BOAC has it right in post #7, the links are all good information and 'dive and drive' (as it's commonly known) will be a thing of the past in a few years (or maybe decade where 411A works) except for circling approaches.
FAA currently requires 50' to be added to any CANPA MDA
UNLESS the OPERATOR has been granted permission to use the published MDA without adding 50'.
For
dive and drive everyone uses the published MDA - no 50' additive.
For
CANPA everyone adds 50' to the published MDA unless special permission has been received from FAA to delete the 50'. (It's said FAA was initially concerned that the newfangled CANPA would be so unfamiliar to crew they might become confused and not respect the "absolute floor" of the MDA as they were long accustomed to doing for dive and drive approaches
)
BUT, if an individual operator has trained it's pilots to FAA satisfaction, then that carrier MAY receive permission from the FAA to delete the 50' additive. Then you get to use the published MDA the same as someone who does the now frowned upon (except for circle approaches) dive and drive. Only your flight department will know if your
operation has been granted permission by the FAA to delete the 50'.
For pilots flying under FAA rules the answer is in the column you select on the Jepp approach chart . Some airports have both a LNAV column with MDA and a LNAV/VNAV column with a DA. If you are using the column with MDA minimums AND you are using CANPA, and you don't have permission from the FAA to delete the 50'; - you WILL add 50' to the published MDA.
If you're using the column with DA minimums you fly to the DA.
That's for FAA. The links in post #7 explain what the rest of the world does.