Core Team

Amy Adelberger, MPH


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Amy is the founder and CEO of Global Impact Advisors. She is responsible for the strategy and execution of GIA’s work. She works closely with her clients to creatively and efficiently solve complex problems. She is commonly seen as a connector and a facilitator – someone who is able to bring together different viewpoints to develop comprehensive programs aiming to achieve an impact on people’s lives.

She focuses the firm’s efforts on strategic execution – combining content rich project management with strategic thinking to help clients achieve their goals. These roles have been shaped and influenced through her background in design and public health. She brings a range of skills in program design and management, monitoring and evaluation, and implementation of multi-stakeholder public-private partnerships.

While at the Bill & Melinda Gates Foundation, she launched a partnership with the Chinese Ministry of Science and Technology and as the TB Program Manager was responsible for the successful execution of the TB program strategy. Amy holds a BA in History from Brown University and an MPH in Social & Behavioral Sciences from the University of Washington. Amy lives in California with her husband and three young children.

Scott Rosenblum, MS

Program Director

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Scott serves as the program director for GIA. As program director, Scott manages GIA’s work in family planning, climate, and HIV as well as other related projects in global health and monitoring and evaluation. Scott has worked across a number of projects including two strategic evaluations of key partnership organizations in global health, improving the efficiency and effectiveness of the HIV/AIDS response, increasing access to family planning technology, cataloging and evaluating work that bridges the public/private sector divide, and other initiatives in global health.

He is an experienced analyst and program manager with expertise in global health, healthcare (including new models of care, hospital readmission reduction, and workforce development), education, disability services, and the environment. He has worked with a diverse range of organizations from large private foundations tackling global issues to community-based human services organizations. His services include research, analysis, strategic planning, program evaluation, and project management.

Previously, he worked at the Bill and Melinda Gates Foundation in Seattle, WA, the Jewish Healthcare Foundation and the Grable Foundation in Pittsburgh, PA, and at Independent Sector in Washington, DC. Scott graduated with highest distinction with a Masters in Public Policy and Management from Carnegie Mellon University and magna cum laude with a BA from Duke University in Public Policy and Economics.

Leslie Chang, MPhil


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Leslie is an Associate at Global Impact Advisors with a background in management consulting and social impact. She has five years of consulting experience in Los Angeles, San Francisco, and London across the philanthropic, public, and private sectors. In her current role, she works with international development foundations on strategic planning and M&E engagements, with a geographic focus on China and a sector focus on climate change.

As an economic and social historian, her research interests and subject matter expertise focus on bringing together environmental sustainability, global health, and impact investing through the institutional lens of economic development.

Leslie holds degrees from the University of Cambridge (MPhil in Economic and Social History) and University of Southern California (BA in History).

Maggie Niu, BA

Program Analyst

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Maggie is a Program Analyst at Global Impact Advisors. She provides analytical support across GIA’s portfolio. Maggie has contributed to projects on family planning, VMMC, and global health consortiums.

Prior to joining GIA, Maggie worked as a research assistant in the Stanford Political Science Department and the Stanford Law School, experiences that fueled her interests in health inequities and social responsibility in policy-making. Maggie received her BA in International Relations and Economics from Stanford University.

Becky Genauer, MA

Operations Manager

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Becky Genauer is the operations manager at Global Impact Advisors. As operations manager, Becky plays an integral role in providing support in all aspects of the business, focused on financial management, contract management, operational support and human resources support.

Prior to joining GIA, Becky worked as a Nurse Practitioner in Orthopaedic Surgery in New York City for 8 years. Having moved to the Bay area in 2015 she led Operations at Palo Alto Menlo Park Parent Club, as well as stepped up into the role of Director of Scheduling for Alpine Strikers, FC. Becky’s mixture of medical knowledge and operational experience has been a perfect fit for GIA.

Becky has a Masters in Nursing from Columbia University as well as a broad set of Operational Skills from running Operations at local non-profit organizations in her community.

Consultants and Advisors

Gale Berkowitz


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Gale Berkowitz is an advisor to Global Impact Advisors. Gale provides monitoring and evaluation advice to GIA and our clients. She has led the evolution of organization-wide strategy, grant-making, and evaluation and learning systems at three major foundations in the US and Canada, overseeing this work for organizations tackling issues including education and training for those in poverty, financial inclusion, reproductive health, and climate change.

Previously, Gale served as the Director of Evaluation and Learning at the MasterCard Foundation, Director of Evaluation at the David and Lucile Packard Foundation, and Director of Evaluation and Organizational Learning at the Charles and Helen Schwab Foundation.

She has extensive teaching experience and is the writer or co-author of more than fifty publications. Gale received her Doctorate in Public Health from the University of California at Berkeley and her BA in Psychology and Creative Writing from Johns Hopkins University.

Dirk Calcoen, MD

Senior Advisor

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Dirk is a senior advisor to GIA. Dirk advises global executives in global health and development institutions, as well as healthcare and life sciences companies. He has over 25 years of experience in the healthcare industry, including over 15 years as a management consultant with The Boston Consulting Group (BCG) where he led global health projects focused on Malaria, Tuberculosis and other Neglected Diseases.

Before BCG, he worked as an international public health physician mainly in drug donation programs. He designed and coordinated a program to eliminate river blindness in Sudan, collaborating with WHO, World Bank and Merck & Co. As the primary consultant to Pfizer’s drug donation initiative for trachoma, a blinding disease, he crafted the strategic plan and the governance process and started programs in Tanzania, Mali and Morocco, working with the ministries of health. He started his public health career working with Doctors without Borders in DR Congo.

Dirk trained as a public health physician in Belgium, South Africa and the U.K., and has an MPH (Harvard) and MBA (Stanford).

Katrin Kalischer-Stork, MBA, MA

Senior Advisor

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Katrin Kalischer-Stork is a senior advisor to GIA. In this capacity she has assisted global foundations in issues spanning country introduction planning of health care products, country opportunity assessments, and investor coordination planning. Katrin is also working with organizations in the sustainability and food security sectors.

Katrin is a seasoned independent Strategic Advisor, based in Los Angeles. She has spent the past two decades consulting her clients on a diverse set of strategic issues spanning competitive strategy, corporate strategy, growth and diversification strategy as well as corporate development and operational optimization. Katrin has extensive international experience, having served clients across the globe, including the US, Western and Southern Europe, Central Europe, the Middle East and South Africa.

Prior to becoming an independent consultant, Katrin held a Partner position at HighPoint Associates, a boutique consulting firm. Previously, she had spent six years as a Senior Principal at BCG in the firm’s Health Care practice, largely focused on commercial strategy. Prior to her time at BCG, Katrin was Senior Leader in the Life Sciences sector of the Monitor Group where she spent nine years.

Katrin holds a Masters degree in Information Sciences (with distinction) and a Masters degree in Japanese Sciences (with distinction), both from the Freie Universität Berlin in Germany, and has studied at Kyoto University in Japan. Katrin earned her MBA at INSEAD in France.

Sarah Emmert, MBA


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Sarah is an Advisor to Global Impact Advisors (GIA). Working with GIA, Sarah has led a wide array of strategy projects for global health and development clients to deepen their investment impact; amongst others this includes strategic planning, R&D investment decisions, portfolio evaluations and non-profit mergers & integrations.

Sarah previously worked for The Boston Consulting Group (BCG) as both a Consultant and a Global Sector Manager in BCG’s Consumer Practice Area. Sarah’s consulting experience is supplemented by multiple operational and strategy roles in consumer goods and tech.

Sarah holds an MBA with Distinction from the Kellogg School of Management at Northwestern University as well as a Bachelor of Commerce with honours from the University of British Columbia.

Annika Grever, MPA


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Annika Grever is a Consultant with Global Impact Advisors. She has ten years of experience in monitoring, evaluation, and analysis for philanthropic and government organizations. Annika supports results-oriented strategy development, implementation planning, program monitoring and evaluation, and ongoing data informed decision-making.

Annika has led portfolio-level evaluations, provided evaluation and analysis support to consortium and partnership efforts, and developed program monitoring frameworks and systems across a range of global health and development programs.

Previously Annika worked for the Bill & Melinda Gates Foundation as a program officer for measurement, learning and evaluation for four years in their global health division. In this position Annika led collaborative team development and consensus on long-term strategy goals that served as the foundation for results-oriented strategies. She collaborated with global grantees on investment design to support alignment with long-term strategy goals and ensure monitoring and outcome data were available across a portfolio of investments to inform strategic decision-making. She also collaborated with external evaluators to develop the scope of work and review work products and deliverables on critical investment evaluation projects.

Annika has a BA in Economics/Math from Western Washington University and an MPA in International Development from Harvard Kennedy School.

Michaela Leslie, MPH, MPA


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Michaela employs her passion and creative insight to GIA’s work in program management, strategy, and evaluation framework design. Her skills as a communicator and facilitator help to engage clients and stakeholders in participatory discussions and collaborative problem-solving. Additionally, Michaela‘s expertise in digital media lends to her creative outlook for qualitative analysis and the development of innovative storytelling communication methods.

Michaela’s previous work has led her to partner with many local and global organizations such as the Global Fund for Women, Youth Together, and Engender Health.

Michaela holds an MPH and MPA from the University of Washington and a BFA from the University of New York, Tisch School of the Arts.

Renee Ridzon, MD


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Dr. Renee Ridzon works as an advisor with Global Impact Advisors. She is a technical expert, trained as a physician in internal medicine and infectious diseases with over 20 years of experience working in the fields of Global and Public Health.  Previously serving as an Epidemic Intelligence Officer at the US Centers for Disease Control and Prevention, Renee investigated outbreaks of infectious diseases. She also worked with the Bill & Melinda Gates Foundation overseeing a portfolio of grants related to HIV prevention. She currently works with CDC/PEPFAR and Office of the Global AIDS Coordinator providing technical assistance for the PEPFAR voluntary medical male circumcision program. Additionally she remains involved with the Gates Foundation, the WHO and UNITAID participating in advisory groups and lending expert analysis where needed.  Renee received a BA in Biology from Wellesley College and her MD from St. Louis University.

Philip Setel, PhD, MA


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Philip is an advisor to Global Impact Advisors who is currently leading a program dedicated to improving the quality of civil registration and vital statistics systems globally. He is a global health evaluation expert with more than twenty years of experience. Philip has extensive qualitative and ethnographic research experience. He is trained as a medical anthropologist and has advanced training in epidemiology and demography and in-depth experience in measurement, monitoring, learning and evaluation of global health programs. As Deputy Director for Strategy, Measurement, and Evaluation at the Bill & Melinda Gates Foundation, he provided support for both domestic and international strategy areas. Philip holds a PhD and MA in Anthropology from Boston University and a BA in Anthropology and Sociology from Bowdoin College. Philip is based in Seattle.

Alison Tramba Whitten, MUP


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Alison is an Advisor to GIA. She has worked on low carbon cities in China, vaccine development, the Chinese regulatory environment, animal health, and family planning, to name a few. Her role represents a coming together of her backgrounds in management consulting with Bain & Co, international development, urban planning and systems design. Her planning experience has focused on the intersection of design with public health, housing, food systems, and risk mitigation in natural disasters.

Alison has worked professionally across the public, private, and non-profit sectors in Sub-Saharan Africa, Australia, and the US, with relevant projects in water-quality research, development of health infrastructure policy, energy and natural resources strategy and operations, and agricultural business development.

Alison holds a BS in Systems Engineering from the University of Virginia and a Master in Urban Planning from the Harvard Graduate School of Design.

Lila Cruikshank, MBA


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Lila is a contractor with Global Impact Advisors, contributing to the team’s work to support increased access to family planning technology, as well as to our work to provide management support to the implants access program, a multi-stakeholder public-private partnership.

She is passionate about increasing access to quality healthcare. In conjunction with International Partnership for Innovative Healthcare Delivery and Social Entrepreneurship Accelerator at Duke, Lila has led consulting projects working with the impact investing network Toniic, global health nonprofit Riders for Health, health supply chain startup Sproxil, and micro-insurance provider Naya Jeevan.

Lila previously worked with global health nonprofit Population Services International, spending four years in Mozambique designing and managing social marketing programs. She also worked as an MBA intern at The Bill & Melinda Gates Foundation.

Lila received her MBA from Duke University, where she was a Fuqua Scholar and a CASE i3 Fellow, and earned a certificate in Health Sector Management, and graduated magna cum laude from Brown University with an AB in International Relations.

Feven Tsehaye, BA


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Feven has extensive experience in working on social impact investments in agriculture and healthcare in Ethiopia. She has spent the past four years working at the Bill & Melinda Gates Foundation’s China then Ethiopia office, focusing on engagement models and mechanisms to increase private sector engagement in Africa. Her responsibilities included strategy development, investment planning, business development, deal sourcing and vetting opportunities, and managing relationships with key stakeholders in several foundation countries in Africa.

Prior to joining the foundation, Feven served as a fellow for Vittana in Peru, scaling-up product and service delivery for vocational education micro-loan programs. In previous roles, she worked as a management and operations Consultant for the Student and Exchange Visitors Program under the U.S. Department of Homeland Security leading the I-901 team.

Feven graduated with her MPA from Tsinghua University. Her thesis assessed the trends and social impact of micro-finance schemes for rural to urban migrants in Southern Ethiopia. She received her BA in International Development from American University.


Mia Lattanzi, BA


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Mia is a strong advocate for critically exploring intersections between health, poverty, and access to justice. Mia became interested in the potential for transformative change through public-private partnerships and reassessing supply chain dynamics during a collaboration with an environmental non-profit, where she assisted in strategy development and fundraising for a technological solution to address illegal deforestation.

Mia holds a BA in History from Stanford University.

Lani Marsden, MA


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Lani is a proven leader who is experienced in public health, education, philanthropy, and international development, and has a passion for organizational change. She brings skills in organizational strategy development and program design and management, experience working on HIV and healthcare delivery issues, and deep cultural knowledge from working in China for five years. At the Bill & Melinda Gates Foundation’s Beijing office, she contributed to a successful organizational strategy shift resulting in a three-fold staff increase. Lani brings a breadth of experience beyond the foundation, as she has worked with the World Bank on corruption investigations and with grassroots organizations on microfinance, capacity building, and community organizing. Lani holds an MA in International Economics and International Development from Johns Hopkins University and a BA with honors in International Relations from Stanford University. Lani is a consultant with McKinsey and Company.

Natalie Meyers, MPH


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Natalie has a diverse background in global health and development with experiences ranging from working with child soldiers in Uganda to establishing a social media strategy for a startup private foundation. Natalie previously served as an AmeriCorps volunteer in NYC and interned with the agriculture and nutrition teams at the Bill & Melinda Gates Foundation. She studied community health at Brown University, where she also played varsity volleyball. She studied Population Science at Harvard School of Public Health where she received her MS. Now a Presidential Management Fellow, she currently works in the Executive Secretariat at USAID in Washington, DC.

Sarah Raifman, MPH


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Sarah has a background in population sciences, with a focus on reproductive and sexual health and family planning. At GIA, she brought skills in quantitative and qualitative research, monitoring and evaluation, research and literature reviews and report writing. At the Population Council, Sarah worked on large-scale evaluations of the delivery of RH/FP services by community health worker models in Ethiopia, Ghana, India, Kenya and Pakistan. She has also evaluated availability and quality of reproductive health supplies in Ethiopia and supported UCSF in evaluating the use of a medical device to prevent maternal mortality in East Africa. Sarah holds a MPH in global health and population from Harvard University and a BA in Development Studies from Brown University. Sarah now works as a research program manager at the ANSIRH Bixby Center.