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2018 GPDC Instructors

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Drummond Kahn, MS, CIA, CGFM, CGAP

Drummond Kahn trains auditors from his 27 years of government audit experience, including leading audit functions at the state and local levels.  An accomplished trainer and auditing faculty member in two graduate schools, Drummond serves on the faculty of the International Institute and the Government Audit Training Institute of the Graduate School USA.  He joined the auditing profession in 1990. His auditing roles include Chief of Audit Services for the Oregon Department of Transportation, Director of Audit Services for the City of Portland, and State Audit Administrator for the Oregon Secretary of State Audits Division. Drummond began his career serving over five years in the U.S. Government Accountability Office.

He served as National President of the Association of Local Government Auditors (2012-13), received AGA's Frank Greathouse Distinguished Leadership Award and served as a member and now chairs the Comptroller General's Advisory Council on Government Auditing Standards (2009-2020). The IIA’s American Center for Government Auditing recognized Drummond as one of the 15 Most Influential Professionals in Government Auditing. Drummond holds a Master's degree from the University of Oregon and a Bachelor's degree from Whitman College.

He has trained auditors extensively in North America and overseas, speaking to groups ranging from Association of Government Accountants and Institute of Internal Auditors chapters and conferences to Lanzhou University (China), and the Reims Management School (France).  He has presented to regional, national, and international conferences on auditing and governance topics.  Drummond has extensive experience presenting to audit offices on topics including performance auditing, performance measurement, audit writing, and reporting audit results.

Drummond Kahn
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Amin helps organizations enhance their collective project intelligence by coaching and training them using the latest emerging practices of project management including AGILE. Currently, he is working on an Agile Transformation Project at a large government organization in Los Angeles, California. His most recent clients include Los Angeles County Information Services Department (ISD), California Institute of Technology, IPAC, and Platinum Resources Group. Also, he teaches PMP® Examination Preparation Workshop in the greater Los Angeles area and Metro Manila, Philippines. Further, he was an adjunct professor at Shidler College of Business, University of Hawaii, Manoa specializing in Advanced Auditing course. Previously, he was the Director of IT Audit at Hawaiian Electric Industries, Honolulu, Hawaii.

Amin’s diverse project management experience includes working as a Cyber Security Assessment Team (CSAT) Lead Consultant at San Onofre Nuclear Generating Stations (SONGS), California and an Organization Change Management Coach for the IT department of the State of Hawaii.


He holds an MSBA in IT Auditing from California State Polytechnic University, Pomona, and an MBA from Thunderbird Global School of Management, Glendale, Arizona. Also, he receives his undergraduate degree in business administration from California State University, Los Angeles. Further, he attended Seikei University, Tokyo, Japan.

Amin is an author of two books: Karate Project Management (available on and PEPS – PMP Examination Preparation Strategies. He is currently writing his third book: “AGILE DONE WELL”.

Amin practices traditional Japanese Karate and holds a first black belt degree from SKIF, Japan. He is also a finisher of Honolulu Marathons. Amin speaks conversational Japanese and Chinese.

Amin Leiman

John H. Lynskey, CGFM, CPA

John H. Lynskey, CGFM, CPA of AGA’s Washington DC Chapter is the controller and deputy division director for
financial management at the U.S. National Science Foundation (NSF). His responsibilities include fiscal stewardship of NSF’s daily financial operations. This includes budget execution and funds control, financial statements and reporting, accounting operations, and grant payments and administration. As controller of a seven-billion-dollar CFO Act agency, he leads NSF programs for internal control, improper payments, financial audit and strategic financial initiatives. He also oversees NSF’s cloud-based FedRamp certified financial system and spearheads grantee financial outreach to NSF’s 1,700 institution customers. Under his 18 years of stewardship, NSF has achieved sustained success in obtaining “clean” audit opinions and in financial reporting excellence.


Prior to joining NSF, John served with the U.S. Secret Service for eight years where he developed the Secret Service's first financial statements and a budget model for protective events under the CFO and in protective operations. He was also part of the security teams for events such as political conventions, UN General Assemblies and the Olympics. Prior to his federal government service, he worked in public accounting for Deloitte and other firms. He holds a degree in accounting from James Madison University.

John has been very active in AGA’s Washington DC Chapter, serving in many positions. At the national level, he served on AGA’s Finance and Budget Committee for six years and was a member of the Professional Certification Board and Accountability Work Group. Over the last seven years, he has been a member of AGA’s National Executive Committee (NEC) where he has served as national treasurer, a senior vice president and then president-elect.

John resides in Maryland on the Chesapeake Bay with his family where they enjoy bay breezes and activities and the salt air life.

John Lynskey
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Doreen Crisostomo, Ph.D., CGFM, CFE, CICA

Doreen Crisostomo is an associate professor of accounting at the University of Guam and has worked in government service for over 25 years. She currently serves as a member of the finance and budget committee and previously served as the senior vice president of the National Association of Government Accountants.

She is a member of various professional organizations, including the Association of Government Accountants, Government Finance Officers Association, the Institute of Internal Controls, and the Association of Certified Fraud Examiners. She has published peer-reviewed articles on topics of government accounting, accounting systems and pedagogy.

Doreen earned her Bachelor of Business Administration in Accounting from the University of Guam, Master of Business Administration in Accounting from University of Phoenix, and Ph.D. in Organization and Management from Capella University. She possesses multiple certifications as government financial manager, internal control auditor, and fraud examiner.

Doreen Crisostomo
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Billy Morehead, Ph.D., CPA, CGFM

Since August 2011, Billy has been a Professor of Accountancy at Mississippi College teaching primarily Governmental, Advanced, and Accounting Information Systems classes at the undergraduate and graduate levels. Billy is a highly sought after national and international speaker on a variety of topics including Fraud, Corruption, Ethics, Internal Control, Leadership, International Accounting Standards, GASB, GAO & OMB updates, and Government Financial Management.


In June 2011, Billy retired from the State of Mississippi after 27 years of service in various roles at the State Auditor's Office; Department of Finance and Administration; Department of Mental Health; and Delta State University including serving as the Chair of Accountancy, Computer Information Systems and Finance, Interim Dean for the College of Business and Vice President for Finance and Administration.


Billy has been a member of the Jackson AGA Chapter since 1986 and has served the chapter in numerous roles including Chapter President. Billy has served AGA as both member and chair of several national committees, as Regional Vice President, as Senior Vice President for Regional Services, as National Treasurer, and National President.


Billy has been a member of the Mississippi Society of CPAs and AICPA since 1987. Billy earned his bachelor's and master's degrees in accountancy from Delta State University (1984) and Millsaps College (1995), respectively, and earned his doctorate in International Development from the University of Southern Mississippi (2007). Billy and his wife, Audrey, live in Madison and are members of First Baptist Church, Jackson.

Billy Morehead
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