Dr Njenga is a well-respected and a world-renowned Endocrinologist with a vast experience and knowledge in Tropical medicine, Social Medicine and Medical Anthropology. She has been in practice for over 30 years and holds a MMed from the University of Nairobi. She has certificates in Advanced Course for Post Graduate Doctors in Endocrinology from the University of New Castle Upon Tyne-UK and Social Medicine and Medical Anthropology from Harvard University.

Dr Eva Njenga, has been the transformational and kinetic force in shaping the way Kenya manages NCDs. Being a strong advocate for a people-centered approach; keep people at the heart, through believing each person as an expert on his or her own experiences and needs. Her Call to Action emphasizes on the importance of involving patient experiences, and their voices, in the effort to find effective and sustainable solutions to the prevention and control of NCDs in Kenya.

Dr Njenga is the Chair of the Kenya Medical Practioners' and Dentists' Council (KMPDC), and NonCommunicable Diseases Alliance of Kenya (NCDAK) and Founder Director of Diabetes Management & Information Centre. A member of several medical associations both locally and internationally and currently sits on the Diabetes Africa Advisory Board. Her over 30 years of practice in medicine have seen her work in several hospitals in the country offering specialized care in diabetes and endocrine conditions management.

She has also been a lecturer at the University of Nairobi's Medical School for more than 10 years, and continues to share her expertise with post-graduate students in various private university hospitals in the country.