Why would my Medicare ID number change?

Asked by: Brennon Carter  |  Last update: October 5, 2025
Score: 4.5/5 (70 votes)

Medicare beneficiaries or their authorized representatives can ask to change their MBIs; for example, if the MBI is compromised. CMS can also change an MBI. It's possible for your patient to seek care before getting a new card with the new MBI.

Why did my Medicare ID number change?

A new unique Medicare number will replace the current Health Insurance Claim Number (HICN) on the new Medicare cards. We're taking this step to protect people with Medicare from fraudulent use of SSNs, which can lead to identity theft and illegal use of Medicare benefits.

Why are Medicare numbers changing in 2024?

On July 8, 2024, WPS notified CMS of the data breach, resulting in action taken to issue new MBIs and Medicare cards to affected beneficiaries.

Are new Medicare cards due to breach?

In response to a May 2023 data breach, nearly one million Medicare beneficiaries are being issued new Medicare Beneficiary Identifiers (MBIs) and Medicare cards. This change may affect your clients' healthcare coverage and enrollment applications.

Do you get a new Medicare number?

Your new card will have a new Medicare Number that's unique to you, instead of your Social Security Number. This will help to protect your identity. Your Medicare coverage and benefits will stay the same.

How to Find Your Medicare ID Number (Without Your Card)

20 related questions found

Why was I mailed a new Medicare card?

Why did I get it? Your Medicare coverage, Medicare Number, or name changed, or you (or someone on your behalf) asked for a new Medicare card. When do I get it? When you (or someone on your behalf) asks for a new card, or when your Medicare coverage, Medicare Number or name changes.

Do Medicare numbers expire?

All people with Medicare have a Medicare number. It is not the same number as the one used for Social Security. Healthcare providers use the Medicare number on the card to bill services. Generally, a person does not have to renew their Medicare card each year, as it will automatically renew.

When did Medicare cards change?

A. Background on the new Medicare Number

The Centers for Medicare & Medicaid Services (CMS) developed a new number called the Medicare Beneficiary Identifier (MBI), which replaces the SSN-based Health Insurance Claim Number (HICN) on the Medicare card. CMS began mailing the new Medicare cards in April 2018.

What is the latest data breach in 2024?

The biggest data breaches of 2024
  • Infosys (8.5 million records) ...
  • UnitedHealth (100 million individuals) ...
  • Young Consulting (950,000 individuals) ...
  • Ticketmaster (40 million individuals) ...
  • Evolve Bank (7.6 million individuals) ...
  • Dell (49 million customers and 10,000 employees) ...
  • Tile (66 million individuals) ...
  • Snowflake (Unknown)

What to do if a Medicare card is hacked?

If you need to replace your card because you think that someone else is using your number, call the Senior Medicare Patrol (SMP) (1-877-808-2468) and 1-800-Medicare.

What is the new Medicare rule for 2025?

Medicare Part D cap of $2,000

Beginning January 1, 2025, people with Part D plans through traditional Medicare and Medicare Advantage plans with prescription drug coverage won't pay more than $2,000 over the calendar year in out-of-pocket costs for their prescription medications.

How do you qualify for $144 back from Medicare?

To be eligible for the Medicare Part B Giveback Benefit, you must:
  1. Be enrolled Original Medicare (Parts A and B)
  2. Pay your own Part B premium.
  3. Live in the service area of a plan that offers a Part B giveback.

Why are hospitals refusing Medicare Advantage plans?

Among the most commonly cited reasons are excessive prior authorization denial rates and slow payments from insurers. In 2023, Becker's began reporting on hospitals and health systems nationwide that dropped some or all of their Medicare Advantage contracts.

Why am I getting a new Medicare card in 2024?

For example, scammers may falsely tell you that Medicare is issuing new cards—perhaps a card that is plastic or metal, or a card that has a chip in it. The scammers may tell you that for them to send your new card, you need to verify your identity, which could include your Medicare number.

What do the new Medicare ID numbers look like?

How will the MBI look on the new card? The MBI's 2nd, 5th, 8th, and 9th characters will always be a letter. Characters 1, 4, 7, 10, and 11 will always be a number. The 3rd and 6th characters will be a letter or a number.

Does everyone have a Medicare ID number?

Every person with Medicare is given a randomly generated, 11-character (alpha-numeric) ID, called a “Medicare Number.” Your Medicare Number is a unique ID number for Medicare, not your Social Security number.

How do I know if my data was breached?

Check for suspicious logins into your accounts and activate notifications for them if the service you use provides them. Be on the lookout for misleading password retrieval emails and messages and only change your credentials by logging into the account from the official website.

What bank was hacked in 2024?

The largest data breach from a financial services company in 2024 affected LoanDepot , a top-ranked mortgage lender based in Irvine, California. Threat actor Alphv, also known as Blackcat, took responsibility for the attack . The attack, which the lender says took place from Jan. 3 to Jan.

What is the average payout for a data breach?

According to Sophos's State of Ransomware 2024 report, the average ransom payout was $812,360. Through their surveys, Coveware found a $850,700 average payout, and median payout of $200,000 in Q3 2023.

Why would my Medicare number change?

The Centers for Medicare & Medicaid Services (CMS) made the number change to protect people using Medicare from identity theft or illegal use of Medicare benefits.

Did Medicare have a data breach?

The Medicare beneficiaries' personally identifiable information was exposed between May 27 and May 31, 2023, but the company patched its MOVEit software and initially thought none of its records had been part of the data breach.

What is the difference between the new Medicare card and the old card?

The new Medicare card will look similar to your old one, but there are differences. The new card will still be red, white, and blue, but will show a unique identification number instead of your Social Security number.

Can someone use your Medicare number?

Even though we're removing Social Security Numbers, the new number is still useful to thieves to commit health care fraud. Don't share your Medicare Number with anyone who contacts you by telephone, email or in person, unless you've given them permission in advance.

When did new Medicare numbers go into effect?

New Medicare ID Numbers Mandatory January 1, 2020. Medicare has removed Social Security numbers from Medicare cards. This step is to help prevent fraud, help eliminate medical identity theft, and to protect program funding and the private healthcare and financial information of our Medicare beneficiaries.

What are the 6 things Medicare doesn't cover?

Some of the items and services Medicare doesn't cover include:
  • Eye exams (for prescription eyeglasses)
  • Long-term care.
  • Cosmetic surgery.
  • Massage therapy.
  • Routine physical exams.
  • Hearing aids and exams for fitting them.