Why do some publications mention the phone of the corresponding author? Some publications mention the phone of the corresponding author, e.g. https://doi.org/10.1093/jamia/ocw168

Why do some publications mention the phone of the corresponding author? Do readers sometimes directly call the author?
So you can call them?

I've been reached out to by readers before via telephone, particularly reporters trying to get a story together, on one of my more media-friendly papers.

It's rare, and phone numbers are hardly stable things (though neither are email addresses), but it's also a pretty close to no-cost addition.