No. All the data is shared anonymously - when you share your salary info, we recommend a higher level of geography aggregation depending on the specialty. And you can also choose what level of geography you want it to represent, e.g., metro, state, region, etc.
The data can only be submitted and accessed by logged in users who verify their NPI, so employers do not have access to the data. It is also not visible without logging in, so search engines cannot see it as well.
Obviously, please share what you are comfortable with. We want to make sure that the data is high quality, representative, and useful for the community, and by aggregating across employer type and geography at the right level - hopefully we can keep the data accurate and specific, without tying it back to individuals. Hope that helps!