Gradian Health Systems is a nonprofit medical technology company that develops, distributes,
and sustains world-class medical equipment in low-resource hospitals around the world. With service and training operations across the African continent and other regions, we have built the distribution network, business model, and clinical partnerships to revolutionize how life-saving innovations are introduced and supported and empower health providers to better serve their patients.

Gradian has established distribution and service hubs in 10+ countries in sub-Saharan Africa. Working hand-in-hand with national governments, professional societies, international donors, NGOs, and local companies, we serve a total of 700+ health facilities in 30+ countries of operation.

About Us

Our Team

Gradian has teams and offices in New York, USA; Nairobi, Kenya; and Dar es Salaam, Tanzania.

Ibrahim Bakari

Operations Manager

Ibrahim manages Gradian’s broad portfolio of activities in Tanzania, including customer service, training, and monitoring and evaluation. As Gradian’s lead in-country staff member, he works closely to cultivate relationships with Gradian’s key stakeholders.

Ibrahim brings nearly a decade of experience working in multi-stakeholder engagement and operations. Before joining Gradian he worked on project development with the UN Global Program office in Tanzania and Geneva, Switzerland. Through his earlier work with the International Development Consultancy, Ibrahim worked with policymakers, community leaders and federal ministries to implement various development programs in Tanzania.

In 2016 Ibrahim was selected to be a member of the “Next Generation of Global Leaders” by Japan’s Cabinet Office (Ministry of Foreign Affairs).

Ibrahim holds a bachelor’s degree in Sociology from the University of Dodoma and a Postgraduate diploma in Management of Foreign Relations and Diplomacy from the Centre for Foreign Relations in Dar es Salaam.

Rati Godara Bishnoi

Director of Communications

Rati Godara Bishnoi leads Gradian’s communications and helps share the organization’s story of growth. In the role, Rati manages a wide portfolio of communications activities ranging from engaging key audiences to developing content and advocacy efforts.

Rati has more than 10 years of communications, editorial, and product and project management experience creating value at the intersection of innovation, technology, and social impact. Rati has specialized in advancing the understanding of global and US health issues, first as an editor with the healthcare consulting firm the Advisory Board Company and then focusing on reproductive health and rights and gender equality issues with organizations such as Women Deliver and the UN Foundation. At Women Deliver, Rati helped launch, a crowdfunding platform dedicated to raising funds for programs supporting girls and women, and, at the UN Foundation's Family Planning 2020 initiative, she product managed the global partnership’s websites and developed online learning opportunities to deepen understanding on contraceptive issues.

Most recently, Rati managed the development and production of all research products at social science research institute Data & Society and conducted media workshops for reporters covering how data-centric technologies such as automation and AI are changing our world. Rati has a Masters of Public Administration in International Policy and Management from New York University's Wagner School of Public Service and a Bachelors of Arts in English Literature from George Washington University.

Hongmei Cao


As controller, Hongmei oversees all aspects of accounting functions at Gradian Health Systems across our global operations. Recently, she helped establish Gradian’s finance team in Kenya and implemented local financial reporting systems. Hongmei is leading the finance teams in streamlining accounting policies and procedures to support Gradian’s rapidly growing global business.

Hongmei brings more than 20 years of accounting experience to Gradian from a variety of industry sectors and companies, including the private, nonprofit, and healthcare sectors and companies such as AIG Life Insurance Company of Canada.

Hongmei is a CPA and has a bachelor’s degree in business accounting and information technology from the Southern Alberta Institute of Technology in Canada.

David Ettl

Chief Operating Officer

As Chief Operating Officer, David oversees Gradian Health Systems’ day-to-day fulfillment of customer commitments across our more than 30 markets. With a focus on logistics, technical support services, and clinical training efforts, he works with staff across Gradian’s three offices in New York, Nairobi, and Dar es Salaam. He began his tenure in 2016 by helping design Gradian’s research philosophy, and continues to guide the company’s information management strategy.

Prior to Gradian, David spent 10 years working in global health, with a focus on research design, program management, and monitoring and evaluation. Most recently, he consulted for multinational pharmaceutical companies to support maternal health and non-communicable disease initiatives in Asia, Latin America, sub-Saharan Africa, and the Middle East.

David has lived and worked in both India and Tanzania. He holds an MPH from Columbia University’s Mailman School of Public Health and a BA in Global Studies from the University of California, Los Angeles (UCLA).

Beatrice Eunyusat

Logistics & Administration Associate

Beatrice helps oversee the movement of Gradian Health Systems’ devices from manufacturing warehouses to our regional hubs and finally to our client hospitals and health centers. Prior to joining Gradian’s team in Nairobi, Beatrice worked as an operations coordinators for five years with GrowthAfrica, which focuses on growing successful enterprises in Africa through business acceleration, strategic advice, and access to investments. In the role, Beatrice lead day-to-day operations of the office and accelerator workshops.

Anthony Githinji

After-Sales Operations Manager

As Gradian Health Systems’ After-Sales Operations Manager, Anthony manages customer service implementation and support for our global clients. Based in Nairobi, Kenya, Anthony also manages spare parts inventory and works with the rest of the Gradian teams to provide technical support and coordination of product installations, technical and clinical trainings, and sales and marketing in our East Africa operations.

Anthony has more than 20 years of experience and has worked as a biomedical engineer in various capacities in public health facilities, the private healthcare sector, and social enterprises and NGOs, including the Kenyatta National Hospital, Phillips Healthcare Technologies, GE Healthcare, MediQuip Global, Hewatele, and the Center for Public Health and Development.

Anthony has experience in establishing various types of health care units, such as operating rooms, critical care units, neonatal care units, mother and child units, as well as experience developing medical oxygen plants in collaboration with organizations, such as Assist International, GE Healthcare, Hewatele, the Rotary Club, and several others.

Anthony holds a diploma in electrical engineering, is certified in service support on several medical equipment delivery systems, and is currently pursuing a Bachelor of Science in Project Planning and Management.

Ngajimah Hashim

Operations Coordinator

Ngajimah Hashim is the Operations Coordinator in Gradian Health Systems Tanzania office. In the role, Ngajimah plays an important role in supporting the overall operations of training, customer care, and the monitoring and evaluation of Gradian programs.

Ngajimah holds a bachelor’s degree in Sociology from the University of Dar-es-Salaam. Prior to joining Gradian, he served in various roles in the health and education sector, including as a public health officer.

Derick Kamina

Senior Biomedical Engineer

Derick is Gradian's Senior Biomedical Engineer based in Nairobi. He works closely with Gradian-certified field technicians from across the globe to train, guide, and offer event-specific support on the installation, repair, and preventive maintenance of Gradian equipment.

Derick has worked with Gradian since 2013, initially as an independent biomedical engineer consultant. Prior to joining Gradian, he spent time in Uganda as a hospital technician with International Hospital Kampala, a field service engineer with Faram EA Africa-Uganda, and a biomedical engineering consultant with Critical Care Solutions Uganda.

Derick hold a diploma in Biomedical Engineering from Technical University of Mombasa and is currently undertaking a bachelor’s degree in biomedical engineering.

Nishitha Kulshreshtha

Director of Sales

Passionate for driving social impact through sales, Nishitha leads Gradian’s sales across existing and new markets. Based in Tanzania, he is responsible for building key markets for Gradian’s products by managing activities such as sales, marketing, distribution and technical services.

Nishitha joined Gradian after 7 years leading Artemis Life Sciences’ medical device business across Africa, most recently as the principal of Kas Medics, Ltd. Prior to this, he served various sales and management roles in the pharmaceutical industry in India, with companies such as Biocon, Ranbaxy and Sun Pharma.

Nishitha received a BSc degree from Agra University and a master’s in business management from Sikkim Manipal University.

Nicole Lund

Logistics Manager

As Logistics Manager, Nicole oversees equipment, supplier, and travel logistics at Gradian Health Systems, and previously worked with Gradian as a consultant for two years. Nicole has worked in the music, travel, and corporate meeting planning industries and holds a B.S. in Music Industry Studies with a concentration in voice and communications. She continues to perform with her band in Asheville, North Carolina, USA.

Robin Miller

Accounts Payable Associate

As the Accounts Payable Associate, Robin is responsible for overseeing the monitoring, processing, and recording of payments to global trainers, consultants, vendors, and suppliers. Robin collaborates with employees throughout the organization to enhance Gradian’s internal processes and brings over 10 years of experience into her role.

Prior to joining Gradian, Robin worked at NYU-Langone as an accounts payable-supplier data analyst in the finance risk management department where she managed inventory related inquiries. She was responsible for creating data definitions, validating data, retrieving data from systems, merging data from multiple sources, participating or reviewing documentation, report configuration, and coordinating projects.

Robin attended New York University’s School of Professional Studies for Leadership and Management, under the Paul McGhee program. She holds an A.S. in Business and Finance and was nominated to attend the Student Life Conference on Capitol Hill to discuss pressing issues in finance & business in 2007.

Magdalena Mwalimo

Finance & Service Associate

As Finance and Service Associate based in Nairobi, Magdalena is part of Gradian's operations team. She both manages the office's finances and communicates with customers, distributors, and service technicians in supplying spare parts and maintenance support for Gradian’s products.

Prior to joining Gradian, Magdalena spent several years in project administration and monitoring and evaluation. She worked for multiple NGOs and a development consulting firm in Kenya, with a particular focus on projects in the finance sector.

Magdalena has a Bachelor of Arts degree with a Major in Economics from the University of Nairobi, and is currently pursuing her Masters in International Relations (Development Studies).

Hannah Nelson

Training & Evaluation Manager

As Gradian’s Training and Evaluation Manager, Hannah ensures that Gradian’s work is responsive to feedback from the field—and that both our operations and impact are measured effectively. By figuring out the most appropriate questions to ask our trainers, technicians, and users, and then what’s needed to get the answers, Hannah helps Gradian continually learn from what we’ve done in the past and adapt to the needs of the populations we serve.

Hannah has been working in global health for nearly a decade, pursuing a lifelong desire to close the gap in access to healthcare. Before coming to Gradian, she spent eight years living in Tanzania implementing data-driven programs related to sustainable development and displacement. She helped run several community health awareness projects, and led a team at Civicus to develop on online capacity building program for data collection.

Hannah received a B.A. in Public Health and African Studies from NYU. She graduated with her Master’s in Public Health from Tulane, where she studied program design and implementation specializing in HIV/AIDS.

Haleigh Newman

Operations Coordinator

As operations coordinator, Haleigh supports all day-to-day operations in Gradian’s New York office and provides administrative support across a set of teams. Haleigh has a background in elementary education and events coordination, having been a first grade teacher and directed a children's cooking camp. Haleigh holds a B.A. in English from the University of Mississippi.

Kenneth Otieno

Technical Services Manager

As Technical Services Manager based in Nairobi, Kenya, Kenneth manages Gradian’s field service needs across the African continent. In this role, he works closely with Gradian’s network of biomedical technicians and engineers to support them with product training, service responses, and the technical understanding of Gradian’s products.

Prior to joining Gradian, Kenneth spent 11 years at Joint Medical Stores (JMS), a medical device distribution company in Kampala, Uganda, as their senior biomedical service engineer. Through JMS’s work distributing Gradian’s UAM, Kenneth became one of the world’s experts on the installation, maintenance, and servicing of the UAM and now brings that expertise to all of Gradian’s customers.

Kenneth holds a higher diploma in biomedical engineering and a certificate in anesthesia and x-ray equipment from the Mombasa Polytechnic University College in Kenya.

Cullen Ross

Product Manager

Cullen serves as Gradian’s in-house technical lead, overseeing our products' development, marketing, and technical support from factory to facility.

Before joining the Gradian team, Cullen worked to develop a number of novel medical devices and procedures, both in academia and in industry. He also has experience in international development, having helped start a hardware company in Ghana that creates food-processing tools for female entrepreneurs.

Cullen holds a BS in Mechanical Engineering from Olin College of Engineering.

Lina Sayed

Chief Executive Officer

As Chief Executive Officer, Lina directs Gradian Health Systems’ business and strategic development, applying experience from more than 7 years in various leadership positions at Gradian and before then in the financial industry. Most recently, Lina served as Gradian’s Chief Operating Officer and focused on developing existing and new country markets, building local distribution networks, managing product sales, and overseeing training activities.

Lina’s career spans the global health and financial sectors. She spent several years working in JP Morgan Chase’s nonprofit/healthcare group and, more recently, consulted for several companies in the fields of diagnostics and maternal health, specifically focused on products designed for low-resource settings.

Lina has an MBA from the MIT Sloan School of Management and a BA in Journalism and Mass Communications from New York University.

Sofia Stafford

Market Strategy Manager

As Market Strategy Manager, Sofia focuses on Gradian’s growth in existing markets and expansion into new markets; building and managing relationships with distributors, customers, and governments; and working across the Gradian team to drive the development and implementation of its programs.

Prior to Gradian, Sofia worked at USAID’s Center for Innovation and Impact, where she managed the Saving Lives at Birth Grand Challenge and supported the development, introduction, and scale up of a portfolio of more than 100 tools and approaches to address maternal and newborn health challenges. She has previously worked on youth programs and communications at Rise Up at the Public Health Institute and Girl Up at the UN Foundation.

Sofia holds a BA in Cultural Anthropology and Global Health, with a concentration in adolescent health from Duke University.

Ron Wilson

Vice President of Finance and Administration

As the vice president of finance and administration, Ron is responsible for providing strategic financial input to senior management and overseeing the overall accounting process at Gradian. Ron is vital in developing and implementing financial procedures to improve and maintain the fiscal health of the organization.

Before joining Gradian, Ron served as a financial executive for several non-profit organizations. He most recently worked at an organization that focuses on strengthening and expanding the pool of high school graduates preparing for college and their future careers. Ron also previously owned an accounting practice where he provided essential financial management services to growing non-profit organizations and small businesses.

Ron is a Certified Public Accountant and holds a Bachelor of Business Administration in Accounting from Adelphi University and a Masters of Business Administration from St. John’s University, and has been an adjunct professor at Seton Hall University and a lecturer at their Business Leadership Institute.

Our Board

James H. Simons, Ph.D.

James H. Simons, Ph.D., is chairman of the board of the Simons Foundation. Dr. Simons is also board chair and founder of Renaissance Technologies. Prior to his financial career, Dr. Simons served as chairman of the mathematics department at the State University of New York at Stony Brook, taught mathematics at the Massachusetts Institute of Technology and Harvard University, and was a cryptanalyst at the Institute for Defense Analyses in Princeton, New Jersey. Dr. Simons’ scientific work was in geometry and topology; his most influential work involved the discovery and application of certain measurements, now called Chern-Simons invariants, which have had wide use, particularly in theoretical physics. Dr. Simons holds a B.S. from the Massachusetts Institute of Technology and a Ph.D. from the University of California, Berkeley and won the American Mathematical Society’s Veblen Prize for his work in geometry in 1975. He is a trustee of the Stony Brook Foundation, Rockefeller University, Massachusetts Institute of Technology, Brookhaven National Laboratory, the Mathematical Sciences Research Institute and the Institute for Advanced Study, and a member of the American Academy of Arts and Sciences and the American Philosophical Society.

Marilyn H. Simons, Ph.D.

Marilyn Hawrys Simons is the President of the Simons Foundation, an organization whose primary mission is to support advanced research in mathematics and science. In addition to her work at the Foundation, Ms. Simons actively supports numerous not-for-profit organizations.  She is currently President of the Board of the LearningSpring School, a New York City based school for children diagnosed on the autism spectrum. Ms. Simons also leads the Committee on Trustees at the East Harlem Tutorial Program, an after school program in East Harlem and is serving as the Vice President of the Board of the Cold Spring Harbor Laboratory, an outstanding research facility specializing in molecular biology and genetics. She received a B.A. and Ph.D. in Economics from S.U.N.Y. at Stony Brook.

David Ellis Acker

David founded several medical device companies including Biosense, which was acquired by Johnson & Johnson in 1997. He was also the inventor of the core miniature location sensing technology around which the company’s three cardiology and image-guided surgery product lines were based. David is the recipient of 32 US Patents for medical devices in the fields of Cardiac and Neurosurgical minimally invasive surgery. He Vice Chairs the Stony Brook Foundation, serves on the Stony Brook University Medical Center Quality Assessment Review Board, serves on the board of the Long Island High Technology Incubator and is the owner of Harmony Vineyards. David holds a B.S. from Stony Brook University and an honorary doctorate from the same institution.

Dr. Nils Daulaire

Dr. Daulaire has an accomplished career as a global health practitioner and policy maker with over three decades of primary health and health policy experience in Africa, Nepal, Asia and Latin America where he directed multiple pioneering maternal and child heath research projects.  He was Deputy Assistant Administrator for Policy and Senior International Health Advisor for USAID, President and CEO of the Global Health Council, and served in the Obama administration as Assistant Secretary of Health for Global Affairs and as the US representative to the Executive Board of the World Health Organization.  Dr. Daulaire has been elected as a member of the U.S. National Academy of Medicine and the Council on Foreign Relations.  He has been Professor of Global Health at the University of Washington and Professor of Community and Family Medicine at Dartmouth.  Nils earned his BA and MD degrees from Harvard University and an MPH from the Johns Hopkins School of Public Health and is Board certified in Preventive Medicine and Public Health.


We’re always interested in hearing from talented applicants passionate about global health and medical technology. Let us know if you’re one of them.

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Over the years, Gradian has been highlighted in a range of news stories and journal articles. We’ve also amassed a library of video footage and photography showcasing our work in action.

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