Consultant Team
Where Diagnostics Meets Strategy and Innovation
About Us
Finding Inspiration and Innovation at Every Turn
At DxNexis Consulting, we are catalysts for innovation in global health and laboratory systems, driven by creativity, grounded in data, and committed to delivering efficient, equitable health solutions.
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We partner with governments, donors, and private sector leaders to strengthen health systems and diagnostics from the ground up. Our approach integrates global best practices with forward-thinking strategies tailored for low- and middle-income countries, ensuring that every intervention—from procurement to last-mile service delivery—is both effective and sustainable, with a core focus on patient and program outcomes.
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We believe that access to diagnostics is access to care, and we act on this belief by designing and implementing cutting-edge solutions that empower local systems, accelerate service delivery, and close critical gaps in health equity.
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At DxNexis, we don’t just consult—we collaborate, co-create, and transform. Together, let’s build smarter, more connected health systems and laboratory networks that meet the challenges of today and anticipate the needs of tomorrow.
Meet the Team
Jason Williams, MPH, MT (ASCP)
Founder & CEO of DxNexis, with over 30 years of global experience at the intersection of public health, laboratory systems, supply chain and international development. I lead high-impact consulting engagements that focus on laboratory policy, diagnostic scale-up, and health systems strengthening across HIV, TB, and other infectious diseases. This work builds on over a decade of executive leadership at USAID and CDC, where I served as Senior Laboratory Advisor, including PEPFAR Laboratory Co-Lead under GHSD, directing complex multi-agency initiatives, shaping global laboratory strategies, and advising governments and donors on the implementation of sustainable, high-performing laboratory and supply chain systems.
I led the design and rollout of Diagnostic Network Optimization (DNO) within PEPFAR and led five national DNO's—transforming Nigeria’s molecular diagnostic network as the first of its kind—and pioneered PEPFAR’s all-inclusive procurement model, which has saved the U.S. government more than $150 million since 2019. As a former CDC Senior Laboratory Advisor in South Africa, and Clinical Research Associate, I have provided oversight of laboratory-based disease surveillance, clinical trials oversight, and establishing new and exciting public-private partnerships, contributing to expanded rural diagnostic access, national training infrastructure, and large-scale TB and HIV programs.
My core expertise includes:
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Global laboratory policy, molecular diagnostics, and diagnostic network design
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Strategic management of multimillion-dollar health programs and laboratory scale-up
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Surveillance system development and oversight of clinical trials and research networks
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Regulatory compliance and quality assurance (GCLP, GMP, WHO PQ, CE-IVDR, ISO 9001/15189/17025)
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Crisis and emergency response, including supply disruptions, recalls, and pandemic response
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Cross-sectoral collaboration with governments, donors, international NGOs, and the private sector
I have a proven track record of building resilient, country-led diagnostic networks, forming effective public-private partnerships, and delivering scalable, innovative solutions in some of the most challenging global health environments. Recognized internationally as a thought leader in laboratory systems strengthening and diagnostic access.
Farouk Adams Umaru, Ph.D., MBA, PMP
Consultant with over 25 years of experience in global health and international development. I’ve led initiatives to improve access to quality-assured medicines, diagnostics, and health technologies across 50+ developing countries. My career has spanned technical and leadership roles with organizations such as the Ghana Food and Drugs Authority, USAID, United States Pharmacopeia (USP), John Snow Inc., Amentum, and others.
My expertise spans three core areas:
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Quality Assurance & Regulatory Compliance – I’ve implemented international standards (ISO 9001, 17025, 15189) in 20+ labs across 34 countries, achieving zero non-compliance and 15% year-on-year process improvements.
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Healthcare Supply Chain Management – I’ve led procurement, logistics, and last-mile delivery of over $10B in HIV, TB, malaria, and maternal/child health commodities in Africa, the Middle East, and Southeast Asia.
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Large-Scale Program Management – As a PMP-certified project manager, I’ve directed multi-million-dollar programs including SCMS ($10B), PQM ($110M), and PSM ($50B), managing cross-functional teams of up to 50 experts.
My core competencies include supply chain optimization, regulatory compliance (GMP, GDP, ICH, FDA, WHO PQ), health systems strengthening, strategic planning, financial management, and cross-sectoral stakeholder engagement.
I hold a PhD in Public Health, an MBA in Organizational Leadership, and a Master’s in Pharmaceutical Analysis & Quality Assurance. Passionate about advancing health equity and innovation, I bring a blend of strategic vision and operational excellence to every initiative I lead.
Ashini Fernando, PhD, MPH
Scientist and global health practitioner with over 30 years of cross-sector experience across academia, industry, and the nonprofit sector. I hold a PhD in Pharmacology and completed postdoctoral training in biotechnology development, both at Duke University.
I began my industry career at Becton Dickinson & Company, where I led the design and development of infectious disease diagnostics for low-resource settings—work that sparked my commitment to health equity and led me to earn an MPH from the UNC Gillings School of Global Public Health.
I later joined FHI 360, contributing to both contraceptive innovation and infectious disease initiatives. Most recently, I served as the Quality Assurance Technical Lead for the USAID-funded PEPFAR program, managing quality oversight, risk mitigation, and incident response for a global portfolio of over 600 diagnostic products deployed in more than 50 countries.
I bring deep expertise in diagnostic dossier evaluation, regulatory and quality systems, risk assessment, and the management of donor-funded health programs. I am deeply committed to advancing equitable access to diagnostics and strengthening health systems through evidence-driven, scalable solutions.
David Jenkins, PhD
Expert in analytical sciences with over two decades of experience supporting the quality and performance of health products across global settings. I earned my PhD in Fiber and Polymer Science from North Carolina State University in 2001, followed by postdoctoral research at both Georgia Tech and NC State.
From 2004 to 2025, I served in the Product Quality and Compliance Department at FHI 360, where I provided analytical leadership across a diverse portfolio of pharmaceuticals, medical devices, diagnostics, and insecticide-treated nets. Now working as an independent consultant, I continue to support global health initiatives with a strong focus on analytical rigor and system efficiency.
I have extensive experience working within ISO 17025, ISO 9001, and GLP quality management systems. My work includes product stability assessments, technical assistance to laboratories, and the development of innovative analytical methods—particularly those designed to offer alternative characterizations or enhance efficiency in low- and middle-income country settings.
With a commitment to improving quality systems and expanding access to reliable diagnostics and therapeutics, I bring a critical blend of technical depth and practical problem-solving to every engagement.
Josh Davis, MSPH
Strategic data and analytics leader with over 15 years of experience in global public health and supply chain management, specializing in transforming complex data ecosystems into actionable insights and scalable solutions. At USAID, led the design and execution of division-wide data strategies supporting $800M+ in global health procurements across 52 countries, improving data integration, visibility, and governance. Expert in forecasting and analytics for HIV and laboratory commodities, regulatory compliance, and enterprise system implementation. Adept at bridging technical and policy priorities, leading cross-functional teams, and advancing analytics maturity through governance, training, and innovation. Holds an MSPH in Health Policy and Management from UNC-Chapel Hill and a strong record of leveraging data innovation to strengthen health systems and improve patient outcomes globally.
Konrad Bradley, PhD
Seasoned global health and diagnostics leader with a Ph.D. in Virology and over 13 years of postdoctoral experience spanning scientific research, policy analysis, and international health systems strengthening. Brings a unique blend of technical expertise and strategic leadership from roles at USAID, TEAMFund, and leading academic institutions. At USAID, led diagnostic and laboratory policy during the COVID-19 pandemic, advised senior U.S. government and partner-country officials, and oversaw multimillion-dollar programs across more than 30 countries—enhancing diagnostic networks, laboratory quality, supply chains, and pandemic preparedness. Recognized authority on integrated diagnostics, including rapid tests, molecular platforms, and genomic sequencing for HIV, COVID-19, and emerging infectious diseases. Experienced in designing sustainable strategies for technology adoption, system integration, and private-sector engagement in low- and middle-income countries. At TEAMFund, led research and reporting on private-sector health investments, authored impact publications, and shaped strategic direction for future global health financing. Earlier academic work includes 19 peer-reviewed publications in leading journals such as Cell Reports and PNAS. A proven communicator and mentor, regularly lectures on disruptive diagnostic technologies and has served on WHO and USAID technical on outbreak response teams and working groups shaping global diagnostic policy.
