MOE - from where did you get the MDA you posted?
I have to admit it - from the Jeppesen chart. But I did also check whether it made sense to me. The giveaway are the horrendous minima for the circle to land. Without a detailed map depicting terrain and other obstructions it is a "best guess" but I assume that the required obstacle clearance in the missed approach area can only be met by adjusting the MDA from a possible 400ft above TDZEL to 645ft above TDZEL and additionally by relocating the starting point of the missed approach (MAPt) to 1.9 NM from the THR.
Another point is whether a height should be added to any given altitudes in an approach procedure apart from the MDA/DA. To me adding a height above TDZEL to an altitude restriction 5 NM from the runway is irrelevant at best and dangerously misleading at worst. Depending on the underlying terrain these heights based on the TDZEL can deviate considerably from actual values. The Smolensk crash showed this clearly.