Step 1: write to the privacy officer
A written request to the custodian for a formal investigation usually asks for a review of all access to the 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: the complaint route
If the response is inadequate, a complaint can be made to the provincial privacy commissioner (IPC Ontario, OIPC BC, OIPC Alberta, CAI Quebec, etc.).