Abstract A numerical evaluation of the radiative corrections for the energies of the 2 s, 2 p, and 1 s states of the Li isoelectronic sequence has been carried out. The results are based on the ab initio QED calculations made previously by two of the authors. Those for the 2 s-2 p Lamb shift are almost all in agreement with experiment. The main effect of screening involves a renormalization of the valence electron wave function at the origin. As expected, the smaller effects, originating in interactions between two electrons, play a significant role only for the lower range of Z values. Subtler QED effects appear in the p-state (rather than s-state) energies and will become more apparent in other atoms such as B.