Clinical Professor of Neurosurgery George Washington University School of Medicine and Health Sciences Washington, D.C. Adjunct Professor of Global Neurosurgery Barrow Neurological Institute Phoenix, AZ Dr. Rosseau is Clinical Professor of Neurosurgery at George Washington University School of Medicine and Health Sciences in Washington, D.C. She also serves as Adjunct Professor of Global Neurosurgery at Barrow Neurological Institute in Phoenix, AZ. She has been involved in Global Neurosurgery all her career and is a leader in the Global Surgery movement. She has authored over 3000 peer-reviewed publications and been invited as Visiting Professor at over 20 universities. She is Global Champions Editor for World Neurosurgery, and Section Editor for Global Neurosurgery forNeurosurgery. Re: current research funding, she is co-PI on 2 NIH grants that are establishing TBI Registries in Zambia, and PI on a GW Equity Institute Grant to study surgical training in Africa. She is co-Founder of the Global Alliance for the Prevention of Spina Bifida-F(GAPSBIF), which is working with the member states of the World Health Organization (WHO) to eliminate Spina Bifida, one of the humanity’s most serious congenital defects. She has served as an officer of the WFNS Administrative Council, and as Chairman of the World Federation of Neurosurgical Societies World Health Organization Liaison Committee (WFNS-WHO). She has long served on the Board of Directors of the Foundation for International Education in Neurosurgery (FIENS) and of ThinkFirst, the International Head and Spine Injury Prevention Program. She has also been elected to leadership positions in the American Association of Neurological Surgeons (AANS)and the Société de Neurochirurgie de Langue Française (SNCLF). She is on the Advisory Board of the National Churchill Leadership Center and was invited by the Speaker of the House of Representatives to give official remarks on Churchill at the U.S. Capitol. She is a lifetime Board Member of Interfaith America, the leading religious pluralism organization in the country. She has been the Honored Guest of Neurosurgical Society of Australia and the Brazilian Academy of Neurosurgery. In 2021, she was honored with the AANS Humanitarian Award. Dr. Rosseau is married to orthopedic surgeon, Richard Rosseau. They have two children and enjoy travel, marathon running and history.

Daniel Peterson is a retired principal of ZS Associates, a global professional services firm that Dan joined as employee number four in 1984 and helped grow to a global firm of over 14,000 employees in 35 offices in 15 countries today. ZS helps companies use data to make better decisions in sales, marketing and other fields, with deep experience in health care and other fields. Dan has served clients in 31 countries, and traveled to over 100 countries and territories. Today, Dan serves as Vice President of Finance & Operations (CFO/COO) of his former high school, Loyola Academy, in Wilmette, Illinois. Dan joined the Board of G4 Alliance in 2019, and has served as Treasurer and then for over four years as Executive Director (Interim), and now as Vice Chairman of the Board. Dan has a bachelor degree from Drake University and an MBA from Northwestern University’s Kellogg School. Dan is a certified public accountant and a private pilot, and resides in Glenview, Illinois.

Stephanie Murphy has significant experience in the accounting field, including nonprofit financial management both on staff as well as on Boards. Ms. Murphy joined the G4 Alliance Board of Directors in May 2025.

CHARITY CHENGE, M.B.B.S, MPH, MSc, DrPH Dr Charity is a seasoned Public Health Specialist and Health Systems Strategist with primary training as a physician, and advanced training in public health, health policy, health planning and public health leadership. She is the 2023 recipient of the Arthur B. Holzworth award in Public Health Leadership conferred by the Gillings School of Global Public Health, University of North Carolina at Chapel Hill. She has amassed twenty-five years of progressive public health experience, including leadership roles, spanning international, national, and sub-national positions across a range of Strategic planning, Policy development, Disease Control, Maternal & Child Health; HIV Prevention, Care and Treatment; Adolescent Health and Health Systems Strengthening (HSS) Programs. She has worked at the United States Centers for Disease Control and Prevention (US CDC), at Catholic Relief Services (CRS) an International Development & Relief Agency; at the Geneva headquarters of the Global Fund for AIDS, Tuberculosis and Malaria, and currently at the Bill and Melinda Gates Foundation where she leads complex health portfolios (with a combined value of $141.6M+) through all stages of the funding cycle: concept design, proposal coordination, grant negotiation, implementation oversight, performance management, fiduciary and reputational risk management. She deploys consensus building skills in multistakeholder engagements that are a necessity in global public health. Two of Charity’s proud achievements include co-leading Nigeria’s successful roll out of the Early Infant Diagnosis (EID) of HIV using dried blood spots (DBS), an innovative and transformative initiative, resulting in an award by the US Department of State in Nigeria, in recognition of her role; Second is leading the Gates Foundation’s catalytic support to seven Nigerian states to install and adopt the Group Antenatal (G ANC) model which has recorded 1,028,766 pregnant enrolees across 81,473 cohorts formed between Jan 2021 and Feb 2023. The government of Malawi is now learning from the G ANC adoption in Nigeria to inform their own adoption. Charity has built and managed multi-culturally diverse teams in fast paced settings to deliver complex and ambitious strategic mandates. She has successfully managed teams that were diverse across social norms, ethnicities, race, academic backgrounds, religious affiliations, and technical expertise. She has received structured training in culturally sensitive team building, and in applying cultural competencies in public health practice and leadership. She is a life-long learner and learns from everyone and from every situation. She leads with empathy, with a transformational mindset, and with authenticity. She is undeterred by ambiguity, and intentional about transforming initial ambiguity into functional form. She is an incurable optimist in her public health practice and leadership, and her approach to life. Her personal philanthropy includes board service on three non-profit boards. She founded The Next Hundred Initiative and co-founded Women in Public Health Leadership, Africa (WIPHLA), and the Centre for Health Systems Support. Charity completed her medical training at the College of Medicine, University of Lagos. She holds a master’s in public health (MPH) from the same institution and holds an MSc in Health Policy, Planning and Financing from the London School of Economics (LSE) and the London School of Hygiene & Tropical Medicine (LSHTM), both of the University of London. She is certified in entrepreneurial management and completed her doctoral studies (DrPH in Public Health Leadership) at the Gilling’s School of Global Public Health, University of North Carolina at Chapel Hill. USA.

Evelyn is a distinguished global healthcare leader with over 20 years of experience driving strategic growth and operational excellence across diverse healthcare industries. With a robust background in business development, business strategy, strategic planning, and international market expansion, Evelyn has consistently delivered transformative results in competitive global markets.

As Executive Director of PQMD, Elizabeth (EJ) Ashbourne is responsible for furthering the organization’s commitment to championing and advancing standards in medical supply and service donations by developing the vision, strategy, and execution of the organizations five pillars of work. Prior to joining PQMD, EJ was most recently the Managing Partner for EJA Consulting, a small private firm specializing in strategic planning, fundraising, international development and joint venture support, mission driven event management, and all aspects of non-profit turn-around. Prior to that, EJ spent 17 years at the World Bank in several senior level positions, in the areas of private sector partnerships, global public health, infectious disease, and health management information systems. Additionally she was a senior operations officer in the Office of Corporate Reform and Human Resources. In the area of health, EJ held the position of Lead, Global Health Information Programs for the World Bank and the Health Metrics Network at the World Health Organization; led the work on eHealth and mHealth in the Health Anchor of the Bank and contributed to research on a common metric for donor agencies, development partners and countries to measure their investment in health information. At the World Bank, she also spent many years working closely on issues specific to engaging the private sector in the fight against HIV/AIDS as the focal point for private sector partnerships with the World Bank’s Africa Region HIV/AIDS programs. Her role was to develop and implement the mechanisms through which the private sector can access financial and technical resources from the Bank’s initial 2billion dollar investment in HIV/AIDS. She has also worked for World Learning as a Country Director, overseeing a wide range of USAID capacity building programs in Eastern Europe and served as senior coordinator for international cooperative education programs at American University among other positions. EJ holds an MA in International Education, with an emphasis on Organizational Management from American University in Washington, DC and a BSc in Communications and History from Ithaca College, Ithaca, NY.

Dr. Ruben Ayala, M.D., MSC, is a public health physician from Panama with more than 30 years of experience in advocacy and humanitarian assistance. During his career with Operation Smile, he has planned, executed, and overseen surgical programs in more than 40 countries. Dr. Ayala also guided the establishment of Operation Smile foundations in low- and middle-income countries, offering year-round health services to patients and families affected by cleft conditions. Throughout the years, Dr. Ayala has fostered collaboration between governments, nongovernmental organizations, industries, communities, universities, and other members of civil society. He served as Operation Smile’s Chief Medical Officer, focusing on the evolution of standards of surgical care for patients requiring reconstructive surgery. He joined the official delegation of the government of Vietnam to the World Health Assembly in 2015 and 2017, helping align the country’s support for global surgery and anesthesia. Dr. Ayala currently serves as Operation Smile’s Chief Policy and Advocacy Officer. He is also board Past-President of the Permanent Council of the G4 Alliance and represents Operation Smile at the Global Initiative for Children’s Surgery, the Global Health Council, the Global Health Equity Network of the World Economic Forum, and the United Nation’s Economic and Social Council.

Dr. Alfredo Enrique Borrero Vega, is an Ecuadorian neurosurgeon and politician. His educational journey includes a Diploma in Health Administration from Harvard University (2011), a Spinal Surgery Fellowship from Klinikum Benjamin Franklin in Berlin, Germany (1994), and a Doctor of Medicine and Surgery from the Catholic University of Cuenca, where he graduated with honors (1973-1980).

Ken Davis helps his health care clients design, structure and grow their businesses. He represents physicians, hospitals, ancillary service companies and other health care and e-health providers and businesses in transactions and regulatory matters. With decades of experience and ranked as a leading lawyer by Chambers USA: America’s Leading Lawyers for Business, Ken is a trusted legal advisor for his health care clients’ businesses. Ken is one of America’s best-known attorneys, and frequently lectures, in the area of radiology, having represented numerous radiology groups of various sizes, imaging center owners and operators, hospitals, and other businesses involved in various capacities within radiology. He has also represented many radiology groups in transactions with physician practice management companies and other consolidators.

Dr. Laura Hoemeke is a global health consultant with long-term experience in advocacy, communications, and program design and management, including 15 years of residence in Francophone Africa and short-term assignments in Asia and throughout East, West, and Central Africa. Dr. Hoemeke is the president of Hoemeke Global, Ltd., serving as a consultant to the Bill & Melinda Gates Foundation, USAID, WomenLift Health, the World Bank, the World Health Organization, and several nongovernmental organizations and associations. She provides technical assistance in strategic communications and advocacy, program design, and program monitoring, evaluation, and learning. Prior to becoming an independent consultant in 2019, she worked for IntraHealth International, USAID, Africare, and the US Peace Corps. With significant experience in health policy development and analysis, Dr. Hoemeke’s passion is working with countries to support country-led health systems strengthening. She has technical expertise in family planning, reproductive health, HIV/AIDS, maternal and child health, nutrition, and malaria control, as well as good governance, decentralization, health financing, and community health. Dr. Hoemeke is a regular contributor to a variety of publications and invited speaker on global health and development issues.  As an adjunct professor at the University of North Carolina (UNC) Gillings School of Global Health, she teaches systems and design thinking and communications courses. Her research interests include health policy and advocacy, communications, health care delivery, global health, health systems, maternal and child health, and reproductive health. Dr. Hoemeke has a doctorate in public health in health policy and management from UNC’s Gillings Global School of Public Health and an MPH from the Johns Hopkins Bloomberg School of Public Health. She completed her undergraduate studies at Northwestern University, where she received a BS in journalism from the Medill School of Journalism. She is fluent in English, French, and Sango.

Dr. Tariq Khan Hashim is Consultant Neurosurgeon at Northwest General Hospital and Research Center, Peshawar. His role involves the treatment of disorders of the nervous system, particularly concerning the brain and the spinal cord. Dr. Tariq’s particular area of interest is skull base surgery.

Jimmy Kolker serves part-time as Senior Advisor to the Bureau of Global Health Security and Diplomacy at the U.S. Department of State.

Dr. Chad Perlyn is the Executive Vice President and Chief Medical Officer at Nova Southeastern University (NSU), overseeing the university’s health care network, which includes eight colleges focused on education and research, as well as NSU Health, its patient-centered health care system. He is also a professor at NSU’s Dr. Kiran C. Patel College of Allopathic Medicine. Dr. Perlyn joined NSU in December 2024 after serving as Senior Vice President at Nicklaus Children’s Health System, where he led surgical services, community health, and corporate responsibility.

Dr. John B. Sampson is a critical care anesthesiologist at Johns Hopkins University and Director of the Johns Hopkins Global Alliance of Perioperative Professionals (JHU-GAPP). He is founding president of the Institute of Global Perioperative Care (IGPC). His global heath engagement began as a UCSF visiting medical visiting to Nigeria in 1989. Since that time Dr. Sampson has engaged in work in numerous countries, has founded Doctors for United Medical Missions, (DrUMM), IGPC and established numerous International Society of Critical Care Medicine courses in Africa and Asia. Dr. Sampson has an interest in bridging the medical and cultural divide between America and Africa through education, training, technology, and historical forums. He does this through his global health work, as faculty member of the Johns Hopkins Center of Africana Studies and as a board member of the Diaspora African Forum, (based in Ghana). Dr. Sampson has introduced dozens of physicians, students, and others to Africa in a manner that has altered their perceptions, careers, and interests. Dr. Sampson’s current focus is to improve access to anesthesia and critical care training as well as access to sustainable oxygen and renewable energy in Africa through the Society of Critical Care Medicine, (SCCM) African Infrastructure Relief & Support (AIRS) project.