You cannot email Medicare about your coverage, claims, or account. Medicare does not publish a general email address for beneficiary questions, and the one address it does publish, altformatrequest@cms.hhs.gov, exists only for requesting materials in accessible formats like Braille, large print, or audio.1Medicare. Accessibility and Nondiscrimination Notice For everything else, Medicare directs you to your Medicare.gov account, its 24/7 live chat, the 1-800-MEDICARE phone line, or postal mail.
Why There’s No Email Option
Medicare handles sensitive information: your Medicare Beneficiary Identifier, Social Security number, and medical claims. Standard email lacks the security controls needed to protect that data, and federal privacy rules governing health information make unencrypted email a poor channel for it.2Medicare.gov. Privacy Policy Instead of accepting that risk, Medicare routes all digital communication through its secured portal.
What You Can Do Through Your Medicare.gov Account
Your Medicare.gov account is a self-service portal, not an inbox. Once logged in, you can view your claims, check coverage details, compare Medicare Advantage and Part D plans, find providers, and view or pay your Medicare premium bill.3Social Security Administration. Manage Your Medicare Benefits For specific billing questions or concerns about claims, medical records, or expenses, Medicare tells you to log in or call 1-800-MEDICARE.4Medicare.gov. Contact Medicare
Think of the account as a window into your Medicare information. It lets you look things up. It doesn’t let you send a message and wait for a reply.
Live Chat Is the Closest Thing to Email
If you want a written back-and-forth without picking up the phone, Medicare offers live chat with a representative 24 hours a day, 7 days a week, except on some federal holidays.5Medicare.gov. Talk to Someone – Contact Medicare You can start a chat from the Medicare.gov website. Logging into your account first lets the representative see your specific information and answer account-level questions.
Chat handles the kinds of questions people wish they could email about: a confusing notice, a denied claim, an unexpected charge. For most beneficiaries, it’s the functional replacement for email.
Phone
The main Medicare number is 1-800-MEDICARE (1-800-633-4227), available 24 hours a day, 7 days a week.5Medicare.gov. Talk to Someone – Contact Medicare TTY users can call 1-877-486-2048. Representatives handle questions about Original Medicare claims, coverage, and billing.
Mailing Address
For written correspondence, the general mailing address is:4Medicare.gov. Contact Medicare
Medicare Contact Center Operations
PO Box 1270
Lawrence, KS 66044
That address takes general correspondence only. Formal submissions such as appeal requests have their own requirements and generally go to a specific Medicare Administrative Contractor (MAC), whose address appears on your Medicare Summary Notice or the relevant appeal form.
Appeals Don’t Go Through the Portal
If you disagree with a Medicare coverage decision, the first step is requesting a redetermination from the contractor that handled your claim. That request has to be made in writing, either by completing Form CMS-20027 or by sending a letter that includes your name, Medicare number, the specific service, the date of service, and why you disagree.6Centers for Medicare & Medicaid Services. First Level of Appeal: Redetermination by a Medicare Contractor Most MACs also accept electronic submission through their own websites.
Viewing a denied claim inside your Medicare.gov account does not start the appeal clock or count as a filing. If a deadline is close, send your appeal by mail or fax to the correct MAC rather than assuming any action inside the portal is enough.
Medicare Advantage and Part D Plans
If you’re enrolled in a Medicare Advantage plan or a standalone Part D prescription drug plan, questions about benefits, claims, prior authorizations, or provider networks go to the plan’s insurance company, not to Medicare. The 1-800-MEDICARE line and your Medicare.gov account cover Original Medicare (Parts A and B), not the day-to-day operations of private plans. Your plan’s customer service number is on your membership card and can also be looked up through the Medicare Plan Finder at Medicare.gov.
Emails Claiming to Be From Medicare
Because Medicare doesn’t contact you by email about account matters, any email that appears to come from Medicare asking you to verify your identity, share your Medicare number, or click a link to update your account is almost certainly a scam. Fraudulent messages often push urgency, threatening loss of benefits or offering free medical equipment and testing kits.
Legitimate Medicare representatives will not cold-contact you to demand your Medicare number, ask for banking details, or pressure you into enrolling in a plan. If you receive a suspicious email, don’t click any links or reply with personal information. Report suspected fraud by calling 1-800-MEDICARE or filing a report with the Department of Health and Human Services Office of Inspector General at oig.hhs.gov.7Medicare.gov. Reporting Medicare Fraud and Abuse