If, on the other hand, your clients work with a number of team members, you might consider hiring a voiceover professional to record your greeting. While a recording with a voice actor is an extra expense, the result often outweighs the cost.
Sample Voice Prompts for Health Care INTRODUCTION This document provides representative examples of scripts for professionally-recorded voice prompts that are specific to healthcare organizations – from large, tertiary hospitals to small and medium size medical and dental practices.

Creating a professional-sounding voice recording for your phone system can be a more difficult process than one initially might assume.
To create a greater sense of authority, and that you are somebody important, list the name of a person and company who you've worked with before, especially if that person and company is a direct competitor of the person you are calling. Nothing grabs the interest of the person you are calling faster than hearing the name of their main competitor.