Medicare Appeals/Complaints | Medicare Service Center
7500 Security Boulevard, Windsor Mill, MD 21244
Eligibility
No Restricitons
Required documents
None
Hours
24/7
800-633-4227
Voice·
Main Phone
877-486-2048
Voice·
TTY
Website
https://medicare.govLanguages
Spanish, interpreters available for other languages
Application process
Call for information
Fees
None
Service area
United States
The Medicare Service Center is the national 1-800 number to contact Medicare and Medicaid sevices. They provide help with Medicare questions, allows you to request information on Medicare health plans and publications and offers a recording of common questions and answers.
Last Assured
01/30/2026
What's Here
Providing organization
CENTERS FOR MEDICARE AND MEDICAID SERVICES
CMS provides health care coverage through Medicare, Medicaid and the Children's Health Insurance Programs.