Doeren Mayhew is a $235 million tax, assurance and advisory firm headquartered in Troy, Michigan with 18 offices across the country and abroad. Founded in 1932, Doeren Mayhew is recognized as the 46th largest CPA firm in the U.S. and is positioned for successful future growth. If you want to join a rising firm that is consistently named among the 50 best-managed firms in the nation, this is the firm for you.