||Recently, we have witnessed two hints of physics beyond the standard model: a 3.3 sigma local excess (M-A0 = 52 GeV) in the search for H-0 -> A(0)A(0) -> b (b) over bar mu(+)mu(-) and a 4.2 sigma deviation from the SM prediction in the (g - 2)(mu) , measurement. The first excess was found by the ATLAS collaboration using 139 fb(-1) data at root s = 13 TeV. The second deviation is a combination of the results from the Brookhaven E821 and the recently reported Fermilab E989 experiment. We attempt to explain these deviations in terms of a renormalizable simplified dark matter model. Inspired by the null signal result from dark matter (DM) direct detection, we interpret the possible new particle, A(0); as a pseudoscalar mediator connecting DM and the standard model. On the other hand, a new vector-like muon lepton can explain these two excesses at the same time while contributing to the DM phenomenology.