Common mistakes to avoid

Understand enrollment periods, coverage choices, costs, provider networks, appeals, and programs that may reduce Medicare expenses. These warning signs are intended to slow down a decision long enough to verify the facts.

Mistakes and warning signs

  • Assuming every Medicare plan covers the same doctors and prescriptions.
  • Choosing a plan based only on the monthly premium.
  • Missing an enrollment or appeal deadline because a notice was not opened promptly.
  • Giving a Medicare number to an unsolicited caller or door-to-door salesperson.
  • Canceling existing coverage before replacement coverage is confirmed in writing.
  • Treating general information as an individual eligibility or plan recommendation.

Stop and verify when

  • Someone demands immediate payment, secrecy, remote computer access, or personal credentials.
  • A deadline, coverage rule, eligibility amount, or legal requirement is stated without an official source and date.
  • A provider, contractor, plan, facility, or product cannot be independently verified.
  • The total cost, cancellation terms, exclusions, or appeal rights are unclear.
  • A recommendation ignores the person’s state, disability, medical condition, caregiver situation, or transportation.
  • A website copies an agency logo but uses an unfamiliar domain.

A safer response

1. Pause the transaction or decision when possible.

2. Save the notice, advertisement, contract, message, or bill.

3. Contact the responsible agency or company through an independently verified channel.

4. Ask a trusted person or qualified professional to review the decision.

5. Report suspected fraud, abuse, unsafe care, or discrimination to the appropriate authority.

Sources for verification

  • Medicare.gov — official or established source for current details.
  • Medicaid.gov — official or established source for current details.
  • SHIP Help — official or established source for current details.
  • CMS Care Compare — official or established source for current details.

Continue reading

Within this subject: Updates and Official Changes, Decision Checklist, Official Help and Trusted Starting Points, State-by-State Differences.

Related subjects: Social Security, SSI, SSDI, Pensions, and Income Benefits, Prescription Costs, Safety, Shortages, and Recalls, Medical Bills, Debt, Appeals, and Financial Assistance.

Last reviewed

This warning-sign guide was reviewed on 2026-07-30.