Dr. Preston is a resident of Rivet City. You can find him in the Clinic located on the Upper Deck. You can acquire medical supplies from him. If asked if he sells any Chems/Drugs, he will respond by saying, "I'm a doctor, not a dealer".
The player can hack the terminal in his Clinic to find a report on Health Hazards. The report states:
|Apart from the standard dangers, Rivet City provides a few uncommon problems for long-time residents:
 The Replicated Man
- Main Article: The Replicated Man
Zimmer recommends speaking to Preston who can be found in the clinic just above the Science Lab, discuss the android with him and he'll give you a holotape.
 Take it Back!
- Main Article: Take it Back!