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 About the Board





Mushtari is a Senior Auditor, she joined SRI in August 2014. In her previous experience she worked at Lawrence Livermore National Laboratory for four years as an Internal Auditor and worked on government contract compliance and operational evaluation. Prior to that she had worked at various consulting firms in Bay Area for two plus years with concentration in SOX implementation and process improvement. Mushtari is a licensed CPA with California Board of Accountancy, has certification in Control Self-Assessment, and Certified Information Systems Auditor in addition to two bachelors, one in Accountancy from SJSU and second in Economics from an Indian University.


VP Programs

​Cheryl is a Senior Auditor in the Office of Audit, Compliance and Privacy. She joined the department in March 2015 and performs financial, operational and compliance audits for Stanford Hospital & Clinics and Lucile Packard Children’s Hospital. Prior to joining Stanford, Cheryl was a Senior Auditor at Safeway Inc. in Pleasanton. Cheryl has over twenty five years of internal audit, public accounting and industry experience. Cheryl also has extensive experience in the contracts administration and supply chain processes.

Cheryl received her Bachelor of Arts Degree in Economics at UCLA. She is a Certified Public Accountant (CPA), Certified Fraud Examiner (CFE) and Certified Internal Controls Specialist. She is a member of the American Institute of Certified Public Accountants (AICPA), Institute of Internal Auditors (IIA) and Association of Healthcare Internal Auditors (AHIA). Cheryl is an active member on the Board of Directors for the Northern California East Bay Chapter of the Institute of Internal Auditors (NCEB-IIA) and has served roles as the Vice President of Programs, Hospitality Chair and International Conference Secretary.

VP Seminars

​Ahmad graduated from California State University, East Bay and holds a Bachelor of Science in Business Administration (Accounting Option). He has worked in Chevron’s Upstream Accounting (Joint Interest and Revenue & Royalty) prior to transferring to Corporate Audit. He has worked on various internal (finance, operational, corporate compliance, SOX), contractor, and joint venture audits in U.S. and outside of U.S. (e.g., Canada, Argentina, UK, South Africa, Pakistan, Singapore, and Australia).

Ahmad holds various certifications (CIA, CCSA, CRMA, and CFE) and has previously served as Academic Relations Chair and Certification Chair for NCEB-IIA.


​Catherine works in Chevron’s Corporate Audit department in San Ramon, CA as an internal auditor. Since joining the department in 2015, she has worked on various financial, procurement, compliance and third party audits in the U.S. and Latin America. Prior to becoming an auditor, she worked in Chevron’s financial function for eight years and in accounting roles for the U.S. Forest Service for five years. Her non-audit experience includes cash forecasting and positioning, financial analysis and reporting, business planning, compliance and internal controls coordination, and SOX testing. She holds a BS in Accounting from California State University Chico.
Assistant Treasurer



John Driscoll

Past President

(June 2016 - May 2017

​John joined Chevron in 1985 and transferred to Chevron’s Corporate Audit department in 2004. He currently serves as an IT audit Supervisor for Chevron. John has had the opportunity to conduct IT audits in various Chevron international locations including Amsterdam, Canada, England, Indonesia, Kazakhstan, Russia, Scotland, South America, Wales and many locations in the United States.

John is a Certified Information Systems Auditor (CISA) and holds Bachelor of Arts degree in Economics from California State University Hayward. He has previously served a term as Vice President of Seminars and as a Governor.

John stated “As your President my goal is to team with our board to promote the value that internal audit professionals add to their organizations. We will continue to provide comprehensive professional educational and other professional practice guidance for our Chapter members. Additionally we will support the future of internal audit through engaging and supporting the local Universities and Student Associations.”

Past President

(June 2015 - May 2016

​Ruth is a supervising auditor with Chevron’s Corporate Audit department in Concord with responsibility for managing all aspects of auditing and consulting for North America Downstream (Manufacturing, Marketing, Lubricants and Oronite) activities. She has 12 years of audit experience. During her tenure in Audit, Ruth has had the great opportunity to travel to many locations to audit various Chevron divisions including Bermuda, South Africa, Scotland, Kazakhstan, Australia, the Philippines and many locations in the United States.

Ruth is a Certified Public Accountant (CPA), a Certified Internal Auditor (CIA) and Certified Fraud Examiner (CFE). She holds an MBA in Finance and a BA in Accounting from California State University Hayward. Ruth has previously served two terms as VP of Seminars and as a Governor.

Tracy West

Past President

(June 2013 - May 2015)

Tracy joined Safeway as the Director of Corporate Internal Audit in 2005 to build the department and create a world class audit organization. She has responsibility for audits and consulting projects in functions such as Accounting, Finance, Treasury, Human Resources, Labor Relations, Legal, Merchandising, Marketing, Risk Management, Sustainability, Government Relations and Construction. She also leads the department’s Professional Services and Data Analytics to ensure the team has the tools and training necessary to provide business value and gain efficiency, effectiveness and data integrity in the audit process.


Prior to joining Safeway, Tracy created the Internal Audit Department at Bio-Rad Laboratories, a multi-national manufacturer and distributor of life science research and clinical diagnostics. In this capacity, she reported to the CFO and Audit Committee of the Board. She subsequently assumed responsibility for both Internal Audit and Sarbanes-Oxley, including the year one readiness, testing and reporting for 35 domestic and international subsidiaries. Prior to Bio-Rad, Tracy held various Accounting and Internal Audit positions at Chevron, where she primarily focused on domestic and international operations and integrated audits.

Tracy is a Certified Public Accountant (CPA), a Certified Internal Auditor (CIA) and holds a Certification in Risk Management Assurance (CRMA). She holds an MBA in Finance from California State University Hayward and a Bachelor of Science in Accounting from California State University Chico. She is passionate about internal audit and advancing the profession through quality training and development. She is a member of the Institute of Internal Auditors’ Learning Solutions Committee, was the Vice President of Programs for the Northern California East Bay (NCEB) Chapter of the IIA for the past two years, and is a past NCEB IIA Governor and Chair of Academic Relations.

Past President
(June 2011 - May 2013)

Paul is an Information Technology Audit Manager for Chevron. He has worked for Chevron for over 25 years, spending the past 22 years in positions of increasing responsibilities in both Finance and IT Audit. He currently manages audits of IT infrastructure, process control networks, critical business applications (including new systems implementation), Sarbanes-Oxley compliance, data privacy compliance, and application service providers.

Paul joined the IIA in 1991 and has served as President and Vice President of Programs.

Paul has a Bachelor of Science degree in Business Administration with emphasis in Finance and Accounting from the University of California, Berkeley. He is a Certified Internal Auditor (CIA) and a Certified Information Systems Auditor (CISA.)

Past President
(June 2009 - May 2011)

On January 5, 2015, Brenda Roberts was sworn into her first term as Oakland City Auditor. She is committed to making Oakland run with efficiency and transparency and has the credentials to move Oakland forward: driving for more cost savings, and accountability on every level.

Ms. Roberts has two decades of professional experience as a Certified Public Accountant, Certified Internal Auditor and Certified Fraud Examiner working with national firms KPMG and Deloitte, and with Fortune 500 companies, the U.S. Office of Inspector General, U.S. Department of Labor, and the City/County of San Francisco.

Ms. Roberts has received many accolades for her professional excellence including: Knighton Award – Gold from the National Local Government Association; Exceptional Achievement Award from the U.S. Department of Labor and Significant Achievement Award from Deloitte & Touche, LLP.

She has also shown leadership in her field having served on the Board of Governors for the Institute of Internal Auditors Northern CA – East Bay Chapter for almost a decade, including as President and currently as a member of The IIA International Committee.

Past President

​Theresa has extensive experience in Internal Audit, Risk Assessment, Sarbanes-Oxley compliance, Fraud Investigation, and Accounting. Before becoming a management consultant, Theresa headed the Internal Audit function for a major drug store chain and for an escrow and title insurance company where she directed financial, operational and IT audits, as well as special investigations. Theresa holds an MBA from the Thunderbird Graduate School of International Management and is a Certified Internal Auditor, Certified Fraud Examiner, and has a Certification in Risk Management Assurance. She is proud to be part of the Northern California East Bay chapter of the IIA and, for the past 14 years, has held various leadership roles including: Chapter President, Treasurer, Asst. Treasurer, Certification Committee Chair, Record Retention Committee Chair, and Volunteer-at-Large.

Past President

​​Henry Tamayo, served as president of the Mount Diablo Chapter of the IIA from 1998 – 1999. Prior to becoming President, he was an active member of the Chapter, as he served as Vice President – Seminars, Vice President – Monthly Meetings and was also on the Academic and Audit Committees. Henry began his career with Gulf Oil Corporation in Houston, Texas in 1978 and retired from Chevron Corporation in 2014 in Concord, CA. after 36 years of active service. Henry met the professional and educational requirements to become a Certified Public Accountant, Certified Internal Auditor, and Certified Fraud Examiner. He enjoyed working with his talented and professional colleagues and the challenges of evaluating and testing clients' control environments and making recommendations to mitigate their risks and improve their internal controls. He misses the close relationships he developed during his employment: however, he is enjoying his retirement by traveling and spending time with his grandchildren.

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 About This Chapter


The Mt Diablo Chapter was formed on May 13, 1991 and the Tri-Valley Chapter was formed on Nov 17, 1986. The two chapters merged to form the Northern California – East Bay Chapter in Sept, 1999, and retained the charter date of Nov 17, 1986.