Umoh hails from Ikot Ekpene Local Government Area of Akwa Ibom State.
Umoh worked in Sokoto Veterinary Centre under the National Youth Service Corps (NYSC) scheme after graduation with DVM in 1974.
He later joined the services of Ahmadu Bello University in August 1975 as an assistant lecturer in the Department of Veterinary Public Health and Preventive Medicine and rose through the ranks to become a professor in 1989.
He spent one of his sabbatical leaves teaching in the College of Veterinary Medicine, University of Agriculture, Makurdi from April 2010 to March 2011.
He was the Principal Investigator in the MacArthur Foundation funded project for the creation of Centre of Excellence in Veterinary Epidemiology in Ahmadu Bello University.
He was the Head of the Public Health and Preventive Medicine Speciality Group of the College of Veterinary Surgeons, Nigeria (2007 – 2012).