This article demonstrates common integration patterns for the Bookings Staff Members APIs.
Retrieve staff members' email addresses and phone numbers based on the current privacy settings.
staffMemberSettings.contactInformation.publiclyAccessible is false, the identity you're authenticated as needs the BOOKINGS.STAFF_MEMBER_READ_PI permission to retrieve contact information.email and phone properties in the response to get the contact information.
If publiclyAccessible is false and you don't have the BOOKINGS.STAFF_MEMBER_READ_PI permission, these properties are empty.
The Staff Members API is the only way to retrieve this information. There's no alternative API method.