Hi T,
We arrived from the UK in early January-- we didnt need anything at all from our doctor for the purposes of the Work Permit application.
On arrival here, we had to complete a questionnaire from the medical insurance company but they didn't ask for any supporting documentation.
i don't know where you are coming from, but if UK , you can ask for a printout of your medical records-- they will only charge you for a comprehensive one--a ltd one is FOC.
hope that is of some help and good luck ,,
Kind regards,
J