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About OIG

Who We Are

Since its 1976 establishment, the Office of Inspector General (OIG) has been at the forefront of the Nation's efforts to fight waste, fraud and abuse and to improving the efficiency of Medicare, Medicaid and more than 100 other Department of Health & Human Services (HHS) programs. OIG is the largest inspector general's office in the Federal Government with approximately 1,600 personnel. The majority of the agency’s resources go towards the oversight of Medicare and Medicaid — programs that represent a significant part of the Federal budget and that affect this country's most vulnerable citizens.

HHS-OIG Fact Sheet

Frequently Asked Questions

The OIG Hotline accepts tips and complaints from all sources about potential fraud, waste, abuse, and mismanagement in Department of Health and Human Services’ programs. Please submit your complaint via the OIG Hotline online form. If you prefer to contact the Hotline by phone, the telephone number is 1-800-447-8477. For more information about our Hotline, please see our Hotline Webpage.

All final HHS-OIG audit and inspection reports are available on our website.

The OIG updates its List of Excluded Individuals/Entities (LEIE) monthly. Sign up here to receive email notifications when the list is updated.

More information about the Exclusions Program can be found on our website. If you still have any questions about Exclusions, contact the Exclusions Program directly at

HHS, OIG, OI
Exclusions Staff
7175 Security Boulevard, Suite 210
Baltimore, MD 21244

Phone: 410-281-3060

Fax: 410-265-6780

Email: exclusions@oig.hhs.gov

Please contact your regional CMS office. Click here to view the list of CMS Regional Offices.

Sign up here to receive email updates from HHS-OIG.

If you have a question or problem related to a child support enforcement case, please contact your State's child support enforcement office. These offices handle the majority of child support cases and issues, including the day-to-day operations of child support collections.

Please note that even if a case appears to meet the criteria for Federal prosecution, there are many elements that go into the decision to investigate and prosecute such cases at the Federal level. The ultimate decision on whether to prosecute a child support case at the Federal level lies with the Department of Justice. (For more information, please see the U.S. Department of Justice's Citizen's Guide to Federal Law on Child Support Enforcement).