For over 30 years, AVM DeMars CPAs, LLP has been a leading provider of accounting, tax and consulting services to individuals and the business community. AVM DeMars CPAs, LLP is a mid-sized accounting firm located in central Nassau County. The firm, consisting of professional and administrative staff, has received another unqualified opinion from an independent Peer Review Firm of its system of quality control for its accounting and auditing practice as required by the Peer Review Board of the American Institute of Certified Public Accountants.