Hi Sgquality,
First do a correlation matrix or gap analysis with all these GMP or QMS requirements of Health Canada, Japan and EU MDD.
Close the gaps and ensure your QMS is in compliant to these GMPs and update your quality Manual.
For Health Canada (CAN/CSA ISO 13485), you need to get certified by third party certification bodies like BSI, SGS, etc..(as indicated by Somasekhar).
For EU, you need to appoint an EU Authorised representative, if you don't have an office location in EU. Need to have a signed agreement.
For Japan, you need to appoint (agreement is required) a MAH (Market Authorisation Holder) and obtain FMA (Foreign Manufacturer Accreditation).
Update your labeling with ECREP, CE Marking, appropriate safety symbols. To meet HC regulations, safety information must be in French Canadian in your user documentation.
Regards,
Sreenu