The effect of heat generation on heat and mass transfer over a radially stretching surface embedded in a porous medium with chemical reaction and activation energy are numerically discussed. The governing boundary layer equations are formulated and transformed into ordinary differential equations using a suitable similarity transformation. The resulting ordinary differential equations are solved numerically by applying the fourth-order Runge-Kutta method with the shooting technique. The influence of the different parameters on the velocity, temperature, and concentration are discussed and analyzed. The skin friction coefficient, the Nusselt number, and Sherwood number are also computed and investigated for different embedded parameters in the problem statements.