Main Contact Information - Headquarters
U.S. Department of the Interior
Office of Inspector General
1849 C Street NW - Mail Stop 4428
Washington, D.C. 20240
Phone: 202-208-5745
Fax: 202-219-3856
Hotline
- Toll Free: 800-424-5081
- Eastern Regional Office - Herndon, VA: 703-487-8051
- Central Regional Office - Lakewood, CO: 303-236-8296
Sacramento, CA
Audits Phone
916-978-6199
Audits Fax
916-978-5656
Investigations Phone
916-978-5630
Investigations Fax
916-978-5635
Lakewood, CO
Audits Phone
303-236-9243
Audits Fax
303-236-8211
Investigations Phone
303-236-9243
Investigations Fax
303-236-8279
Information Quality
- Review the Information Quality Guidelines, which are meant to ensure and maximize the quality, objectivity, utility, and integrity of Government information disseminated to the public.
- Information Quality Form
Questions, Feedback, or Report Notifications
The Office of Inspector General offers report notification emails and welcomes any inquiries or suggestions by contacting the Webmaster.