Our Team

Dr. Branwen J Hennig

Executive Director GHPL
Virchow Foundation & Charité Center for Global Health (CCGH), Berlin, Germany.

Caleb Kumar

Data Scientist
Health Systems Innovation Lab (HSIL), Harvard TH Chan School of Public Health, Boston, USA.

Dr. Michael Bayerlein

Health Policy Scientist
‍Charité Center for Global Health (CCGH), Berlin, Germany.

As global health specialist, Branwen’s expertise covers the spectrum from research & development through to translation into policy & practice. She assumed directorship of the GPHL in spring 2024 and serves on the Board of Directors of MalariaNoMore UK. In previous roles Branwen consulted for TDR at the World Health Organization on implementation research in low-resource settings and was Interim Head of International Operations at Wellcome in London, UK, overseeing their Africa & Asia Programmes. Branwen's experience builds on leading her own research in infectious disease epidemiology at the MRC Unit The Gambia / London School of Hygiene & Tropical Medicine and beyond.

Caleb Kumar, a member of the global health policy team, is designing artificial intelligence (AI) tools for public health policy analysis. As student at Stanford University, he patented a machine learning technology, founding a company that won the University World Startup Cup in 2015 and was later acquired in 2021. Caleb was inject team lead of Stanford’s cyber defense team, and his research focused on improving opiate-related patient-provider communications. After graduation, Caleb worked on generative AI models at Medtronic. He co-founded several digital health apps, including iRecover for brain injury rehabilitation, IndexoRx to address pharmacy challenges, and Jaid to enhance EHR interoperability. Now at the Harvard HSIL, Caleb hopes to continue developing data-driven healthcare solutions.

Michael Bayerlein is health policy scientist at the Global Health Policy Lab, based at the Charité Center for Global Health. Previously, he worked as a policy advisor and researcher at the German Institute for International and Security Affairs (SWP) in the EU/Europe research group and was a fellow at the Kiel Institute for the World Economy. He holds a doctorate from the Faculty of Business, Economics, and Social Sciences at Kiel University, where he also completed the Masters programme in “International Politics and International Law” after earning a Bachelor’s degree in political science from the University of Mannheim. Michael’s work focuses on health policy, populism, and political economy, with a strong emphasis on quantitative methods.

Our Team

Dr. Branwen J Hennig

Executive Director GHPL,Berlin, Germany.

As global health specialist, Branwen’s expertise covers the spectrum from research & development through to translation into policy & practice. She assumed directorship of the GPHL in spring 2024 and serves on the Board of Directors of MalariaNoMore UK. In previous roles Branwen consulted for TDR at the World Health Organization on implementation research in low-resource settings and was Interim Head of International Operations at Wellcome in London, UK, overseeing their Africa & Asia Programmes. Branwen's experience builds on leading her own research in infectious disease epidemiology at the MRC Unit The Gambia / London School of Hygiene & Tropical Medicine and beyond.

Caleb Kumar

GHPL, Health Systems Innovation Lab (HSIL) at Harvard TH Chan School of Public Health, Boston, USA.

Caleb Kumar, a member of the global health policy team, is designing artificial intelligence (AI) tools for public health policy analysis. As student at Stanford University, he patented a machine learning technology, founding a company that won the University World Startup Cup in 2015 and was later acquired in 2021. Caleb was inject team lead of Stanford’s cyber defense team, and his research focused on improving opiate-related patient-provider communications. After graduation, Caleb worked on generative AI models at Medtronic. He co-founded several digital health apps, including iRecover for brain injury rehabilitation, IndexoRx to address pharmacy challenges, and Jaid to enhance EHR interoperability. Now at the Harvard HSIL, Caleb hopes to continue developing data-driven healthcare solutions.

Dr. Michael Bayerlein

Health Policy Scientist Charité Center for Global Health (CCGH), Berlin, Germany.