Step 1: write to the privacy officer
Request a formal investigation. Ask for an audit of all access to your record, with dates, employee names (redacted as required), and reasons for access. The custodian must respond within a reasonable time.
Step 2: ask about notification
Most health privacy statutes require the custodian to notify affected patients of snooping incidents. In Ontario, PHIPA also requires reporting to the IPC.
Step 3: file a complaint
If the response is inadequate, file a complaint with your provincial privacy commissioner (IPC Ontario, OIPC BC, OIPC Alberta, CAI Quebec, etc.).