Co. is a premier professional services organization specializing in accounting, auditing, tax, technology, and business consulting. Grassi & Co. has been ranked as the 17th largest Accounting Firm in New York by Crain’s New York and the 7th largest by Long Island Business News. It was also ranked the 70th largest by INSIDE Public Accounting. Accounting Today ranked Grassi & Co. as the 73rd Top Accounting Firm in the U.S. They have offices in Manhattan, Long Island, White Plains, NY and Park Ridge, NJ as well as internationally through its association with Moore Stephens International. Grassi & Co. specializes in professional services for the Not-for-Profit, Construction, Architecture & Engineering, Financial Services, Private Equity, Life Sciences, Manufacturing & Distribution, Retail, Technology, Media & Telecommunication, Transportation, Energy & Natural Resources, and Healthcare industries, among others.