In this Study, the theoretical calculation of excited-state ionization potentials for 2s22p3 2D°5/2, 2s22p2(3P)3s 2P3/2, 2s22p2(3P)4s 4P3/2, 2s22p2(3P)3d 2D3/2 and 2s22p2(3P)4d 2D3/2 iso-spectrum series of Nitrogen-like elements have been carried out using weakest bound electron potential model theory (WBEPMT) for nuclear charges from Z=7 to Z=14. The Breit-Pauli approximation has been used for relativistic contributions. The obtained values are compared with the experimental results from literature. The overall agreement between data obtained in this work and experimental data from literature can be concluded to be quite good being generally within 0.1 % of experimental values.