Contact CMS

Contact CMS

This page provides a list of contact phone numbers and web links to help you find answers to your Medicare questions or program issues. Information in this page cannot respond to individual Medicare concerns.

Questions related to specific services (e.g. casework, program issues, etc.) should be communicated through the existing Centers for Medicare & Medicaid Services' resources, identified below.  Additional information and assistance can be found at the website or under the “Related Links” section found below.

Contact Information for People with Medicare

Telephone numbers and web link information related to specific Medicare questions.

Contact Information for People with Medicaid

Medicaid is a state administered program and each state sets its own guidelines regarding eligibility and services. Please refer to the "Related Links" for a list of State Health Departments.

Contact Information for National Provider Identifier Standard (NPI)

Contact Information for Unique Physician Identification (UPIN)

Contact Information for Social Security, Disability Issues, or Supplemental Security Income

Contact information for CMS Regional Office

Provides contact information for your CMS Regional Office, and specific program issue contacts are also available as PDF download.

CMS Baltimore Headquarters Telephone Numbers

  • Toll-Free: 877-267-2323 (Employee directory available) 
  • Local: 410-786-3000
  • TTY Toll-Free: 866-226-1819
  • TTY Local: 410-786-0727 


Page Last Modified:
09/06/2023 04:51 PM