Oakland Zoo Executive Team

Nik Dehejia
Chief Executive Officer

As a 18-year veteran of Oakland Zoo, Nik Dehejia’s role as Chief Executive Officer is integral to all Zoo operations. Nik’s passion for advancing the Zoo into the future, both in wildlife conservation and as a visitor destination, has been key to establishing Oakland Zoo as we know it today.

As an elected member of several prestigious Association of Zoos and Aquariums committees, as well as a board member of Outdoor Afro and Visit Oakland, he's guiding the Zoo's future direction centered around the inextricable connections among animals, wildlife, and the natural environment. All within the focus of three major areas – people, animals and planet, Nik's ongoing leadership has and continues to strengthen Oakland Zoo’s financial position, relationships with the greater community, and prioritization of equity and inclusion across the organization.

In a massive undertaking representing the best in Oakland Zoo’s collaboration with community leaders, political leaders, and the diverse members of our Bay Area community, Nik oversaw the development of the California Trail,  a $71-million-dollar project that included a Leed-certified Veterinary Hospital (opened in 2012), a Biodiversity Center (opened in 2013), and the California Trail (opened in 2018).

As a multi-decade resident in the Bay Area, Nik holds an MBA from U.C. Berkeley. Before Oakland Zoo, Nik worked in international public policy at the World Resources Institute and World Bank, in corporate responsibility at Business for Social Responsibility, and in a more traditionally commercial role at Levi Strauss & Co.

Kristin Heller
Senior Vice President, Revenue and Impact

Kristin is responsible for fueling the Conservation Society of California via philanthropy, membership and admissions, and expanding the Zoo's impact in education, conservation, and access. She began with Oakland Zoo in 2019 as the Vice President of Development.

Previously, Kristin was the Associate Director for the Exploratorium's Capital Campaign, raising funds for programs and endowment.

As a Senior Consulting Director for Olive Grove Consulting, a nonprofit capacity-building firm, Kristin’s work in strategic planning, fundraising, and governance helped organizations like the Friends for the Alameda Animal Shelter and Bay Area Open Space Council.

Kristin earned her Masters in Business Administration from the University of San Francisco, and Bachelors degrees in Art History and Anthropology from UC San Diego

Adam Miller
Chief Financial & Administrative Officer

Adam Miller comes to the Oakland Zoo with over 20 years of finance and operations leadership experience in the education sector, where he worked for mission-driven organizations supporting the growth of high-quality opportunities for all students from kindergarten through college. He has presented on finance, strategic planning, and operations at conferences across the country and has served on multiple non-profit boards including Learn Fresh and Stanford Associates Board of Governors. At Oakland Zoo, Adam oversees all aspects of finance, operations, and park service functions.

Adam holds a B.A. in Sociology from Stanford University, an MA in Sociology from the University of California - Los Angeles, and an MBA from the University of Southern California. Adam was born and raised in the East Bay and still calls it home, living in Oakland with his wife and daughter.

Colleen Kinzley
Vice President Animal Care, Conservation, and Research

Colleen Kinzley directs the Zoo's animal care, wildlife conservation, and research programs. In this role, Colleen has driven a cycle of continuous growth and improvement for animal welfare at the Zoo. This means she also helps a staff of over 50 people responsible for habitats and animal welfare to continuously grow their understanding of what makes a healthy and emotionally-positive environment for all animals. Under her guidance, Oakland Zoo has become known for its spacious habitats and behavior management programs which provide animals with freedom of choice and control over their environment.

In 1990, Colleen came to Oakland Zoo as the manager of the Zoo's elephant program, transitioning it into a protected contact system where keepers only use positive reinforcement with elephants and are always protected by a barrier. During her time at the Zoo, she has overseen the development of the African Savanna, Children's Zoo, California Trail, expansion of the elephant habitat, as well as construction or remodeling of many other habitats to continually improve animal experience. 

While earning her Master's degree from Cal State East Bay, she participated in research both at the Zoo and in Namibia studying elephant communication and social behavior. Colleen’s commitment to vital research relationships deepens the Zoo’s ties to research facilities, animal welfare advocates and leaders in the conservation of animals in the wild. 

Michelle Myers
Vice President of People and Culture

Every adventure to Oakland Zoo is an insightfully-choreographed encounter designed by Michelle and her team and executed in collaboration with every department to achieve one goal:to positively connect visitors to the Zoo with nature by offering experiences that will last a lifetime. 

A former member of Actor’s Equity with an extensive background in theater and in visitor engagement at such high-profile vacation spots, Michelle works with her team to make every moment in the park magical. This requires not only creativity in design and story, but a clear focus on the value of the individuals who make those ideas a reality. Michelle works to develop professional growth opportunities for her team, from staff to volunteers to docents. 

Michelle’s ultimate goal is to utilize her background and her fellow Leadership Team members to cultivate an amazing group of individuals and whose passion and personalities shine for everyone welcomed into the Oakland Zoo family.

Amy Gotliffe
Vice President of Conservation

Amy Gotliffe has a mission to connect human beings to nature, envisioning a planet where all species live in peaceful co-existence, which makes her a perfect fit for Oakland Zoo. 

With certifications in humane education, nature-based leadership, conservation psychology, human-wildlife conflict resolution, nature interpretation and influencing conservation behavior change, Amy’s work at the Zoo focuses on reconnecting people with our sense of belonging to the natural world and better understanding our impact on it.

As VP of Conservation at Oakland Zoo, she coordinates events and projects to meet the conservation goals of the Zoo around the world and in the Bay Area. These efforts range from building a Conservation Speaker Series, to leading international conservation expeditions to producing awareness events to coordinating the Zoo's on-site sustainability efforts. Amy drives massive and enthusiastic, inter-departmental efforts to conserve biodiversity around the globe and in our own backyards.

Dr. Alex Herman
Vice President of Veterinary Services

Dr. Alex Herman received her Bachelor of Science from the University of Minnesota (Mpls-St.Paul), her Doctor of Veterinary Medicine from UC Davis, and graduated from the Veterinary Management Institute at Colorado State University, Fort Collins.

Prior to becoming Oakland Zoo’s full-time Vice President of Veterinary Services in September 2019, she spent fifteen years providing medical, surgical, and dental services to the Zoo in a part-time capacity. Her veterinary skills were invaluable to the California Condor Recovery team and all the animals at Oakland Zoo ­— from Amazon milky tree frogs to giraffes.  At the same time, she worked for more than two decades to develop a full-service avian, exotics, wildlife, dog and cat practice in San Francisco.

Her goals in leading Oakland Zoo’s veterinary team are to maintain and constantly expand the most intentional, effective, high impact culture and evidence-based veterinary care for both the animals under the Zoo’s stewardship and those that comprise our conservation work.

Dr. Herman lives in Berkeley with her husband and son. She cherishes the Oakland Zoo and is honored to provide the highest level of care for our fascinating and amazing animals.

Bob Westfall
Vice President of Park Services

Bob Westfall oversees the Public Safety/Security, Maintenance, Grounds, and Janitorial Departments. As a 25-year veteran of the Zoo, he has contributed to many Zoo projects and improvements through his extensive background in Park Safety, Law Enforcement, Loss Prevention, Contract Security, and Operations Management. 

Bob’s focus is squarely on maintaining the Zoo's reputation as a safe environment for its guests and their families. To achieve this, Bob works with employees to deepen employee professionalism and service excellence. In his previous roles with Oakland Office of Parks and Recreation, Oakland Police Department and Children’s Fairyland on Lake Merritt, he honed the skills that bring the joy of the Zoo and security for all members of the Oakland community together. 

Megan Sweet
Vice President of Learning and Engagement

Dr. Megan Sweet oversees education programming for the zoo. Megan is also an author and systems-thinker who has been in education for more than twenty-five years. Megan has served in numerous educational roles, including teacher, school administrator, and district leader. She also serves as an elected member of her local school board and is an internationally-recognized leader of mindfulness in education.

Megan’s academic and professional interests have focused on creating effective change in educational contexts. She has supported change initiatives at California's state, county, district, and school levels. She believes that when we approach educating our youth from the inside out by building a supportive and heart-centered connection with ourselves first, we have the confidence and resilience to tackle the important work of transforming our educational settings.

In addition to serving as a school board trustee, Megan is a Commissioner with the Commission on the Status of Women and Girls, a Northern California Regional Council Member with Brady United Against Gun Violence, and on the Advisory Council with the California State University, East Bay's Continuing Education program. Megan received her Bachelor's from UC Davis, her Master's from Stanford University, and her doctoral degree from Mills College. Megan was born and raised in the East Bay, and both of her parents grew up in Oakland.