What I Know About This Topic
I'm not certain who Brett Oppenheim is or what specific website you're referring to. I don't have reliable information about this person or why they might be absent from a site's listings. If you can share more context about what organization or platform this involves, I may be able to help you figure out where to look or who to contact. To actually track down why someone isn't listed on a particular website, the most practical approach is usually one of the following paths, depending on what kind of site it is: The real reason someone ends up unlisted varies a lot. It could be a simple data entry error, a name mismatch in the database, a recently added person whose details haven't propagated yet, or intentional omission by the site owner. Without knowing the specific website, it's impossible to say which applies here.
If you tell me the actual website in question, I can look into this more specifically.
