Costco expands Medicare Advantage flex-card use at any checkout

Costco has turned Medicare Advantage flex-card use into a front-end issue, not just a pharmacy or optical one. Members can now use those cards at any checkout, and Costco says the cards can be scanned like a debit card at the register. For cashiers, supervisors, and membership staff, that means the first question is no longer whether the card works in the building. It is which checkout lane will see it first, and who on the floor can explain it cleanly.

The June 2026 Costco Connection page on flex benefits gives front-line employees the clearest cue: Costco now supports cards from all Advantage flex-card issuers, and members can use them at any checkout, not just Pharmacy, Optical, or Hearing Aid. Costco’s own Rx benefits page says the company accepts FSA, HSA and Medicare Advantage Flex Benefits Cards at every checkout. In practice, that broadens the payment mix at the front end and reduces the chance that a member with hearing aid supplies, OTC items, or optical purchases gets bounced from one department to another before paying.

That matters because Medicare Advantage, also known as Part C, is a Medicare-approved plan offered by private companies that replaces Original Medicare for Part A and Part B coverage and usually includes Part D drug coverage. The Centers for Medicare & Medicaid Services says plans can structure supplemental benefits as a single maximum amount or as a list of selectable benefits, which is the policy setup that makes flex-card perks possible in the first place. Costco is responding to a benefit structure that has become familiar enough to show up on the sales floor.

The same Costco page also warns about Medicare scams and tells members to contact their plan directly if they get suspicious calls. Medicare advises beneficiaries to protect their Medicare number like a credit card and share it only with trusted providers, plans, or people who work with Medicare. That gives front-end and member-service staff a practical script when a shopper asks whether a flex-card offer sounds real: process the legitimate card at the register, then send the member back to their plan if the sales pitch around it feels off.

The broader market explains why Costco is making room for this at the register. California Health Advocates said in June 2025 that nearly a third of Medicare Advantage plans offered flex cards, and the Center for Medicare Advocacy said a month later that the cards raise consumer-protection concerns and can affect public benefits. Costco is not creating the benefit, but it is making its checkout lanes ready for it, and that will require clearer training for employees who are already expected to keep traffic moving.