Contact the Centers for Medicare and Medicaid Services at 1-800-633-4227, as stated on the website. Those needing information about Medicaid can contact their states' Medicaid offices.Continue Reading
Contact the Centers for Medicare and Medicaid Services using one of the following methods.
Call Medicare for assistance at the number, 1-800-Medicare. If calling to report possible fraud or abuse, call 1-800-447-8477.
Mail a package or letter containing documentation to the CMS. The mailing address is Centers for Medicaid and Medicare Services 7500 Security Boulevard Baltimore, MD 21244, according to usa.gov.
Go to About CMS and CMS Regional Offices. Scroll down the next page to the list of PDF documents. Click on the PDF link for the nearest regional office to open a document with phone and address contact information for that office.