Wolfram Doelker

Wolfram Doelker

GABA Director
Southern California Chapter Chair

Co-founder of GABA’s Southern California Chapter
Treasurer until 2012, Chairman since 2013


With 25 years experience in taking businesses global, his consulting practice focuses on market entry into the US and Europe. Services include business presence, market entry, start-up and project management, as well as temporary CEO, COO, CFO and business services. Prior to founding WDE in 1998, he managed the successful globalization of a European based company from an $80 Mio business in 4 countries to a $400 Mio business in 19 countries. For 8 years based out of Europe and 7 years out of the US, he negotiated and successfully integrated over 20 acquisitions, started businesses from scratch, negotiated joint ventures, developed licensing and franchise programs and managed business units in Europe, Asia and North America.As a certified banker, he started his career in banking and finance in Stuttgart, Germany and Chicago, ILA graduate in Business Economics of the University of Saarbruecken, Germany, he earned his MBA from Union Graduate College in Schenectady, New York.

He served and serves on a number of corporate Boards of US subsidiaries, as Chairman of an Industry Association of Plastic Manufacturers in Germany, the Board of German American Schools, the International Advisory Council of the Los Angeles Economic Development Corporation and the German American Business Association of Southern California.

Dr. Christoph Kirchner

Christoph Kirchner

Treasurer – Southern California

Chief Financial Officer of BI Nutraceuticals, Inc.


BI Nutraceuticals, Inc. in Long Beach, California, a subsidiary of the Zuellig Group, headquartered in Hong Kong. BI Nutraceuticals, Inc. is a manufacturer of botanical powders and extracts for dietary supplements and nutritional ingredients. Christoph manages the financial and administrative functions across locations in North America and China and serves as a Director and Officer of BI Nutraceuticals, Inc. and several affiliated companies.
Previously, Christoph was involved in developing the cosmetics business for the Henkel Group, a Fortune 500 company based in Duesseldorf, Germany. As the Controller of Hans Schwarzkopf GmbH, he participated in the company’s sale and integration into Henkel KGaA, he managed mergers and acquisitions of cosmetic businesses in Russia, Latin America, Greece and the United States, he developed joint ventures and export businesses in Eastern Europe, and he managed the portfolio of affiliated companies. Additionally, he served as a Financial Executive of companies in Germany, France, Greece and in the United States.
Christoph holds a Ph.D. and an MBA from University of Hamburg, Germany. As Assistant Professor of Business, he taught Accounting and Finance at the University of Southern Indiana. He is fluent in German, English and French.

Michael Boehm

Michael Boehm

Members at Large – Southern California
Clean-Tech and Sustainability IG Co-Chair – Southern California

COO at Haig Barrett, a management consulting firm
Partner in HB/Sustain, Haig Barrett’s sustainability practice.


With over two decades of international business experience as a technology entrepreneur, Michael understands the real pressures organizations and their decision makers face on a daily basis. He has co-designed the Haig BarrettSustainovation sustainability strategic framework to create growth opportunities, build business, and find new streams of profitability.

Educated at Northwestern and Stanford Graduate School of Business, Michael combines an understanding of the behavior of organizations and the individuals who make them up and the technical systems they use to deliver service and value.

Michael is LEED AP and also certified in The Natural Step. Previous work experience included CEO of Solar start up SEDI, CTO ofcarsdirect.com, and work on Sempra’s smart grid while VP at Proximetry.

Michael teaches classes in the Global Sustainability Certificate programs at the University of California (UCLA) and is a Co-Founder of the Advanced Sustainability Institute in Santa Monica. He speaks Mandarin Chinese and is both a student and lecturer on Taoist philosophy. He serves as the Clean Tech Chair for the German American Business Association in Southern California.

Sven Hackmann

Sven Hackmann

Members at Large – Southern California

Vice President, US Cities Initiative at Siemens One, a Division of Siemens Corporation


Sven is currently responsible for the roll out and ongoing success of the Siemens Cities Initiative for the United States. Siemens Corporation has 405,000 employees at 1,640 locations around the globe, including 176 R&D facilities. By leveraging the breadth of Siemens portfolio of innovations and technologies, the Siemens One team provides customers in the private and public sector with tailored solutions that improve their performance and bolster their competitive position in the marketplace.

Since joining Siemens in 2001, and Sven has served as Regional Vice President for Southern California and Nevada in the Healthcare Sector, and previously as Business Development Manager for Siemens Business Solutions focused on development of long-term strategic partnerships with medical organizations.

He is a board member of the Los Angeles Area Chamber of Commerce, and he serves on the Board of Adviser at the University of Southern California Price School of Public Policy, Center for Sustainable Cities.  Sven is an alumni of the University of California, Los Angles (UCLA).

Dan Hoover

Dan Hoover

Members at Large – Southern California

Founder and President of Estey-Hoover Inc.


Dan Hoover is Founder and President of Estey-Hoover Inc., an Advertising and PR Agency that provides domestic and international strategic planning, media buying, creative ads, brochures, web design, email campaigns and other marketing services targeted at consumer and business to business customers in a wide variety of industries. Estey-Hoover is a longtime member of the prestigious American Association of Advertising Agency (AAAA). Prior to founding Estey-Hoover in 1975, Mr. Hoover was the Executive Vice President of Hoover Communications Group and President of Innovative Medical Marketing Systems.Dan Hoover has received hundreds of creative and marketing awards over his long career. He has served on a number of corporate and non-profit Boards and been a marketing communications volunteer for numerous organizations, including the Partnership For A Drug Free America, Office of Protocol (Economic Development Council), Governmental Affairs Forum (Executive Council of Orange County), Association for Corporate Growth, United Way, Red Cross, American Cancer Society & others. He has received honored recognitions from the Governor of California, and is listed in Who’s Who in California, the West and in Advertising.Dan Hoover is a native of California, received his Bachelor of Arts degree in Political Science from California State University Northridge, is married (nearly 40 years) to his wife, Joan, and has one son, Tim.Estey-Hoover Advertising & PR can be visited at www.estey-hoover.com.

Daniela Treptow

Daniela Treptow

Members at Large – Southern California
Director of Seminars and Stammtisch

International/Market Communications Analyst at Euro VAT Refund, Inc.


Daniela Treptow is the International/Market Communications Analyst at Euro VAT Refund, Inc., a leading U.S. financial services firm, specializing in assisting North American companies with Value Added Tax (VAT) refund collection, VAT registration and management when conducting business in the European Union. Her responsibilities include marketing, communication with European embassies, consulates, trade and investment agencies, as well as U.S. companies who are involved in trade with the European Union.

She is also an active member of various other international organizations and associations, including the British American Business Council (BABC), Meeting Professionals International (MPI) and the Swedish Women’s Educational Association (SWEA).
Daniela earned her Bachelor of Arts degree in Intercultural Communications from Pepperdine University, Malibu, California. She previously worked for Lufthansa and Thai Airways and holds an Airline Travel Certificate. Born and raised in Sweden by German parents, she is fluent in Swedish and German.

Kathrin Turner

Kathrin Turner

Event Manager – Southern California


Kathrin Turner has been Co-Owner, Art Director and the creative force behind a global gourmet food company, a global Omega 3 distributing multi level marketing company and an upscale Southern California restaurant since 1997.With her experience in event management, international trade show events, private upscale dinner events, menu planning, marketing and design, she has now joined GABA as Event Manager for Southern California. Her diversified creative and managerial skills have their source in Fashion & Costume Design.A native of Germany, she graduated as a professional tailor and earned her Masters of Fashion Design from the University of the Arts in Bremen, Germany.

Michael Metzger


GABA Director
Southern California Chapter Vice-Chair

Partner at Drake Star Partners


Michael is a Partner at Drake Star Partners and provides M&A and financing advisory services to Internet, media, entertainment and technology companies. Drake Star Partners is a global media & tech investment bank with offices in New York, London, Paris, Munich, San Francisco, Los Angeles, Berlin, Amsterdam, Geneva and Tokyo. Previously, Michael was a senior banker at Houlihan Lokey’s TMT group, Principal at MESA, a merchant bank and advisory firm specializing in digital media and entertainment transactions. Prior to MESA, Michael was Co-Founder and Principal at Covert & Co., Vice President at New Century Capital Partners, and held senior management and engineering positions at AT&T, IBM and Mindspeed.

Michael holds 5 patents in the field of Communications, and he also serves as a Board Director of the German American Business Association (GABA) and as a Vice-Chair of the Southern California Chapter.

Michael was raised in Stuttgart, Germany and received an MSEE from University of Ulm, Germany and an MBA from the University of California, Los Angeles (UCLA) Anderson School of Management.