This is a local Pittsburgh number, but lookups do not find it.  Caller said they are calling about our inquire for health care insurance.  I have had this same type of call before with different local numbers. These spammers are finding ways to insert a local number on the Caller ID and often it is a legitimate number to another business.

Most businesses that have many phone lines do not make public the telephone numbers of those lines.
And some residences also do not want their phone numbers published or listed anywhere.
Cellular phone providers also do not make that information public either.
Burner phones can be activated without providing any personal information.