No. If you want to file a formal complaint with the College and be informed about the outcome of the investigation, you must provide your name. Your name and concerns will be shared with the chiropractor.
During the investigation, CCO may need to share your concerns with witnesses to get additional information. However, when/if the College publishes information about complaints on the Public Register, the names of the person who made the complaint and any witnesses are not included and are never published.
If you want to provide a tip to the College, you can do so anonymously. The College may or may not be able to investigate depending on how much information you are able to share.