Dr Makumbi is a Co-opted members of UWOCASO Board, Senior lecturer, Specialist Breast & Endocrine Surgeon, MNSH, Dept. Surgery, School of Medicine, Makerere University.
He studied Medicine at Mbarara University of Science and Technology, Uganda and graduated as MB ChB in 1998. He practiced Medicine up to 2002 then joined the Makerere University for residence in surgery for which is a Master’s degree of Medicine in Surgery in 2005.

He has been involved in a number of research activities at the Makerere University College of Health Sciences, (MakCHS). He has attained an MBA from Sikkim Manipal University of India in 2014, together with a Diploma in Emergency Medicine from the University of Rome, Sapienza in 2009. He is currently a PhD fellow at the same institution.

He has published more than 20 research articles in SCI (E) journals; he is also a practicing breast and endocrine specialist surgeon at the Makerere Teaching and National referral hospital, Mulago.