Electromagnetic modeling results are validated for the HBT-EP runaway electron mitigation coil (REMC) – the first coil of its kind. ThinCurr, a thin-wall, 3D electromagnetic modeling code, predicts currents and fields in the coupled REMC, plasma, vacuum vessel, and operational coil system [Hansen *CPC* 2025]. These predictions are then compared to experimental data to validate numerical models, starting with initial tests performed under vacuum conditions. The REMC is driven by the vertical field and ohmic heating coils separately. Experimental and modeled results are in general agreement with errors primarily attributed to the challenge of predicting coil self-inductances. The REMC is then driven by a high-power amplifier and magnetic fields are measured by Mirnov coil arrays. The perturbed field is in good agreement suggesting the expected poloidally broadband n=1 field is applied. Following these vacuum tests, plasmas are allowed to disrupt and inductively drive the REMC. About 15% of the plasma current is converted and the experimental results are well reproduced by modeling. An analogous workflow has been used for the upcoming SPARC [Tinguely *NF* 2021] REMC with similar mid-disruption normalized field perturbations. The HBT-EP REMC research program validates the workflow predicting these fields and currents.