Faculty and Executive Coaches

Mark Chun
Department Chair of Decision Sciences‚ Information Systems‚ and Strategy

Dr. Mark Chun is a professor of information systems technology management at Pepperdine University's Graziadio Business School. He recently served as the Interim Associate Dean of Executive Programs. Dr. Chun earned a PhD in Information Systems from the University of Colorado at Boulder, received an MBA from the University of California, Irvine, and holds a Bachelor of Business Administration degree with an emphasis in management information systems from the University of Hawaii.

Gia Honnen Weisdorn
Practitioner Instructor of Business Law

Gia Honnen Weisdorn is a practicing attorney with the Law Offices of Gia Honnen Weisdorn, a firm with clients in the fields of entertainment, the Internet, biotechnology, and technology, among others. Since 2001, Professor Weisdorn has taught business law, eLaw, international law and negotiations at the Graziadio Business School. Professor Weisdorn is a Harlan Fiske Stone Scholar honors graduate of Columbia Law School (LL.M.) and graduated magna cum laude from the University of San Diego School of Law (JD). She holds an MBA with a finance concentration from Pepperdine University.

Brian Jacobs
Professor of Decision Sciences

Dr. Brian Jacobs is a professor of decision sciences at the Pepperdine Graziadio Business School. He teaches project management, production and operations management, and quantitative analysis in the Graziadio bachelor of science, MS, MBA, and Executive MBA programs. Prior to joining Graziadio, Brian was an associate professor of supply chain management at Michigan State University. He holds a BS in Marine Engineering Systems from the US Merchant Marine Academy, an MS in Mechanical Engineering from MIT, and a PhD in Business Administration from Georgia Tech.

Charlie Kerns
Professor of Applied Behavioral Science

Dr. Kerns has more than 30 years of business, management and consulting experience. He joined Graziadio as an associate professor of applied behavioral science and has taught in nearly every program at the Graziadio School and served as the associate dean of academic affairs. Dr. Kerns is a diplomate and holds ABPP certifications in both industrial-organizational psychology and organizational and business consulting psychology.

Clemens Kownatzki
Assistant Professor of Finance

In 2010, Dr. Kownatzki joined Pepperdine University and is currently Assistant Professor of Finance. In 2020, he became the Department Chair of Accounting, Finance and Real Estate. During his tenure, he was Academic Director of the MS Applied Finance program from 2017-2019. In 2016, he received a prestigious research grant from the Chicago Mercantile Group Foundation. Dr. Kownatzki’s primary research interest focuses on the important question of how risk and market volatility affects investment returns.

Gary Mangiofico
Executive Professor of Organizational Theory and Management

Dr. Mangiofico has taught at the Pepperdine Graziadio School since 2002 and brings more than 20 years of experience leading strategic development, operations management and integration, and turnaround operations solving complex challenges as a CEO, COO, and as a general management executive for both start-ups and Fortune 50 companies. Dr. Mangiofico holds a BA and MA in psychology from Chapman University in Orange, Calif., and a PhD in Organizational Psychology from the California School of Professional Psychology (Alameda/Berkeley).

Brian McGilvray
Practitioner Faculty of Business Law

Brian McGilvray currently teaches courses in leadership and ethics, business law, employment law, and human resources management at Pepperdine University’s Graziadio Business School. McGilvray previously taught at California State University, Northridge, and has guest lectured on ethics and family business issues at UCLA’s Anderson Graduate School of Management. McGilvray currently serves as the Chair of the Master of Science in Business Program in the Graziadio Business School. McGilvray earned his Juris Doctor degree from the Pepperdine University Caruso School of Law, and his MBA degree and Bachelor of Science in Management degree from the Pepperdine University Graziadio Business School.

Roger McMahon
Associate Professor of Marketing

Dr. Roger McMahon's MBA teaching duties at Pepperdine Graziadio Business School have focused on the areas of Marketing Management, B2B Marketing, and Marketing Consulting. In addition, he has served as the lead marketing faculty member for the full time MBA program and currently sits on the EMBA committee. He holds an MS from Pepperdine University and a DBA from Mississippi State University.

John Mooney
Professor of Information Systems and Technology Management

Dr. John G. Mooney is professor of information systems and technology management and academic director of the Executive Doctor in Business Administration at the Pepperdine Graziadio Business School. He also serves as the Graziadio School academic director to Pepperdine University’s Institute for Entertainment, Media, and Sports. Dr. Mooney holds a BS in computer science and a master of management science both from University College Dublin, and a PhD in information systems and business strategy from UC Irvine.

Kurt Motamedi
Professor of Strategy and Leadership

Dr. Motamedi is Professor of Strategy and Leadership at Pepperdine University. He received his PhD and MBA from UCLA - Anderson Graduate School of Management in Strategy and Organization Development, and his MSEE in semiconductor and computers from UC-Santa Barbara. Professor Motamedi helps develop and grow companies, works with management on strategic planning and execution, trains and develops high performing management teams and executive talent.

Steven Rapier
Assistant Professor of Marketing

Dr. Rapier has been actively engaged in marketing as both a practitioner and lecturer since 1982. As a practitioner, he has over 25 years of experience on both the agency and client side. He has provided strategic insight to brand and marketing, advertising, public relations, and market research to a range of organizations. He holds an Executive MBA and a PhD in Philosophy from Claremont Graduate University.

Kent Rhodes
Practitioner Lecturer of Applied Behavioral Sciences

Dr. Rhodes serves as a core faculty member with Pepperdine University's Doctoral Programs in Organizational Change and Organizational Leadership and MBA Programs where he teaches courses in leadership, applied behavioral sciences, organizational theory, and ethics. Dr. Rhodes is an entrepreneur who maintains a successful coaching and consulting practice for a variety of privately held and family-owned enterprises. He is an expert in organizational effectiveness and development and understands merger and acquisition integration. He holsd a masters from Texas Tech University and a EdD from Pepperdine University.

Jaime Salas
Assistant Professor of Marketing

Dr. Salas is an assistant professor of marketing and has more than 12 years of industry experience. His main research is focused on the implementation of service infusion strategies among traditional industrial manufacturers. His research was sponsored by the Center for Services Leadership at Arizona State University, where he won several teaching awards.

Samual Seaman
Professor of Decision Sciences

Dr. Samuel L. Seaman is professor of Decision Sciences in the Graziadio Business School. He teaches graduate courses in applied statistics and evidence-based decision analysis and has an applied research agenda that focuses on the use of mathematical models to solve dilemmas in economics, finance, healthcare, and marketing. He holds an masters of education from Stetson University and a PhD in Philosophy from the University of Florida.

Teri Tompkins
Professor of Applied Behavioral Science

Dr. Tompkins joined the Graziadio Business School at Pepperdine University in 2001. Prior to her arrival at Pepperdine, she was faculty at The University of Redlands for eight years. During her tenure at the University of Redlands, she was nominated twice for best teacher of the year and received an outstanding service award. In addition, she served as department chair for a multi-disciplinary department and chaired several curriculum committees. Dr. Tompkins received her MBA (with an emphasis in Strategy and Marketing) and Ph.D. (with an emphasis in Management and Organizational Behavior) from Claremont Graduate University. She earned her masters and bachelors degrees respectively in Recreation and Leisure Studies for non-for-profit management from CSULB.

Mark Tribbitt
Associate Professor of Strategy

Dr. Tribbitt comes to academia with more than 14 years of experience within the financial services industry. During that time he has held a variety of management positions in retail, commercial and wholesale banking. His teaching focuses on strategic management, entrepreneurship, and management of technology and innovation. Dr. Tribbitt's primary research interest deals with the intersection between corporate governance and corporate entrepreneurship. He is a member of several academic associations. He earned a Ph.D. in strategic management from Drexel University, an MBA from Villanova University, and a B.S. in finance from the University of Delaware.

Demosthenes Vardiabasis
Professor of Economics

Dr. Vardiabasis has over 25 years of experience as a professor, entrepreneur, executive, and consultant. He has founded several companies and has served as a chairman and CEO of the IQ Now Corporation, which was acquired by a public company and of Health Windows, which provided services to such companies as American Express, Hilton, Yamaha, and Honeywell. He holds a master of arts from the University of Essex and a PhD from the University of Southern California.

Nikolai Wasilewski
Associate Professor of Strategy

Dr. Wasilewski focuses on strategic management and international business. He has broad international corporate experience with large multinational enterprises in engineering project management, consumer products market research, and international business development. He holds a masters from the University of Cincinnati, a masters from the Thunderbird School of Global Management and a PhD from New York University.

Zeny Agullana
Executive Coach, Executive MBA Programs

Zeny Agullana started her career in public service and spent 22 years working in different roles for the State of California serving in the California Legislature, Attorney General’s Office, and the State Treasurer’s Office. She currently serves as the Regional Vice President for State Government Relations for TIAA. 

Rob Ortega
Executive Coach, Executive MBA Programs

Mr. Ortega's business expertise reflected in moving from entrepreneur to seasoned executive, corporate leader, consultant and mentor ensures that the EMBA students will receive comprehensive, practical and direct benefits from his candid business insights, interactions, education and experience.

Pearl Quintana
Executive Coach, Executive MBA Programs

Quintana's business experience proves invaluable as she maintains strong and successful relationships. As a leader, mentor and coach, she ensures that her students receive pertinent information in all areas of business management.

Jim Emerick 
Executive Mentor, Executive MBA Programs and Adjunct Professor of Leadership, MSML, MSHR, MSGM

Mr. Emerick's varied experience as an executive, consultant, instructor and coach ensures that EMBA121 students will receive current and pertinent information relating to all facets of successful business ventures, whether entrepreneurial or corporate.

Corren Turner
Executive Coach, Executive MBA Programs

Mr. Turner’s varied experience as an executive, consultant, and coach will ensure that EMBA students receive current and relevant insights as it relates to all aspects of successful business practices.