Dad gave his Social Security number to a Medicare caller. What now?

Freeze his credit, report the call, and watch his Medicare claims.

3 min readUpdated September 2026

Published by Navigate Care. How we source our guides

In this guide 4 sections

When someone gives a Social Security number to an unsolicited caller offering Medicare benefits, the immediate priority is protecting their credit and reporting the possible identity theft. Medicare warns people not to share personal information with callers they did not contact first.


01

Freeze his credit first

A credit freeze can stop someone from opening a new credit account in his name. It is free, does not affect his credit score, and stays in place until he lifts it.

  1. 1.Place a credit freeze separately with Equifax, Experian, and TransUnion.
  2. 2.Report the possible identity theft through the Federal Trade Commission at IdentityTheft.gov. Keep the report and notes about the call.
  3. 3.Call Medicare at 1-800-633-4227. Explain that an unsolicited benefits caller obtained his Social Security number.
  4. 4.Create or sign in to his secure Medicare.gov account. Compare processed claims, provider statements, and his records. Report services or charges he does not recognize.

02

Why the call is suspicious

Medicare does not call people uninvited to sell anything or ask for private information. Medicare may request information in limited situations, such as returning a call after someone contacted Medicare or reported fraud.


03

Get help reviewing Medicare activity

Senior Medicare Patrol programs help Medicare beneficiaries, families, and caregivers prevent, detect, and report health care fraud, errors, and abuse. The national resource center lists a contact for every state and territory it serves.


04

Watch for medical identity theft

Medical identity theft happens when someone uses another person's information without permission to commit Medicare fraud or other crimes. Check Medicare claims and provider statements regularly for unfamiliar services, dates, or charges.


Questions families ask

Is a fraud alert enough, or should he freeze his credit?

A credit freeze blocks new credit accounts until it is lifted. An initial fraud alert tells businesses to verify his identity before opening credit, but it does not block access to his credit report. A freeze requires contacting all three credit bureaus. An initial fraud alert requires contacting only one, which must notify the other two.

Does a credit freeze cost anything?

No. Placing or lifting a credit freeze is free, and a freeze does not affect his credit score.

Should he call Medicare even if he shared only his Social Security number?

Yes. The call involved Medicare benefits, and Medicare directs people to call 1-800-MEDICARE when an unsolicited caller requests personal information. He should also contact the FTC about possible identity theft.

Who can help us review suspicious Medicare claims?

Call 1-800-MEDICARE or contact the Senior Medicare Patrol in his state. Senior Medicare Patrol programs help beneficiaries and families detect and report Medicare fraud, errors, and abuse.

Was this guide helpful?

Your feedback helps us make the information clearer.

Rate this guide from 1 to 5
Not helpfulVery helpful
Report an error

Quote the sentence or name the section, explain the problem, and add a source link if you have one. Please leave out medical records, insurance numbers and contact details.

0/1,000 characters

For help with your own care, request a free introductory call.

Navigate Care

Have a question about the next step?

A navigator can help organize appointments, paperwork and follow-ups by phone, working with the doctors you already have. Medicare may cover navigation for eligible patients.

Free
initial call
Part B
for eligible patients
Upfront
cost confirmed first

Or call 628 234 2273 (NAV-234-CARE). Free initial call. No obligation.

Request a callback and our team will reach out within one business day. We explain eligibility and any expected cost for ongoing services before you decide.

Have a general question? Join CARE, our Facebook community, to ask about navigating care and connect with patients and caregivers. The group is public; please keep personal medical and insurance details private.

Keep reading