Prof Kaimenyi was born in 1952 and is married with five children.
He holds a PhD in Dentistry from the University of Nairobi and is the first inaugurated full professor of Periodontology at the institution.
He is currently the deputy Vice-Chancellor in charge of Academic Affairs at the University of Nairobi.
Prof Kaimeny also serves as a member of the Medical Practitioners and Dentists Board and a trustee of Regina Pacis University College, a constituent college of the Catholic Univeristy of Eastern Africa.
As an Honorary Fellow of the International College of Dentists, Prof Kaimeny has held several key positions such as President of the Commonwealth Dental Association and head of the National Dental Unit at the Kenyatta National Hospital.
He is the nominee for Cabinet Secretary Education.