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Contact DOI

DOI investigates and refers for prosecution City employees and contractors engaged in corrupt or fraudulent activities or unethical conduct. Investigations may involve any agency, officer, or employee of the City, as well as those who do business with, or receive benefits from, the City. We greatly appreciate your complaints or comments with DOI's mission in mind.

How to Reach DOI:

(212) 825-5900

Electronic complaint
Online Complaint

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Contact Information for DOI's Inspectors General
Get the list of DOI's Inspectors General

DOI's Other Investigative Units
Get the list of Units

E-mail a message to our Commissioner

City of New York
Department of Investigation - Complaint Bureau
180 Maiden Lane
New York, NY 10038

In-Person Visits to DOI
DOI accepts walk-in complaints on Wednesdays, 10 a.m. to 4 p.m.

Visitas en Persona a DOI
El Departamento de Investigación (DOI) aceptara quejas presenciales los miércoles de 10am a 4pm.