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Medica, LLC

Adrian Sierra

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Adrian Sierra is Chief Executive Officer of Sierra Forensic Group (SFG), and an affiliate of Medica, LLC.  His professional experience has provided him with a wide array of knowledge in the areas of accounting, forensic accounting, forensic technology, litigation support, and taxation.  Adrian has testified as an accounting expert witness and has prepared expert reports.  He has conducted multiple engagements within the United States, Canada, Latin America, Europe, and Asia.  Adrian’s experience includes 10A and SEC investigations, asset misappropriation, kickback, vendor fraud, and anti-bribery and corruption investigations, Foreign Corrupt Practices Act (FCPA) matters involving due diligence, investigations and compliance.  He works with public and private multinational clients including Fortune 100 and 500 companies.

Adrian frequently speaks on topics including anti-corruption investigations, comparative accounting, compliance, fraud awareness, artificial intelligence technology and interviewing techniques to a variety of audiences such as to the Office of the City Treasurer - City of Chicago, the Association of Certified Fraud Examiners (ACFE), the Institute of Internal Auditors (IIA), the Wisconsin Institute of Certified Public Accountants (WICPA), the Practicing Law Institute (PLI), the Hispanic National Bar Association (HNBA), the Society of Corporate Compliance and Ethics (SCCE), the DePaul University’s graduate level Fraud Investigations course, the University of Illinois at Urbana-Champaign’s (UIUC) Forensic Accounting course and Accounting Controls Systems course, and the Florida International University (FIU) Masters of Accounting Program.

Adrian is a co-founder and co-chair of the Hispanic National Bar Association's (HNBA) Compliance and Ethics Section, an author of the 2019 edition of The Complete Compliance and Ethics Manual from the Society of Corporate Compliance and Ethic (SCCE).  He also contributed to A Guide to Forensic Accounting Investigation, by John Wiley & Sons, Inc. and The Global Economic Crime Survey 2007: South and Central America Supplement by

PricewaterhouseCoopers LLP.

Prior to founding SFG, Adrian worked in the Investigations and Forensic Services practice of PricewaterhouseCoopers LLP (PwC).  He received a Bachelor of Science in Accountancy degree from the University of Illinois at Urbana-Champaign.  Adrian also completed an Executive Educational course held at Stanford Graduate School of Business (GSB).  Adrian is a Certified Public Accountant (CPA) licensed in Illinois, a Certified Fraud Examiner (CFE), certified in Financial Forensics (CFF), a Chartered Global Management Accountant (CGMA), a native Spanish and English speaker and has elementary proficiency in Portuguese.

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