Search Competitors of Client by Zip Code - Interventional Radiologists in {{Zipcode}}

I'm trying to do a google search for competitors of the client that we're working with by zip code in google search. So, the search I'm using is interventional radiologists {{Zipcode}} NOT {{ProspectDomain}}. What do we think is the easiest (and cheapest way) to extract the name of the competitor in a way that we can use it in an email that sounds like it was written by a person?