That sounds like a terrible use-case unless there’s already a pre-existing relationship with the provider, and it seems questionable even then.
It’s already often difficult to get a human on the phone.
Go to the insurance company web site.
Several years ago a law was passed requiring insurance companies to keep their provider lists accurate and up-to-date.
There's a regulatory window for freshness, and every insurance company web site is required by law to show you when the data was last updated.