Dr. Troy

Dr. Troy is the primary doctor in Vault City. His office is on the ground floor of Vault 8. He has an assistant named Phyllis.

He will attack you on sight if Marcus and Lenny are in your party unless you are Captain of the Guard.

Interactions with the Player Character
Troy will heal you if you have been made a citizen of Vault city. If you have been made Captain of the Guard, he will heal the entire party.

Quests
Dr. Troy is instrumental in the quests to find a cure for Jet addiction. He will even ask you to find a sample of Jet for him to study.

Blackmail
You can use this knowledge to blackmail him for $500-$1000 each month. However, if you ever go to him for medical treatment again, you will be hit for 6999 damage.

If you are a citizen (otherwise, you will be kicked out), you can also present this information to Lynette, and she will kick Dr. Troy out of Vault City. Phyllis will not speak to you again if you do this.