About CORE Group

CORE is the only player in its field that convenes the practitioners and public health professionals in global community health to share knowledge, evidence, and best practices, and then translates these into the real world with a direct impact, creating new standards in clinical and public health as it advances dialogue at the country and global levels.

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Mission & Vision

Nepalese mother feeding her toddler

Photo Credit: Hari Prasad Upadhyay, World Vision International Nepal

Improve and expand community health practices for underserved populations, especially women, children, and adolescents, through collaborative action and learning

Communities where everyone can attain health and well-being

Our Impact

CORE Group has worked since 1997 to advance the field of community health by developing case studies and analyzing research data from the field, creating training curricula and conducting workshops, developing monitoring and evaluation trainings and tools, fostering in-country collaboration, diffusing Innovations, and advocating for Community Approaches to Health

Who We Are


Lisa M. Hilmi, Executive Director

Lisa M. Hilmi
Executive Director

Lisa Hilmi has over 30 years of global health experience in over 20+ countries, employing both human rights and community-based participatory approaches to addressing health disparities for women, children and communities. As a nurse, researcher, and public health expert, Lisa has worked at multiple levels of global health, in policy, research, emergency relief and response, development, workforce development, health systems strengthening; from local to global levels. She has worked in development settings, led response to HIV/AIDS/STIs/GBV in refugee and conflict settings, and  developed policy for outbreaks, disasters, and epidemics in multiple countries. She has led over $180 Million of development, relief and rehabilitation efforts. Clinically, Lisa has worked in pediatric hospital, community, academic, and crisis settings, and has held leadership positions in the UN, Sigma Theta Tau International, INGOs, and foundations.

Her research focuses on geographical health disparities for adolescents in urban settings. She has a strong history of partnership and coordination with UN, INGOs, CSOs, and other stakeholders. She sits on the WHO PMNCH Board, the Steering Committee of the Child Health Task Force, the Board of Directors at the Academy of Nutrition and Dietetics Foundation, as well as other review committees.

She holds an MPH from Columbia University, a BSN and completing her PhD from the University of Pennsylvania School of Nursing, was a Jonas Nurse Scholar, is a Certified Pediatric Nurse, and holds a BA in Communications and Political Science from Villanova University.

Sheetal Sharma headshotSheetal Sharma
Senior Immunization Advisor

Sheetal Sharma, Public Health Ph.D. has 13 years’ experience of improving access to health in low- and middle-income countries, with a focus on immunization in last mile settings. Her work centers on field-based management and research of evidence-based health projects contributing to shortening information and data gaps towards effective decision-making and action both nationally and globally. She is a 2019 Harvard Medical School Research Fellow, currently the Vice Chair of the Civil Society Organisation Constituency Steering Committee – GAVI, the Vaccine Alliance, (2019-2021). She joined CORE Group in 2020 as a Senior Immunization Advisor.

Daniel Massamba Meboya headshotDaniel Massamba Meboya
Senior Advisor, Advocacy and Communications

Daniel Massamba Meboya, a Congolese national, has over 30 years of experience in corporate communications and public relations. He started his career in Communications/Information at the United States Information Agency (Kinshasa and Washington, DC offices) and developed his skills along the way in the broad spectrum of strategic communications. Most recently, Meboya had been the Team Leader of the Strategic Communication and Public Information Office at the United Nations Multidimensional Integrated Stabilisation Mission in Mali (MINUSMA) where he contributed to setting strategic communications, media relations, and public relations standards which led the Mission to gain trust and strong acceptance among local populations. 

He previously worked as Communications Specialist/Expert at the United Nations Human Settlements Programme (DR Congo), World Vision (South Sudan), Nile Basin Initiative (Uganda), The Great Lakes Parliamentary Forum on Peace (Kenya), United Nations Development Programme and Save the Children-UK (DR Congo).

Meboya holds a Master’s Degree in Communication Science & Leadership from the University of Missouri, Kansas City, USA.

Comfort Siodlarz Director of Finance & AdministrationComfort Siodlarz
Director of Finance and Administration

Comfort has over 16 years of financial and technical experience with nonprofits. She has an in-depth understanding and experience in implementing programs by donors such as USAID, DOS, USDA, DFID, UNHCR among few. Over the years, she has developed strong skills in managing and handling financial reports, donor reports, billing, invoicing, contracts and procuring goods and services. She enjoys developing operational and proposal budgets and monitoring awards and grants from both the field and head quarter level. She has lived and worked overseas and has a diverse skills in working with people from many different backgrounds. Comfort holds an MBA in finance from Johns Hopkins University and a BA in accounting from Central University in Accra, Ghana. During her personal time she enjoys building things including home improvement projects.

Patras Yaqoob headshot Patras Yaqoob
Part-Time Accountant

Patras is an accomplished accountant, and enjoys using his skills to contribute to meeting the objectives of CORE Group. He graduated from the Pakistan Adventist Seminary & College with a Bachelor’s Degree in Accounting. He also has Master’s degree in International Development focus on International Development for NGO’s from Andrews University Michigan.

He is obsessed with all things tech-related and spends his free time developing his own personal skills to advance his career. He enjoys watching documentaries about the universe, nature and research and about advancing technologies to improve human development. He loves home grading, walking, visiting nature reserves and traveling to different countries. His origin is Indian and enjoys Indian food as well as Columbian food.

Operations and Membership Manager

Enenbach headshotElías Enenbach
Advocacy and Communications Manager

As Advocacy and Communications Manager, Elías Enenbach leads CORE Group’s communications efforts and builds collaborative relationships with partners and stakeholders, with a focus on immunization and advocacy. In this capacity, he develops communications that translate health information into effective language for diverse audiences and actively engages global and regional partners, CORE Group members, civil society organizations, and the media. Prior to joining CORE Group, Elías developed communications at international health research and advocacy organizations including the Guttmacher Institute, Vital Strategies, and International Planned Parenthood Federation/Western Hemisphere Region. In these roles, he collaborated with partners in Latin America, Africa, and Asia. Elías previously performed marketing and communications at diverse organizations after beginning his career in Spanish-language and bilingual book and journal publishing.

Elías cares deeply about equity and global well-being. He holds an MA and MPhil from Yale University, where he taught Spanish and studied Latin American literature in Spanish and Portuguese. He received a BA in Hispanic studies and a BMus in music performance from Northwestern University.

Avani Duggaraju headshotAvani Duggaraju
Communications and Knowledge Management Coordinator

As the Communications and Knowledge Management Coordinator, Avani contributes to strategies to strengthen communication and knowledge sharing between CORE Group, its membership and the broader International Community Health Network. She has experience working in health communications and behavior change research both domestically and internationally. She has previously worked with the London School of Hygiene and Tropical Medicine on a project examining women’s sanitation vulnerabilities in southern Tanzania and interned at an HIV/AIDS non-profit in India. Avani received her MSPH in Social and Behavioral Interventions from the Department of International Health at Johns Hopkins Bloomberg School of Public Health and her BS from the University of Connecticut. She enjoys dance, travel, reading, and listening to K-Pop.

David Imbago headshotDavid Imbago Jácome
Technical Programs Officer

David has almost ten years of experience working with civil society organizations related to health and youth engagement. He was President of the National Association of Medical Students in Ecuador and General Assistant for the Americas Region at the International Federation of Medical Students’ Associations (IFMSA). After finishing medical school, David became a member of the Youth Coalition for Sexual and Reproductive Rights, being involved in high level advocacy for young people’s sexual and reproductive health and rights. As a medical doctor, he worked for a year in a rural community in the Ecuadorian Amazon Rainforest in a primary care facility, working with indigenous communities in remote locations.

Currently, David is a Board Member of the Partnership for Maternal, Newborn and Child Health representing the Adolescent and Youth Constituency and Vice-president for Development at the International Youth Health Organization. David holds an MD from the Pontificia Universidad Catolica del Ecuador and is also an MPH candidate at the Pompeu Fabra University in Barcelona.

Martha FernandezMartha Fernández Albornett
Community Engagement Specialist/Especialista de Participación Comunitaria

Graduated in Human Resources, with more than 13 years as a Human Rights Activist especially in the Venezuelan community in Peru; Promoter of social aid projects, humanitarian assistance, and counseling for the Venezuelan community’s institutional relationships achieving alliances with UNHCR, IOM, UNDP, Save The Children, Plan International, Humanity & Inclusion, among others, to promote social and labor integration, and economic of Venezuelans in Peru. She has held leadership positions in civil society organizations of the Venezuelan community, being the former Executive Director and founder of Unión Venezolana in Peru. She has been a consultant for CARE PERU; Fundación Ayuda en Acción, and Migratory Specialist of the NGO AGTR. Currently, president and founder of the Asociación Protección Población Vulnerable (APPV), whose purpose is to actively participate in the promotion of a better quality of life for the Peruvian and foreign population, migrants, and refugees who live in Peru.

Sandra Yu headshotSandra Yu
Knowledge Management and Communications Intern

Sandra Yu is a senior at Vassar College, where she is majoring in biochemistry with a correlate in analytical philosophy. Her interest in public health advocacy began when she worked with Asian survivors of female genital cutting during her internship with Sahiyo. Previously, Sandra worked extensively in clinical research with a focus on emergency management. She hopes to combine her interests in public health, advocacy, and clinical research as she matriculates to the Columbia Mailman School of Public Health for her MPH.

Manu Simriti Bhandari headshot Manu Simriti Bhandari
Management and Communications Intern

Manu Simriti Bhandari is a rising 2nd-year student at Rollins School of Public Health at Emory University, where she is pursuing her MPH in Global Health on the Community Health Development track with a focus in Human Rights. She is also currently leading marketing and website support for a nonprofit called Posana. Her previous work has focused on maternal and child healthcare, youth advocacy, and public health policy reform. Manu aspires to pursue a career in global health policy, human rights, and advocacy upon graduation.