Professionals
- Brian Y. Lopez
Director - Ryan A. Merryman
Managing Consultant - Daniel P. Dehner
Senior Consultant
- Ronald L. Durkin
Senior Marketing Manager - Maryellen K. Sebold
Managing Director - Donna Tamura
Managing Director
Ronald L. Durkin is a Senior Managing Director of Durkin Forensic, Inc. He founded Durkin Forensic in 2008 after retiring from KPMG LLP where he was the National Partner in charge of fraud and misconduct investigations and served as Western Region forensic practice leader. Ron’s career spans 35 years and includes more than 10 years as a special agent with the FBI. Ron is a Certified Public Accountant with a Certification in Financial Forensics, a Certified Fraud Examiner, and a Certified Insolvency and Restructuring Advisor. In 2007, he received the first-ever lifetime achievement award in Forensic Litigation Services from the American Institute of Certified Public Accountants. Ron holds a B.S. in Accounting and an MBA (with emphasis in Accounting) from California State University, Sacramento.
Brian Lopez is a Director of Durkin Forensic, Inc., at its Los Angeles
office. Previously, Brian was a forensic investigator for KPMG LLP, where
he participated in fraud investigations involving clients in a broad range of
industries. He has extensive experience with gathering and interrogating
electronic data and has created a variety of complex databases to assist in
the analysis of all types of investigations. Because of his integral role in
the development of KPMG LLP’s global forensic data analysis tool,
Brian was appointed a member of the firm’s National Forensic Data
Analysis Working Group. He was also the West Region coordinator for
KPMG LLP’s journal entry tool and an international instructor for its
data-analysis software. A Certified Fraud Examiner, Brian holds a B.S. in
Industrial Engineering from the University of Washington.
Daniel Dehner is a Senior Consultant with Durkin Forensic, Inc., at its San Diego office. As the firm’s Practice Manager, he is also responsible for its day-to-day operations. Prior to joining Durkin Forensic, Dan was a senior associate in the audit department at KPMG LLP, where he performed audits for large Securities and Exchange Commission clients as well as for a number of nonprofit, public- and private-sector organizations in the fields of consumer markets, healthcare, manufacturing and real estate. He also served as a national instructor and was the senior in charge of recruiting for his KPMG LLP office. A Certified Public Accountant and a Certified Fraud Examiner, Dan holds a B.S. in Business Administration from California Polytechnic State University, San Luis Obispo.
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Maryellen Sebold is a Managing Director with Durkin Forensic, Inc., at its Los Angeles office. A Certified Public Accountant and Certified Insolvency and Restructuring Advisor, Maryellen recently earned the Certified in Financial Forensics credential from the American Institute of Certified Public Accountants. She has had more than 20 years of experience in the areas of forensic accounting and fraud investigations, litigation consulting, bankruptcy, and corporate restructuring. For eight years prior to joining Durkin Forensic, Maryellen was a Director in the Litigation and Forensic Consulting Services Group of Hemming Morse, Inc., and in charge of its Los Angeles office. Her previous experience includes working with large public accounting firms. Maryellen received her B.S. in Accounting from Ithaca College in New York.
Donna Tamura is a Managing Director with Durkin Forensic, Inc., at its Los Angeles office. She has 20 years of combined experience in public and private accounting, providing forensic investigative, financial and economic consulting services and has been a pioneer in introducing forensics to audit applications. By linking forensic thinking and procedures with electronic data analysis, Donna has paved the way for internal and external auditors, attorneys and others to identify the attributes of fraud that may be present in a company’s books and records. Prior to joining DFI, Donna was a Managing Director with KPMG LLP in their forensic practice. She is a Certified Public Accountant and holds the AICPA’s Certified in Financial Forensics credential. Donna received her Bachelor of Business Administration and a Master of Accounting degrees from the University of Hawaii.
