Sam’s Club Pharmacy accepts most major health insurance, including Medicare Part D, Medicaid in many states, and commercial plans run through the three largest pharmacy benefit managers. The main exception worth flagging up front is TRICARE, which treats Sam’s Club as non-network. So the practical answer to what insurance Sam’s Club Pharmacy accepts is: almost certainly yours, unless you’re a military beneficiary, in which case you’ll pay a premium to fill there.
You also don’t need a Sam’s Club membership to use the pharmacy. Non-members can fill prescriptions at no additional fee.1Sam’s Club. Pharmacy at Sam’s Club Membership only matters if you want the Plus discount program described further down.
Private and Employer-Sponsored Plans
Sam’s Club Pharmacy participates in the retail networks of Express Scripts, CVS Caremark, and OptumRx.2Express Scripts (Evernorth Health Services). Retail Pharmacy Network List Those three pharmacy benefit managers process prescription claims for the vast majority of commercially insured Americans, so if your coverage comes through an employer or a marketplace plan, Sam’s Club is very likely in-network.
In-network doesn’t mean identical costs everywhere. Many plans use tiered pharmacy networks, where a “preferred” pharmacy carries lower copays than a standard in-network one. Your formulary matters just as much: generics usually sit at the lowest copay tier, preferred brand-name drugs cost more, and specialty medications sit at the top. Some plans add step therapy, meaning you have to try a cheaper alternative before the plan will cover what your doctor originally prescribed.
On a high-deductible plan paired with an HSA, you’ll pay the full negotiated price for most prescriptions until you meet the deductible, though certain preventive medications may be covered sooner depending on the plan.3HealthCare.gov. Understanding Health Savings Account-Eligible Plans HSA, FSA, and HRA funds can all be used for prescriptions at Sam’s Club.
Medicare Part D
Sam’s Club Pharmacy is widely included in Medicare Part D networks, but how it’s treated depends on the plan. Part D plans are run by private insurers, and each builds its own pharmacy network. Some plans list Sam’s Club as a preferred pharmacy with lower copays. Others include it as a standard in-network option with higher cost-sharing. Blue Cross NC, for example, lists Sam’s Club among its preferred retail pharmacies for certain Medicare Advantage plans.4Blue Cross NC. Medicare Prescription Drugs – Members
The cleanest way to check is the Medicare plan finder at medicare.gov. Enter your prescriptions and you’ll see exactly what each plan charges at Sam’s Club compared to other pharmacies. If a plan treats Sam’s Club as out-of-network, you can still fill there, but your share of the cost will likely be much higher.
Medicaid
Medicaid coverage at Sam’s Club depends on your state. Each state runs its own program with different pharmacy networks and reimbursement rules. Some states let beneficiaries fill at nearly any licensed pharmacy; others restrict coverage to a designated network. If your state uses Medicaid Managed Care Organizations, your MCO negotiates its own pharmacy contracts separately from the state’s fee-for-service program, so Medicaid eligibility alone doesn’t guarantee Sam’s Club is covered under your plan.
Call the number on the back of your Medicaid card, or check your MCO’s provider directory, before you fill. Out-of-network fills may not be reimbursed at all under managed care.
TRICARE Is Not In-Network
This is the one that trips people up. Sam’s Club pharmacies are non-network under TRICARE, which means non-network copayments apply.5TRICARE. Are Walmart Pharmacies Part of TRICARE’s Retail Network? For 2026, non-network copays for a 30-day supply of generic and brand-name formulary drugs are $48 or 20 percent of the total cost, whichever is greater. That’s a steep jump from in-network pricing.
TRICARE beneficiaries generally do better using the network pharmacy locator or the mail-order home delivery program, which often carries the lowest copays. If Sam’s Club happens to be the most convenient location, understand you’re paying extra for that convenience.
When Insurance Isn’t the Best Price
Sam’s Club Plus members get a prescription discount program that runs completely outside insurance. The program covers 10 select generic medications at $0 and more than 600 generics starting at $4 for a 30-day supply.6Sam’s Club. Membership Benefits For common generics like metformin, lisinopril, or amlodipine, Plus pricing can beat insurance copays, so it’s worth comparing.
The restrictions matter. Plus pricing can’t be combined with any insurance, discount card, or government health program such as Medicare or Medicaid.7Sam’s Club. Pharmacy It’s one or the other on a given fill. The $0 drug benefit isn’t offered in Arizona, California, or Minnesota, where those medications cost $2 for a 30-day supply instead.8Sam’s Club. Plus Member Benefits at the Pharmacy FAQ Pricing is also limited to commonly prescribed dosages.
Third-party discount cards like GoodRx are also accepted at Sam’s Club Pharmacy.9GoodRx. Using GoodRx at Walmart or Sam’s Club? Please Read They can’t be combined with insurance on the same transaction, and they can’t be stacked with Plus pricing.8Sam’s Club. Plus Member Benefits at the Pharmacy FAQ Ask the pharmacist to run the price three ways where it applies: through your insurance, through a discount card, and through the Plus program. They can usually tell you which pays least before you commit.
How to Verify Your Specific Plan
Call the pharmacy directly, or use your insurer’s online pharmacy locator. Most insurers let you search by pharmacy name and zip code to see whether a location is in-network, preferred, or out-of-network. When checking online, enter the exact medication, dosage, and quantity to get a real cost estimate rather than a yes-or-no coverage answer.
Your plan’s Summary of Benefits and Coverage lays out prescription drug coverage, including which tier your medications fall into and whether the plan uses a preferred pharmacy network.10UnitedHealthcare. Summary of Benefits and Coverage (SBC) Also check whether your plan charges different copays at retail versus mail-order. Many plans price 90-day mail-order fills lower per dose.
If a Claim Gets Denied at the Register
Denials happen even after you’ve verified coverage. The cause might be outdated insurance information on file, a billing code error, a formulary change, or a prior authorization requirement your doctor hasn’t completed. Sam’s Club pharmacists can review the claim on the spot and resubmit if the problem is a simple processing error.
If the denial stems from a formulary restriction or prior authorization, the fix usually runs through your prescribing doctor, who can submit a prior authorization request explaining why that specific medication is necessary. If that fails, you have a formal right to appeal. File an internal appeal within 180 days of the denial notice. The insurer then has 30 days to decide an appeal for a service you haven’t yet received, or 60 days for services already provided. Urgent cases get a 72-hour turnaround.11HealthCare.gov. Internal Appeals
If the internal appeal is denied, you can request an external review, where an independent third party evaluates the insurer’s decision and the insurance company no longer has the final say.12HealthCare.gov. Appealing a Health Plan Decision In urgent situations you can file for external review at the same time as your internal appeal rather than waiting for one process to finish. Keep copies of every denial letter, claim number, and piece of correspondence as you go.