Dr. Mark Rittenberg
Founder / Chief Creative Officer

For over twenty years, Dr. Mark Rittenberg has helped organizations create communities of excellence among their people and empowered individuals to become true leaders with the ability to actualize a vision -- all through the power of communication. Dr. Rittenberg believes that important personal, social, and business problems can be effectively addressed using the Active Communicating methodology he developed -- which draws upon the actor's discipline of engaging, creative and effective communication. 

Dr. Rittenberg's experience extends around the globe, across cultures and across industries. In Israel in the 1970's and 1980's, he was able to use theatrical activities to build cultural bridges and develop mutual respect among the Israeli and Palestinian students in his workshops. In South Africa, he served as Professor of Education specializing in teacher training workshops in arts based education as an interventionist working with at-risk youths in disadvantaged situations. Based upon this work, Dr. Rittenberg was awarded the J. William Fulbright Senior Scholar Award and traveled to post-apartheid South Africa in an attempt to rebuild the self esteem and confidence that had been shattered in Black communities during years of segregation. In 1999, he was asked to return to Israel and apply his cultural conflict resolution experience in Middle East peace initiatives with the Young Leaders Network. Dr. Rittenberg served as both a mediator and communication specialist for the UNESCO Middle East Peace Process forum. He worked with leaders from Jordan, Israel, the Palestinian Authority, and Egypt on peaceful solutions to the Middle East conflict. Rittenberg led a special interest group symposium on arts- based programs for disadvantaged youth for use in community centers in the four countries. 

Dr. Rittenberg is on the business and leadership communications faculty at the UC Berkeley Haas School of Business where he was awarded the The Earl F. Cheit Award For Excellence In Teaching . Additionally he currently teaches expressive communication and presentation in Executive Education Programs at the Kellogg School of Management at Northwestern University, the Haas School of Business at the University of California at Berkeley, the University of San Francisco, the Weatherhead School of Management at Case Western Reserve University, and the Olin School of Business at Washington University in St. Louis. Dr. Rittenberg holds a Doctorate in International and Multicultural Education from the University of San Francisco. He also holds a Masters of Arts Degree in Interdisciplinary Studies in Education from San Francisco State and a Bachelor of Arts degree from University of California at Berkeley where he double majored in Education and Social Welfare.

Doy Charnsupharindr, MBA


Doy Charnsupharindr is an executive coach and an instructor of MBA-level courses on developing leadership, communication, and coaching skills. He has taught at UC Berkeley’s Haas School of Business, UC Davis’ Graduate School of Management, the Center for Executive Education at UC Berkeley, and the Berlin School of Creative Leadership.

As an executive coach and consultant, Doy draws upon his prior professional experiences in management, customer service, business strategy, operations, and product management for the financial services and high technology industry. Today, he coaches and leads workshops for some of the largest corporations, nonprofits and governmental organizations worldwide.

Doy holds an MBA from UC Berkeley’s Haas School of Business and a BA in Economics from Stanford University. He is a graduate of BECI’s Executive Coaching Institute. Growing up in a multilingual household and living both in Southeast Asia and North America, Doy developed a deep awareness for different points of view, which informs his coaching practice.

While at Stanford he directed a cappella group Stanford Mixed Company, produced an album, and won the 2001 Contemporary A Cappella Recording Award for one of his many arrangements. His love for the performing arts extended to other stages as an actor and a dancer, and today Doy uses his extensive performing arts experiences to enable others to develop their communication skills and leadership presence.

Susan Houlihan, MBA


Susan Houlihan is a communications consultant, executive coach, and electrical engineer who leverages her 15+ years working in engineering and operations in the high-tech sector in Silicon Valley to bring a perspective firmly rooted in business applications to her consulting and coaching work. 

Susan teaches at business schools including: Lecturer for leadership, coaching and communications in the UC Berkeley Haas School of Business EWMBA/EMBA programs, Instructor at the UC Berkeley School of Data Science, UC Berkeley Coleman Fung Institute for Engineering Leadership, UC Berkeley Center for Executive Education and serves on the Faculty of the Berkeley Executive Coaching Institute.

She has been a Guest Lecturer at the School of Creative Leadership in Berlin, and Guest Faculty at the UCLA Anderson School of Management. She also heads up the Berkeley Executive Coaching Institute strategic operations.

Susan holds a Bachelor’s Degree in Electrical Engineering from University College of Cork in Ireland, an MBA from the Haas School of Business at UC Berkeley, and is a certified Executive Coach from the Berkeley Executive Coaching Institute.

In addition to one-on-one executive coaching, Susan facilitates leadership, communications and coaching workshops as well as communications coaching of presentation skills, working with clients on the material (e.g. Powerpoint) and the delivery (content, verbal and non-verbal).

A native of Ireland now based in the US, Susan is an experienced cross-cultural communicator, who has worked extensively with individuals and Fortune 500 companies in the Americas, Europe, and Asia. Clients include Salesforce.com, Adobe, Facebook, Biorad, UCSF Benioff Children’s Hospital of Oakland, Cisco Systems, Qualcomm, Peterson CAT, Financial Women of San Francisco, IEEE, UCSF, UC Hastings, Genentech, Novartis, Cypress Semiconductor, McKinsey (Dubai), Fattals (Lebanon), Odgers Bernstein (Russia), Siam Cement (Thailand), and The Berlin School (Germany).

Susan is excited to work with people to uncover their passions, explore their values, move past their obstacles, and build a fulfilling personal and professional life.

Jenny Herbert Creek, MBA

Jenny Herbert Creek is the Chief Financial Officer of the Berkeley Executive Coaching Institute. She holds an MBA from the UC Berkeley Haas School of Business, and is a graduate of Stanford University.

Ingrid Gavshon
Director of International Development & Strategic Alliance

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Ingrid Gavshon is a partner at Berkeley Executive Coaching Institute, lecturer at UC Berkeley, executive coach and senior training consultant as well as an award-winning documentary filmmaker. Gavshon draws on her many filmmaking skills integrated within the executive coaching process to help clients discover their compelling leadership stories and inspire their teams. Her clients are able to leverage many of their strengths, gifts and talents as they pursue new challenges and opportunities that come to light in their coaching programs.

Ingrid works internationally with coaching clients as well as to conduct leadership development seminars for companies such as Adobe Systems, Cisco Systems, UCSF Benioff Children’s Hospital of Oakland, Cisco Systems, and the Peterson CAT Corporation where she serves as a senior facilitator in their Brand Ambassador Program: BECI's full spectrum Cultural Transformation program where all employees become living examples of the corporate values as well as improving their communication and leadership skills. Her cross-cultural expertise has also taken her across the Middle East and Asia to develop emerging women leaders.

Ingrid has served as guest faculty at the UC Berkeley Center for Executive Education where she teaches in the High Impact Leadership and Leader as Coach programs, and is on the faculty of the Executive Coaching Institute.

In addition to teaching and coaching, Ingrid continues her work as a documentary filmmaker. She has made over 20 documentaries about Nelson Mandela, many of which aired in December 2013 as a tribute to his life in South Africa.  

Ingrid divides her time between the USA and her native South Africa where she continues her work as a human rights filmmaker and as an executive coach.

Jennifer Caleshu, MBA
Director of Marketing, Facilitator & Executive Coach

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Jennifer Caleshu is a lecturer, facilitator and certified executive coach for programs in leadership, communications, design thinking and innovation. Her coaching work is informed by more than 15 years of leadership in the cultural sector with functional expertise in strategy, marketing and communications, including most recently as Director of Earned Revenue for a museum. 

She is a member of the professional faculty at the University of California’s Haas School of Business where she teaches in all three MBA programs (full-time, part-time and executive MBA programs): as a Lecturer for the core design thinking course Problem Finding / Problem Solving, and Building Trust-Based Relationships, Team Coach for applied innovation consulting course, and Assistant Lecturer for leadership and communications courses. She has also facilitated both leadership and innovation programs through the UC Berkeley Center for Executive Education, including High-Impact Leadership and Leading Innovative Change.

She is a facilitator and executive coach for the Berkeley Executive Coaching Institute, where she facilitates leadership, communications and coaching programs with diverse clients in technology, heavy equipment, and education in the US and in Singapore. As an executive coach, her clients have included individual contributors, managers, and directors seeking to empower themselves and their teams through one-on-one coaching for leaders. She also serves as the Director of Marketing for Berkeley ECI.

Jennifer also coaches individuals on creating and delivering effective presentations, including supporting verbal and non-verbal communication skills, overcoming stage fright, designing impactful PowerPoint presentations, preparing for Q&As and more. Additionally, she has developed and led design thinking workshops for clients including GitHub, UC Berkeley’s Haas School of Business, and Rotary International.

Jennifer earned an MBA with honors from the UC Berkeley Haas School of Business, where she received the “Outstanding Graduate Student Instructor” award. She also holds a BA in Human Biology from Stanford University with a focus on Issues of Adolescence. She is a certified Executive Coach from the Berkeley Executive Coaching Institute.


Arina Isaacson, MA
Senior Consultant

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For the past 25 years Arina Isaacson has brought her expertise to the field of executive coaching and inspirational leadership communication. She has consulted internationally with senior management teams across the globe.  Her  experience includes working with corporate, educational and government organizations. Her specializations are: executive coaching, building leadership presence,  communication skills and storytelling for leadership. Arina has been a senior consultant with Corporate Scenes, Inc. and Mark Rittenberg Enterprises over 20 years.

Arina has provided executive coaching and leadership communication programs for corporations including, AT&T, Gap, Adobe,  Hotwire, Cisco,  Cypress Corp., Lucent Technologies, Mede Analytics, Genentech, Inc., St. Supery Vineyards & Winery, Pandora,  Mozilla.org, Panasonic, Planned Parenthood, Rock Health, Women Leading Technology,  Learning as Leadership, Khan Academy, North Bay Coaches Assoc., California Hospital Association, Kaiser Permanente, Nortel Networks, Atic Abu Dhabi, Avis South Africa, Quaker Chemical Corporation, Thailand Management Association, Shanghai China, SIS Conference Consulting (Shanghai) Co., Ltd, Fattal Company Beirut Lebanon, East Water, Thailand,  Societe Generale Paris and San Francisco, Deloitte & Touch, Amgen Pharmaceuticals, Sandia National Laboratories, Lawrence Livermore National Laboratories and Berkeley Lawrence National Laboratory.
She is on the professional faculty at UC Berkeley/Haas School of Business and is a senior faculty member at Berkeley  Executive Coaching Institute (BECI).  

Arina creates interactive environments where she challenges participants to identify and transform their  communication weaknesses into  strengths. She has taught at Kellogg Graduate School of Management at Northwestern University, Olin School of Business at Washington University,UC Davis Graduate School of Management and HKUST/ Hong Kong Business School. 

Arina is the principal of Arina inc, an executive coaching and consulting practice that specializes in developing authentic presence and creativity through communication, storytelling and speaking coaching.  Through Arina inc,  she coaches Hipower, a select group of women corporate leaders, from Silicon Valley, focused on accelerating  leadership roles  to wide-ranging significance.  

She received her MA degree in Education, Linguistics and Communication from New York University. Arina is an internationally recognized, and award winning,  improvisational actress; master puppeteer and storyteller; a painter, a vision board collage artist, sculptor and creativity coach.  She founded and was the longtime artistic director of the San Francisco School of Improvisational Theater. 

Lucy Kaplan, MA
Senior Consultant

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Lucy Kaplan is an executive coach whose dynamic blend of humor, compassion, honesty and rigor is balanced by an astute comprehension of the pragmatics of corporate life. Her understanding of the people side of corporate culture and business has deepened over the 22 years during which she has consulted, designed and delivered workshops in leadership presence, team building, management skills and conflict resolution.She believes that self-reflection is the key to a meaningful and successful life. To this end, her coaching sessions with executives are on-going awareness lessons. Lucy coaches her clients to be intentional in their choices and courageous in trying out new behaviors to meet their immediate and long-term goals - skills that increase their effectiveness as leaders.She has coached in venues ranging from corporate boardrooms, to prison lock-ups to educational institutions throughout the US. Her client list includes Barclays Global Investors, Cisco, The Gap, MIT, Deloitte, Sandia National Laboratories, The Chicago Tribune and the California Department of Corrections. 

Lucy is a longtime meditation practitioner, who has brought this practice into her coaching sessions. She holds a degree in philosophy from the University of Cape Town, South Africa. She has also had a successful career as a painter, a competitive marathon runner and is currently studying chess. She has two daughters and two cool grandsons.

Reba Rose, MA
Senior Consultant

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Reba Rose is a Senior Consultant with over 20 years of international experience in leadership development. She has coached senior level professionals at top-flight business schools such as Haas, Olin and Kellogg, and is a faculty member of the Executive Coaching Institute at UC Berkeley’s Center for Executive Education. Reba specializes in building courage, clarity and confidence to positively impact others to move from a place of power.

In addition to her work with BECI, Reba owns and operates Stand Tall Leadership to provide consulting and training to build transformational leadership skills within organizations. As a dynamic trainer, Reba challenges leaders to strengthen their authentic presence, deepen trusted advisor skills, and build pro-active teams. She has worked with corporations such as Capital One, Société Generale, Boston Consulting Group, McKinsey and Merrill Lynch. She also works with the Boys & Girls Clubs of the Peninsula as the Director of Program Strategy to develop effective programs that support young people in bringing their dreams into reality.

Reba is known for an intuitive and passionate “hands-on” style. She utilizes inclusive processes to create learning experiences that are powerful and transformative. She trained and performed for over 12 years as a theater artist. Holding a Masters Degree in Educational Psychology, a Teaching Certificate in Social Science, a Special Education Certificate, and Black Belts in both Kajukenbo, and Chi Gung, Reba pulls from a diverse range of tools. She is most proud, however, of being the mother of two independent and creative children.

Siobhan McCann, CPCC, ACC

A world traveller currently based in Montreal, Siobhán McCann is an executive coach, consultant, and member of the core faculty at the Berkeley Executive Coaching Institute, where she teaches, co-facilitates workshops and coaches in leadership development and communications, as well as leading business development in Canada and Russia.

Born in Ireland, Siobhán boasts a unique cross-cultural professional experience, cultivated in Europe and Russia, North America, Asia, and the Middle East, in the fields of neuroscience, academia, architecture and design, film, media, the arts, investment banking, management consulting and a variety of other industries prior to pivoting into executive coaching and leadership development.

An Executive Leadership Coaching graduate of the UC Berkeley Executive Coaching Institute, and an ICF-Certified Professional Co-Active Coach through The Coaches Training Institute, Siobhán is an Associate Certified coach with the International Coach Federation, a Winslow Certified Business Consultant and an Accredited Passion Mapping™ Practitioner. She is certified in Hogan Personality Inventory, Hogan Development Survey and Hogan Motives, Values and Preferences Inventory delivery and assessment. She graduated with Honours in French and Sociology from the National University of Ireland and pursued graduate studies at the Université de Toulouse, France, and McGill University in Montreal, Canada. Siobhán is currently pursuing vocal and singing training at the Roy Hart Theatre in France.

 As an assistant lecturer, Siobhán has taught Leadership Communications to Evening and Weekend MBA students at the Haas School of Business, University of California at Berkeley, and in the Executive MBA program at the School of Business at Nanyang Technological University, Singapore.

 In addition to her faculty and executive coaching roles with the Berkeley Executive Coaching Institute, Siobhán collaboarates on custom workshops and long-term projects with corporate clients in North America and internationally, facilitating authentic leadership presence and communications, storytelling for business, coaching and mentorship, and cultural transformation.

In her coaching practice, Siobhán guides her clients to identify and connect with their core values and inner drivers, to explore possibility, identify and overcome perceived road-blocks and challenges, anddiscover their own authentic leadership presence, in order to free themselves to live their lives with purpose and passion. Through a dynamic co-active™ process she moves emerging leaders from deep insight to action, untethering limiting behaviours from belief systems and eliciting clear purpose, actionable goals and desired results in both the personal and professional realms. She believes in the power of one voice to create lasting impact, and is dedicated to helping others find theirs in order to be agents of the change they want to see in the world. 

Alison Meyer, MBA

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Alison Bloomfield Meyer’s mission is to increase people’s impact and engagement, for greater profitability, satisfaction and fun.

She is a communications consultant, learning designer and executive coach with a background in high tech, a former career in consulting, and a professional training in the theater. Since 2009, Alison has worked with the BECI team as a facilitator and program manager for workshops in leadership development, employee engagement, change management and coaching. She’s traveled to Dubai, Thailand, Singapore and all around the US helping clients transform their leadership impact through experiential learning.

Her education includes a Bachelors’ in Art History from UC Berkeley and an MBA from the UC Berkeley Haas School of Business, where she is an Assistant Lecturer for MBA leadership communications courses and an instructor at the UC Berkeley Center for Executive Education. Her coaching certification comes BECI in association with the UC Berkeley Haas School of Business, where she attended the ECI and Advanced ECI. Additionally, she holds a Certificate in Designing Learning from the Association for Talent Development, and a Certificate in Theater from the American Conservatory Theatre.

Alison is also an award-winning singer/actor who has performed in the US and Europe and trained intensively in voice, speech, movement, character study, text analysis, writing and directing. A native of San Francisco, she enjoys learning what makes people tick, and speaks enough French and German to get into trouble.

Ivan Midderigh
Senior Consultant

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Ivan Midderigh is a voice teacher, corporate facilitator and photographer on the senior faculty of the Executive Coaching Institute at the Center for Executive Education, UC Berkeley Haas School of Business.

His work with the voice as a tool of communication began in 1971 when he became a member of the Roy Hart Theatre, whose pioneering work with the human voice has received worldwide recognition. With the company he taught voice workshops throughout Europe and the United States, and also performed in many of the theatre’s major productions, before training in Corporate Scenes' Active Communicating, a theatre-based methodology designed specifically for the corporate world.

As a senior facilitator for Corporate Scenes for over 20 years, Ivan has led seminars with wit and style for major international companies including AT&T, Pacific Bell, Nortel Networks, The Gap, Sandia National Lab, Levi Strauss, McKinsey and Co, and is a guest lecturer at The Olin School of Business at Washington University, St Louis.

He also spent 5 years in South Africa as a master facilitator of the Brand Ambassador program for Avis Corporation and the Brand Champion program for the Kelly Group and Transnet. 

Ivan believes that the alchemy of theatre in the workplace challenges and encourages people to move beyond their everyday perceptions of both themselves and their fellow workers, consequently bringing a greater understanding and cooperation to the workplace.

Maya Pandya, MBA

Maya Pandya is a Development and Test manager for IBM. She is a high-energy leader with nearly 15 years of experience developing and supporting Enterprise systems. She loves to solve big problems and learn new technologies. She has served in various roles in the Tech industry including partner management, customer support, and product development. 

As an Assistant Lecturer at the UC Berkeley-Haas School of Business and a certified Executive Coach, her focus is to help people find their authentic selves and improve their interpersonal communications. She has taught workshops to MBA students and corporate executives around the world. She is an active volunteer as a youth mentor, tutor, and community organizer. She is a founder of FremontSIP, a parents group committed to enhancing Fremont public school’s Spanish Dual Immersion program - partnering with parents, district staff, and the school board to effect change. She received her MBA from UC Berkeley Haas School of Business and a B.S. in Computer Science and Engineering from UC Davis. Most important of all, she is mother to an awesome 9 year old girl who inspires and challenges her daily. 

Amita Sophonthiratana, MBA

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Amita Sophonthiratana is an executive coach and communications professional specializing in branding, particularly in the apparel and consumer goods industries.

Amita graduated from the Executive Coaching Institute in 2013. Through the Executive Coaching Institute program Amita discovered that coaching is a gift and has committed herself to give that same gift to others who seek to better themselves with commitments. She recognizes the impact of coaching techniques to access untapped potential, and that there is much more to life once an individual's full potential is being unleashed.

She received her MBA from the McCombs School of Business in Austin, Texas in 1999. She received her BA with honors from the school of Communication Arts at Chulalongkorn University in Thailand where she studied Mass Communications.

Amita has extensive experience working within the Apparel and FMCG businesses prior to joining BP Castrol in 2013. She has worked with VF Corporation in New York and Atlanta for four years and in the Foods and Ice Cream brands at Unilever for eight years, of which she has led the brand building for Knorr and Wall’s locally and for Cornetto’s brand development regionally. 

Janette Mujica

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Janette is an executive coach based in Montreal, Canada. She is a 2014 graduate of UC Berkeley’s Executive Coaching Institute, and an affiliate of BECI’s Canadian team.

A yoga instructor and dedicated practitioner of the martial arts including Judo, Capoeira, Budokon, Brazilian Jujitsu, Muay Thai and Krav Maga, Janette believes that the dojo is a unique laboratory for developing the listening skills, presence, and the team values necessary for success in the corporate professional environment. Developing an awareness of all possibilities in any given situation, whilst maintaining focus, flow, and mutual respect, is a core component of her coaching practice. Janette’s clients learn conscious, intentional, and timely decision-making skills in order to develop their leadership potential.

In her role as a coach and consultant, Janette draws upon her extensive experience working in the financial, legal, and client services industries.

The daughter of Chilean immigrants to Canada, Janette is a native Spanish speaker, educated in the French Quebec school system, and has worked in multiple Anglophone business environments. As a result, she believes active listening is crucial to understanding her clients’ perspectives in order to better serve their coaching needs.

Sana P. Milochevitch, MA

Sana is an executive coach and leadership development consultant, an anthropologist, and a martial arts teacher. He is a 2014 graduate of UC Berkeley’s Executive Coaching Institute. 

Sana has conducted comprehensive research in the field of identity dynamics: how we define ourselves as individuals or as groups, and how this influences the way we adapt to change. In parallel, since 2001, Sana has been training elite athletes and teaching students to increase their self-confidence and develop strategies for success beyond their perceived limitations, through the principles of the martial arts. He applies this unique combination of theory and practice in his executive coaching.

Sana believes in the power of choice in pursuit of excellence. He helps his clients to uncover their potential, and equips them to enhance performance and maximize their impact in the workplace and in their personal lives. 
A Master of Arts graduate in Anthropology (Université Laval), Sana holds a Bachelor of Arts degree in East Asian Studies and Anthropology (Université de Montreal), and is state-certified in Sports Education by the French Ministère de le Jeunesse et des Sports. He is a doctoral candidate in social and cultural anthropology (Université Laval).

A native of France based in Montreal, Canada, Sana has also lived and worked in Central African Republic, Thailand and Denmark.