What do the new Medicare cards look like?

Here is an example of the new Medicare card (as of April 2018) with unique and randomly-assigned Medicare Beneficiary Identifier (MBI) (source: CMS)

New Medicare Card with Medicare Beneficiary Identifier (MBI) (source: CMS)

You will notice from the example graphic that the new Medicare card:

Is still red, white, & blue,
Includes your Medicare Part A and Medicare Part B eligibility dates,
Does not include your gender or a place for a signature,
Is slightly smaller than your old Medicare card (and is now about the size of a credit card),
Is made of paper, not plastic, and
Includes your 11-charecter Medicare Beneficiary Identifier (MBI), not your 9-digit Social Security-based Health Insurance Claim Number (HICN)
The new Medicare cards may have QR codes. This square code may be on the front of Medicare cards for Railroad Retirement Board (RRB) beneficiaries and on the back of the card for all other Medicare beneficiaries. These are legitimate (official) Medicare cards. (updated: 2018-06-21)

As a comparison, the following graphic is an example of the original Medicare card with Social Security-based Health Insurance Claim Number (HICN) (source: CMS)

Original Medicare card with Social Security-based Health Insurance Claim Number (HICN) (source: CMS)

Note that Railroad Retirement Board (RRB) beneficiaries will also have a new red, white, & blue card with the RRB logo and the MBI. The new RRB Medicare cards may have a QR code (square code) on the front of Medicare card.

New RRB Card with Medicare Beneficiary Identifier (MBI) (source: CMS)

(Sources include: https://www.cms.gov/ newcard, https://www.medicare.gov/ forms-help-and-resources/ your-medicare-card.html, https://www.cms.gov/Medicare/ New-Medicare-Card/ Partners-and-Employers/ Partners-and-employers.html)