Costco accepts Medicare for pharmacy and vision services, but not for general shopping

Costco's pharmacy and optical departments take Medicare Part B and most Medicare Advantage plans. Your regular Costco membership does not cover the cost of goods on the warehouse floor — you still pay out of pocket for groceries, household items, and other merchandise. The pharmacy and vision center operate separately from the membership and accept insurance as a secondary payer after your Medicare coverage processes the claim.

You do not need a Costco membership to use the pharmacy or optical department. This is a federal rule: Medicare requires that pharmacies and vision centers remain open to non-members. You can walk in, present your Medicare card, and fill a prescription or order glasses without paying the membership fee. Many people use Costco's pharmacy or vision services specifically because of this rule.

Key Takeaways

  • Costco pharmacy and optical accept Medicare Part B and most Medicare Advantage plans without requiring a warehouse membership.
  • Your out-of-pocket cost depends on your specific plan's deductible, copay, and coinsurance — not on Costco's prices alone.
  • Costco's pharmacy prices are often lower than other chains, which can reduce your coinsurance if your plan charges a percentage rather than a flat copay.
  • You will need to bring your Medicare card and a valid prescription (for pharmacy) or a current eye exam (for glasses or contacts).
  • Costco optical does not take vision-only plans like VSP or EyeMed — only Medicare Part B or Medicare Advantage plans that include vision.

How Medicare covers pharmacy at Costco

Medicare Part B does not cover most prescription drugs — that is Part D's job. If you have Part D coverage through a standalone plan or through a Medicare Advantage plan that includes drug coverage, you can use that at Costco. Costco is in-network for most major Part D plans, which means your copay or coinsurance applies at the register.

Bring your Medicare card and your Part D card (or the member ID from your Medicare Advantage plan). The pharmacy staff will run both through their system. Medicare processes first, then your plan's copay or coinsurance applies. If you do not have Part D coverage, you pay Costco's cash price for the medication — which is often lower than other pharmacies, but you do not receive any insurance benefit.

Costco's pharmacy also fills medications for people on Original Medicare who have no drug plan, and for uninsured customers. The prices are competitive, but without insurance you pay the full amount. If you are uninsured or underinsured, ask the pharmacist about Costco's cash pricing or manufacturer coupons before you leave.

How Medicare covers vision services at Costco

Medicare Part B covers eye exams and glasses or contact lenses, but only under specific conditions. You must have been diagnosed with an eye disease (such as glaucoma, diabetic retinopathy, or age-related macular degeneration) or had cataract surgery. Routine eye exams for people without these conditions are not covered. Costco's optical department will verify your diagnosis and coverage before you proceed.

If you have a Medicare Advantage plan that includes vision benefits, coverage varies widely. Some plans cover a routine eye exam and a set dollar amount toward frames and lenses each year. Others cover nothing. Check your plan documents or call the plan's customer service line before your appointment to learn what is covered and what your copay will be.

Vision-only plans like VSP, EyeMed, and Davis Vision are not accepted at Costco optical. Costco only takes Medicare Part B and Medicare Advantage plans. If you have a standalone vision plan, you will need to use an in-network provider from that plan instead.

What to bring when you visit Costco pharmacy or optical

For the pharmacy: bring your Medicare card, your Part D card (or Medicare Advantage member ID), and a valid prescription from your doctor. If you are picking up a refill, the pharmacy may already have your information on file. If it is your first time at Costco pharmacy, arrive a few minutes early so staff can set up your account.

For optical: bring your Medicare card, your Medicare Advantage member ID (if applicable), and a current eye exam from an eye doctor or optometrist. "Current" usually means within the last one or two years, depending on your condition and plan. If you do not have a recent exam, Costco optical can perform one on-site, but you will pay out of pocket for the exam itself unless it is covered by your plan. Bring a list of any medications you take, as some can affect your vision or eye health.

Costco pharmacy prices and your out-of-pocket cost

Costco's pharmacy prices are typically lower than chain pharmacies like CVS or Walgreens. This matters because your out-of-pocket cost depends on how your plan charges you. If your Part D plan uses a flat copay (for example, $10 for generic drugs), you pay that amount regardless of Costco's price. If your plan charges coinsurance (a percentage of the drug's cost), a lower pharmacy price means a lower coinsurance payment for you.

Some Part D plans have a coverage gap, sometimes called the "donut hole," where you pay a higher percentage of the drug cost after you have spent a certain amount. Filling prescriptions at a lower-cost pharmacy like Costco can help you stay below that threshold longer, or reduce what you pay if you enter the gap.

You can compare Costco's prices to other pharmacies before you fill a prescription. Call Costco pharmacy directly, or use a free tool like GoodRx or your plan's pharmacy finder to see prices at nearby locations. Some medications are significantly cheaper at Costco; others are not. It is worth checking, especially for drugs you take regularly.

Do you need a Costco membership to use pharmacy or optical?

No. Federal law requires that pharmacy and optical departments at warehouse clubs remain open to non-members. You can enter the pharmacy or optical area without a membership card, and staff cannot ask you to buy a membership to use these services. You will still need to present your Medicare card and a valid prescription or eye exam.

Some Costco locations have a separate entrance for the pharmacy and optical department, making it even clearer that you do not need to walk through the warehouse. If you are unsure, call your local Costco and ask where the pharmacy entrance is. Many people use Costco pharmacy or optical specifically because they do not want to pay for a membership.

What to do if Costco is not in your plan's network

Most major Part D plans include Costco in their network, but not all. Before you fill a prescription at Costco, check your plan's pharmacy directory or call the plan's customer service number. If Costco is out of network, you will pay a higher coinsurance or copay, or you may have to pay the full price and request reimbursement later — which is slower and less certain.

If Costco is out of network for your plan, you have options. You can use an in-network pharmacy instead, or you can ask your doctor to send the prescription to Costco anyway and pay out of pocket if the price is still lower than your in-network copay. Some people do this for expensive medications. Calculate the cost before you decide: Costco's cash price plus your out-of-pocket cost should be compared to your in-network copay.

For optical, the same rule applies. If your Medicare Advantage plan does not include Costco optical in its vision network, you will pay more or the full cost. Check your plan documents before you schedule an eye exam.

Frequently Asked Questions

Can I use my Medicare Advantage plan's vision benefits at Costco optical?

Only if your specific plan includes Costco optical in its vision network. Not all Medicare Advantage plans do. Call your plan's customer service number or check your member handbook to confirm. If Costco is in-network, your copay and coverage limits explore. If it is out of network, you will pay more or the full cost.

What if I have Original Medicare and no Part D plan — can I still use Costco pharmacy?

Yes. You can fill prescriptions at Costco and pay the cash price. Costco's prices are often lower than other pharmacies, so it may be worth comparing before you fill elsewhere. You will not receive any insurance benefit, but you still do not need a membership to use the pharmacy.

Does Costco accept Medicare for hearing aids or other medical equipment?

Costco does not have a hearing aid department at most locations, and Medicare coverage for hearing aids is limited. Some Medicare Advantage plans include hearing benefits, but you would need to check whether Costco is in that plan's network. For other medical equipment, Costco is not typically a provider — you would use a durable medical equipment supplier instead.

Can I use my vision insurance plan (like VSP) at Costco optical?

No. Costco optical only accepts Medicare Part B and Medicare Advantage plans that include vision. Standalone vision plans like VSP, EyeMed, and Davis Vision are not accepted. You will need to use an in-network provider from your vision plan.

What happens if I do not have a current eye exam when I visit Costco optical?

Costco optical can perform an eye exam on-site. You will pay out of pocket for the exam unless it is covered by your Medicare plan. Once you have the exam, you can order glasses or contacts. Ask about the cost of the exam before you schedule so there are no surprises.