Office of the City Auditor
Key Staff

Kevin W. Barthold, CPA, CIA, CISA, CRMA

Kevin W. Barthold, CPA, CIA, CISA, CRMA

Kevin W. Barthold was appointed San Antonio City Auditor in February 2012 after serving in an interim capacity since February 2011. Kevin joined the City in September 2008 and served as an Audit Manager prior to his current appointment. As City Auditor, Kevin leads a team responsible for conducting performance, compliance, and technology audits of all City departments, offices, agencies, and programs. He reports directly to the Mayor and City Council. 

Kevin has over 27 years of internal audit experience in multiple industries. He has served in management capacities at USAA, San Antonio Credit Union, and Argo Group International.
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Hedei Arias, CFE

Hedei Arias, CFE

Hedei joined the Office of the City Auditor in May 2018. She holds a Master of Science in Accounting from Southern New Hampshire University and a Bachelor of Business Administration in Finance from Texas A&M International University. She has over five years of cumulative experience in accounting and procurement from Bexar County and Webb County.

Mark Bigler, CPA, CISA, CFE

Mark Bigler, CPA, CISA, CFE

Mark is an Audit Manager in the Office of the City Auditor. Mark has graduate degrees in accounting and management information systems. He has over 20 years of performance, IT, fraud, and financial audit experience and has been with the City of San Antonio for over 9 years. He has previous work experience in the software, public utility, and natural resource industries.

Javier Castillo

Javier Castillo

Javier holds a Bachelor of Applied Arts & Science in Information Technology with a concentration in Cyber Security from Texas A&M University – San Antonio. Prior military US Navy stationed in Yokosuka, Japan. Javier has experience with Sarbanes-Oxley and Internal IT Audit with companies including Rackspace and Harland Clarke.

Judith Flores, CPA

Judith Flores, CPA

Judith joined the Office of the City Auditor in December 2018, and has over seven years of experience in performing external financial audits of governments, not-for-profit organizations, public companies, financial institutions, and retirement plans with leading CPA firms. She holds a Bachelor of Business Administration in Corporate Finance from The University of Texas at Austin and is a Certified Public Accountant.

Doug Francis

Doug Francis

Doug has been employed with the Office of the City Auditor since April of 2009. He holds a Master of Science degree in Accountancy from Texas State University. Prior to joining the City, he was a senior auditor with Ernst and Young, LLP.

Lawrence Garza, CFE

Lawrence Garza, CFE

Lawrence holds a Bachelor of Business Administration Degree in Finance from the University of Texas at San Antonio. He joined the City Auditor’s Office in September 2013 with over nine years of accounting and operational management experience.

Terri Hernandez, CISA

Terri Hernandez, CISA

Terri joined the Office of the City Auditor in October 2016. She holds a Bachelor of Science in Biology from the University of Texas at San Antonio. She has 10 years of experience in Auditing, quality assurance, process development, quality improvement, change control & regulatory compliance. Terri also has prior experience in the Biologics, pharmaceuticals, & health informatics industries.

Sophia Konstantinidis

Sophia Konstantinidis

Sophia joined the Office of the City Auditor in May 2018. She holds a Bachelor of Arts in Anthropology from the University of Texas at Austin. Prior to joining the Office of the City Auditor, she worked in a variety of roles coordinating operational processes and reviewing procedures for compliance.

Daniel Kuntzelman, CIA

Daniel Kuntzelman, CIA

Daniel joined the Office of the City Auditor in January 2015. He holds a Master of Science in Accounting Degree from Texas A&M University and a Bachelor of Business Administration from Schreiner University.

Nastasha Leach, CIA

Nastasha Leach, CIA

Nastasha joined the Office of the City Auditor in August 2016. She holds a Masters of Professional Accounting and a Bachelor of Business Administration in Accounting from Texas A&M University – San Antonio. Nastasha comes from a military background and has previous experience in bank regulation.

Abigail Medina, CPA

Abigail Medina, CPA

Abigail joined the Office of the City Auditor in December 2017. She holds a Master of Accountancy Degree and a Bachelor of Business Administration in Accounting from the University of Texas at San Antonio. She is a Certified Public Accountant (CPA). Prior to the City, Abigail worked as an external auditor with RSM US LLP.

Maria Elena Perez, CCEP, CRMA

Maria Elena Perez, CCEP, CRMA

Maria holds Master of Art Degrees in both Business Management and Human Resources Development. Prior to joining the Office of the City Auditor, she worked in higher education where she has over 10 years of experience in compliance, investigations, and risk management. Maria is a Certified Compliance and Ethics Professional (CCEP) and is also certified in Risk Management Assurance (CRMA).

Elizabeth Reyes

Elizabeth Reyes

Elizabeth joined the Office of the City Auditor in November 2018. She holds a Bachelor of Arts in Criminal Justice from the University of Texas at San Antonio. Prior to joining the City, she served in the Military and worked in logistic management and internal auditing.

Elsa Smithwick

Elsa Smithwick

Elsa joined the City of San Antonio in December 2006. She serves in an administrative support capacity for the entire audit staff. She is also one of our Department System Specialist (DSS) which she assists others in computer/technical situations. She is a graduate of Corpus Christi State University (CCSU) with a Bachelor of Science Degree in Computer Programming.

Denise Trejo

Denise Trejo

Denise joined the Office of the City Auditor in June of 2018. She has a Bachelor of Business Administration in Accounting from Texas A&M – San Antonio. She has five years of accounting and grant management experience. Denise has also worked as a Registered Veterinary Technician (TVMA) and as an Immunohistochemistry Technician (ASCP) in veterinary, biomedical, and medical settings.

Gabriel Treviño, CISA

Gabriel Treviño, CISA

Gabriel is an Audit Manager in the Office of the City Auditor. He joined the City Auditor’s Office in August 2012, and has seven years of experience with Sarbanes-Oxley and internal audit serving in both an IT and business process capacity. Gabriel has a Bachelor of Business Administration degree in Accounting from the University of Texas at San Antonio and he is a Certified Information Systems Auditor (CISA).

Susan VanHoozer, CIA, CISA

Susan VanHoozer, CIA, CISA

Susan holds a Master of Business Administration degree from Texas State University San Marcos. She joined the Office of the City Auditor July 2011 with 13 years of audit experience. Susan previously worked for the Texas State Auditor’s Office and a national CPA and Consulting firm that served the needs of government agencies at the state, federal, and local levels.

Buddy Vargas, CIA, CFE

Buddy Vargas, CIA, CFE

Buddy is an Audit Manager in the Office of the City Auditor. He holds a Bachelor of Business Administration Degree in Accounting and a Master in Business Administration from the University of Texas at San Antonio. Buddy has worked for the Office of the City Auditor since June 2007. He has 15 years of prior experience in the investigative field.

Sheryl Wardashki, JD, CPA

Sheryl Wardashki, JD, CPA

Sheryl joined the Office of the City Auditor in August 2016. She has over 15 years of experience in public accounting and industry with companies including Metromedia Restaurant Group and Arthur Andersen. She has a Bachelor of Business Administration in Accounting from the University of Texas at San Antonio and is a Certified Public Accountant (CPA). Sheryl is also a licensed attorney and a graduate of the University Of Texas School Of Law.

Holly Williams, CISA, CRISC

Holly Williams, CISA, CRISC

Holly joined the Office of the City Auditor in August 2014. She has over 15 years of IT audit and consulting experience with companies including Rackspace, USAA, Argo Group and Arthur Andersen. She has a Bachelor of Business Administration in Accounting and Management Information Systems from Texas A&M University, and is a Certified Information Systems Auditor (CISA) and Certified in Risk and Information Systems Control (CRISC).

Daniel Zuniga, CPA, CIA

Daniel Zuniga, CPA, CIA

Daniel Zuniga has more than 11 years of municipal government auditing experience with the City of San Antonio’s Office of the City Auditor. He has a Bachelor degree in Accounting from the University of Texas at San Antonio.