What Changed With CGM Coverage at Pharmacies

Medicare now covers continuous glucose monitors (CGMs) through retail pharmacies in addition to the traditional mail-order and durable medical equipment (DME) supplier routes. This is relatively new — the shift began in 2023 and continues to expand. You can now walk into many chain pharmacies and get a CGM prescription filled the same way you would get insulin or test strips, rather than waiting for a mail delivery or ordering through a specialized DME company.

The coverage itself is not new. Medicare has covered CGMs for people with diabetes since 2017, but the places where you could get one were limited. Adding pharmacy access means faster pickup, the ability to speak with a pharmacist face-to-face, and the option to switch suppliers if your usual source runs out of stock or stops carrying your brand.

Not every pharmacy participates yet, and not every CGM brand is available at every location. The major chains — CVS, Walgreens, Walmart, and others — have rolled out CGM programs, but availability varies by region and by individual store. Your coverage through Medicare Part B remains the same; what changed is where you can pick it up.

Key Takeaways

  • Medicare covers CGMs through retail pharmacies as an alternative to mail-order and DME suppliers, though not all pharmacies or all brands are available everywhere.
  • You still need a prescription from your doctor, and your doctor must document that you use insulin or meet other Medicare criteria for CGM coverage.
  • Pharmacy pickup is typically faster than mail-order but may cost the same out-of-pocket amount depending on your plan and deductible status.
  • You can use a pharmacy CGM program even if you have used a different supplier before — there is no lock-in period.
  • Not all CGM brands (Dexcom, Freestyle Libre, Medtronic Guardian) are stocked at all pharmacies, so call ahead to confirm availability.

Which Pharmacies Stock CGMs and Which Brands They Carry

CVS, Walgreens, Walmart, and Kroger pharmacies are the largest chains offering CGM programs under Medicare. Each chain has negotiated agreements with specific manufacturers, so the brands available differ by pharmacy and sometimes by location within the same chain.

Dexcom G6 and G7 are the most widely stocked across major chains. Freestyle Libre (Abbott) is available at many locations but not all. Medtronic Guardian is less commonly found in retail pharmacies and may still require ordering through a DME supplier or Medtronic directly. Before you fill a prescription, call the pharmacy to confirm they stock your brand and that they accept Medicare for CGM coverage — some locations may still be in the process of setting up their programs.

If your preferred brand is not available at nearby pharmacies, you can still use a mail-order DME supplier or order directly from the manufacturer. Your Medicare coverage does not change based on where you get the device.

How to Get a CGM Through a Pharmacy

Start with your doctor. You need a prescription that states the specific CGM brand and model. Your doctor must also document in your medical record that you meet Medicare's criteria — typically that you use insulin multiple times daily or have a recent blood sugar reading above a certain threshold. If your doctor has prescribed a CGM before, they usually have this documentation already.

Once you have the prescription, call the pharmacy where you want to pick it up. Give them your prescription number and ask them to confirm they stock that brand and accept your Medicare coverage. Some pharmacies will verify your coverage over the phone; others may ask you to come in. Bring your Medicare card and any other insurance cards you carry.

At pickup, you may owe a copay or coinsurance depending on your specific Medicare plan and whether you have met your Part B deductible for the year. Ask the pharmacy what you owe before you leave. If the cost is higher than expected, ask whether the pharmacy can contact your doctor about switching to a brand with lower out-of-pocket cost.

What Medicare Part B Covers for CGMs

Medicare Part B covers the CGM device itself — the sensor, transmitter, and receiver if applicable — at 80 percent of the approved amount after you meet your annual deductible. You pay 20 percent coinsurance. The exact dollar amount varies depending on the brand and model, and Medicare's approved amount may differ from the pharmacy's retail price.

Replacement sensors are covered under the same 80/20 split. If you need a new sensor every 10 days (as with Dexcom) or every 14 days (as with Freestyle Libre), Medicare covers the cost of those replacements as long as your prescription remains active. You do not need a new prescription for each sensor — one prescription typically covers a year's worth of replacements.

Supplies like adhesive patches, applicators, or charging cables may or may not be covered depending on whether they are considered part of the device or separate supplies. Ask the pharmacy whether these items are included in the device cost or billed separately.

Switching From a Mail-Order or DME Supplier to a Pharmacy

You can switch to pharmacy pickup at any time. There is no lock-in period or waiting period between suppliers. If you have been using a mail-order DME company and want to try a pharmacy instead, straightforward get a new prescription from your doctor and take it to the pharmacy of your choice.

If you are mid-cycle with your current supplier — for example, you just received a box of sensors from mail-order — you do not have to use them up before switching. You can start with the pharmacy when ready. However, contact your previous supplier to cancel future shipments so you do not end up with duplicate stock.

Some people keep both options active: they use a pharmacy for routine pickups but maintain a mail-order relationship as a backup if the pharmacy runs out of stock. This is allowed under Medicare and can be useful if your preferred brand is not always in stock locally.

Common Issues and How to Solve Them

The pharmacy says they do not accept Medicare for CGMs. This usually means the pharmacy has not yet set up their CGM program or the individual store location has not enrolled. Ask to speak with the pharmacy manager and ask whether another location in your area carries CGMs. You can also contact the manufacturer directly — Dexcom, Abbott, and Medtronic all have programs to help you find a participating pharmacy or arrange mail-order delivery.

Your brand is not in stock. Ask the pharmacy when they expect the next shipment. If you need a sensor urgently, ask whether they can order it for next-day pickup or whether you should use your previous supplier temporarily. Some pharmacies will special-order a brand they do not normally stock if you give them advance notice.

Your out-of-pocket cost is higher than expected. This usually happens if you have not met your Part B deductible yet. Ask the pharmacy to break down the charge — deductible, coinsurance, and any brand-specific fees. If the cost seems wrong, ask the pharmacy to contact Medicare to verify the approved amount. You can also call Medicare directly at 1-800-MEDICARE to check your deductible status.

Your doctor's prescription was rejected. The pharmacy may need additional information from your doctor — such as documentation that you use insulin or your most recent blood sugar reading. Ask the pharmacy what information they need and have them contact your doctor's office directly rather than calling your doctor yourself.

Frequently Asked Questions

Do I need a new prescription to switch from mail-order to a pharmacy?

You need a new prescription if your previous one has expired or if your doctor wrote it specifically for a mail-order supplier. If your prescription is current and does not specify a supplier, you can take it directly to a pharmacy. Call your doctor's office to confirm the prescription is still active and does not have any restrictions on where it can be filled.

Will my out-of-pocket cost be different at a pharmacy versus mail-order?

Your Medicare coverage is the same regardless of where you get the CGM, so your coinsurance percentage and deductible do not change. However, the pharmacy's retail price may differ from what a mail-order company charges, which can affect your 20 percent coinsurance. Ask the pharmacy for the total cost before you pick up the device.

What if my pharmacy runs out of my brand?

Ask when the next shipment arrives. If you cannot wait, you can use your previous mail-order supplier temporarily or contact the manufacturer to find another participating pharmacy nearby. You are not locked into one pharmacy — you can fill prescriptions at different locations as needed.

Does Medicare cover the training on how to use a CGM from a pharmacy?

Medicare covers training through your doctor or a certified diabetes educator, not through the pharmacy itself. The pharmacy will show you how to insert the sensor and sync the device, but formal training on diabetes management is separate. Ask your doctor whether they offer training or can refer you to an educator.

Can I use a pharmacy CGM if I have a Medicare Advantage plan?

Yes, but coverage details vary by plan. Some Medicare Advantage plans cover CGMs through pharmacies the same way Original Medicare does; others may have different rules or preferred suppliers. Call your plan's customer service number to confirm your coverage before you fill a prescription.