Unlike most ghouls, he has an odd job - being a bartender. However, like most bartenders, he has some gossip that he can tell... for a price. For some odd reason, Phil sells Nuka-Cola and beer for $1 less than the usual barter price.
He is also one of the most informed characters in Broken Hills (being a bartender and all), and after buying a drink players can ask "What's new?" to learn about anything and everything Broken Hills.
The player can tip Phil 1$ or 2$ every time they buy something from him, and if you tip him for a total of 20$ he will tell you about a secret weapons cache - and you can recover it by some dialog - in Broken Hills.