Doeren Mayhew has been recognized by Callahan & Associates as the No. 1 credit union auditing firm in the nation for its second consecutive year in the 2025 Supplier Market Share Guide: Credit Union Auditors publication.

Based on the total number of credit union audits performed for credit unions $40 million and above in assets, the annual compilation spotlights the top-ranking firms in the United States. Over the last year, Doeren Mayhew performed audits for 366 credit unions, totaling over $447 billion in assets.

Doeren Mayhew attributes its continued growth over the last year to its acquisition of Miami-based credit union auditing firm Nearman, Maynard, Vallez, CPAs, P.A. in 2024, propelling the firm’s ranking to the lead spot.

“To achieve such a notable industry recognition is such an honor and a testament to our continued commitment to serving the credit union industry.” said John Murnane, practice leader of Doeren Mayhew’s Financial Institutions Group. “We look forward to continuing to prioritize and meet the needs of our clients, while remaining the leading credit union auditing firm.”

Doeren Mayhew has an extensive Financial Institutions Group practice, providing a range of audit, internal audit, accounting, regulatory compliance, lending review, tax and merger advisory services to hundreds of credit unions nationwide, ranging in size of up to nearly $22 billion in assets.