No. The ACCME Process for Handling Complaints Regarding ACCME Accredited Providers requires that all complaints submitted "confirm the name, US Postal Service address and contact information of the person making the submission."
However, please note that to the extent feasible, the ACCME will not disclose the identity of the complainant without his or her consent. The identity of the complainant may be evident due to the circumstances of the complaint, and the complainant's identity may be revealed in a legal proceeding. If the ACCME is presented with information anonymously to suggest egregious noncompliance with ACCME requirements, the ACCME may decide to initiate a complaint, as allowed by ACCME policy.