Grassi & Co is an accounting and consulting firm that provides services to clients in various industries, including healthcare, real estate, financial services, and not-for-profit. The company was founded in 1980 and is headquartered in New York, New York. Grassi & Co offers a range of services, including audit and assurance, tax planning and compliance, risk management, and technology consulting. The company has additional offices in Jericho, New York, and Park Ridge, New Jersey.