Finding the right Medicare DME supplier isn’t just a matter of convenience — using the wrong supplier can mean Medicare pays nothing, even if your equipment is fully covered and your doctor’s prescription is perfect.
This guide explains how to find a Medicare-approved supplier in your area, what questions to ask before you order anything, and how the DMEPOS Competitive Bidding Program affects which suppliers you can use.
Why Your Choice of Supplier Matters So Much
Medicare Part B covers 80% of approved DME costs after your $283 deductible — but only when you use a supplier who meets two specific requirements:
- The supplier must be enrolled in Medicare (formally accepted into the Medicare program and bound by its rules)
- The supplier should accept assignment (agree to accept Medicare’s approved rate as full payment)
If your supplier isn’t Medicare-enrolled, Medicare won’t pay anything — not even a partial payment. If your supplier doesn’t accept assignment, they can legally charge up to 15% above the Medicare-approved rate, and you pay the difference out of pocket.
These aren’t technicalities. They’re the difference between paying 20% of the cost and paying 100% of it. For a power wheelchair that Medicare approves at $3,000, that’s the difference between paying $600 and paying $3,000 or more.
How to Use the Medicare Supplier Directory
The official tool for finding Medicare-enrolled suppliers is the Medicare Care Compare directory, available on Medicare.gov. Here’s how to use it effectively:
Step 1: Go to Medicare.gov/care-compare Select “Suppliers of Medical Equipment & Supplies” from the search options.
Step 2: Enter your ZIP code and the equipment category You can search by type of equipment: walkers and mobility aids, wheelchairs, home oxygen, diabetes supplies, CPAP equipment, hospital beds, and others.
Step 3: Review the results The directory shows Medicare-enrolled suppliers in your area. It does not distinguish between suppliers who accept assignment and those who don’t — that’s why you need to call and ask directly.
Step 4: Call and ask two questions before ordering:
- “Are you enrolled in Medicare?”
- “Do you accept assignment for this equipment?”
Get the answers in writing (email confirmation works) before you place any order. A verbal confirmation that later turns out to be wrong is very difficult to dispute after the fact.
Step 5: Compare at least 2–3 suppliers Pricing, wait times, delivery areas, and customer service vary significantly. Medicare-enrolled suppliers in the same ZIP code can have very different levels of responsiveness, especially for complex equipment like power wheelchairs or home oxygen systems.
What Is the DMEPOS Competitive Bidding Program?
In many larger metro areas, Medicare uses the DMEPOS Competitive Bidding Program — and it has major implications for which suppliers you can use.
Under this program, Medicare requires suppliers in participating areas to bid for contracts. Only the suppliers who win contracts (called “contract suppliers”) are eligible to provide certain categories of equipment to Medicare beneficiaries in those areas. If you live in a competitive bidding area and use a non-contract supplier for a covered category, Medicare will not pay — regardless of whether the supplier is Medicare-enrolled.
Categories covered by competitive bidding (as of 2026):
- Walkers and other mobility aids
- Hospital beds and accessories
- Support surfaces (specialty mattresses)
- Home oxygen equipment and supplies
- Standard power wheelchairs and scooters
- Continuous positive airway pressure (CPAP) devices
- Commode chairs and certain bathroom safety equipment
- Diabetic testing supplies (mail-order)
- Enteral nutrition equipment and supplies
How to check if you’re in a competitive bidding area: Call 1-800-MEDICARE (1-800-633-4227) and tell them your ZIP code and what equipment you need. They’ll confirm whether competitive bidding applies and which contract suppliers serve your area. You can also check at the DMEPOS Competitive Bidding Program website.
If competitive bidding applies to your equipment and area, you must use a contract supplier. The good news: contract suppliers are often more price-competitive than non-contract suppliers, precisely because they won their contracts through a bidding process.
Finding Suppliers for Specific Equipment Types
Different types of DME have different supplier ecosystems. Here’s where to focus your search:
Walkers, Rollators, and Mobility Aids
For standard walkers, most local medical supply stores, home health agencies, and durable medical equipment dealers are Medicare-enrolled. Chain pharmacies like CVS, Walgreens, and Rite Aid often carry Medicare-covered walkers in their medical supply sections. Ask whether they accept assignment before purchasing.
For more complex mobility aids, see our guides to the best walkers for seniors and the best mobility scooters for seniors — these reviews include notes on Medicare coverage eligibility.
Power Wheelchairs and Scooters
Power wheelchairs and scooters require prior authorization and a face-to-face physician evaluation. Many specialized DME suppliers focus specifically on complex rehab and power mobility equipment. Ask whether the supplier has a Certified Rehab Technology Supplier (CRTS) on staff — this credential indicates specialized expertise with Medicare-covered power mobility.
Note that power wheelchairs and scooters are almost always in competitive bidding categories. Contract suppliers in your area are the only eligible option.
Home Oxygen Equipment
Home oxygen suppliers are almost universally Medicare-enrolled, since oxygen is predominantly a Medicare-covered benefit. However, supplier quality varies enormously. Ask about:
- Average response time for equipment replacement or repairs
- 24/7 emergency service availability
- What happens if you travel out of state (Medicare requires oxygen suppliers to arrange equipment delivery when you travel)
CPAP Equipment and Supplies
Many CPAP suppliers operate mail-order models and are Medicare-enrolled. Mail-order suppliers are subject to competitive bidding, so verify contract status. Local DME suppliers often provide CPAP equipment as well; they may offer in-person support that mail-order suppliers can’t match.
Diabetic Testing Supplies
Mail-order diabetic supply companies that are Medicare-enrolled under the competitive bidding program tend to offer the best pricing. Your doctor can write a standing order for 3-month supplies, which simplifies the reorder process.
Red Flags: Suppliers to Avoid
Some suppliers use Medicare billing practices that create problems for beneficiaries or are outright fraudulent. Watch for these warning signs:
Unsolicited contact. Legitimate Medicare DME suppliers don’t cold-call you or knock on your door. If a company contacts you offering “free” equipment that “Medicare will pay for,” that’s a fraud signal. Medicare fraud costs the system billions annually and can result in your Medicare ID being used for fraudulent billing you’ll have to dispute.
Won’t answer the enrollment and assignment questions. Any legitimate Medicare-enrolled supplier will immediately and clearly confirm their enrollment status and assignment policy. Evasive answers are a red flag.
Asks you to sign a waiver of liability upfront. A “waiver of liability” or “advanced beneficiary notice” (ABN) may be legitimate for items Medicare might not cover — but it should be explained clearly, not buried in paperwork. If they hand you something to sign without explaining what it is, ask questions before signing.
Prices that seem too high or too low. Medicare has set approved amounts for DME. If a supplier quotes a price dramatically higher than the Medicare-approved amount, something is wrong. If they promise equipment for “nothing out of pocket” when Medicare’s cost-sharing rules say otherwise, verify before proceeding.
Not in the Medicare Supplier Directory. If a supplier doesn’t appear in the Medicare.gov directory and can’t provide their Medicare enrollment (PTAN) number on request, assume they are not enrolled.
What to Do If You Can’t Find a Supplier in Your Area
Rural areas sometimes have limited Medicare-enrolled DME suppliers, particularly for specialized equipment. Options include:
Mail-order suppliers. For equipment that can be safely shipped — diabetic supplies, CPAP equipment, orthopedic braces, certain mobility aids — mail-order Medicare-enrolled suppliers are a practical option. The Medicare Supplier Directory includes mail-order suppliers.
Regional medical centers. Large hospitals and health systems often have affiliated DME supply operations or can refer you to contract suppliers who serve rural areas.
Your State Health Insurance Assistance Program (SHIP). Every state has a SHIP, which provides free, unbiased Medicare counseling. SHIP counselors know local supplier networks and can help you identify enrolled suppliers who serve your area. Find your state’s SHIP at shiphelp.org.
1-800-MEDICARE. Medicare’s helpline (1-800-633-4227) can identify contract suppliers in competitive bidding areas and enrolled suppliers in your ZIP code. They can also tell you which suppliers have received complaints.
Getting the Process Right From the Start
Once you’ve identified a Medicare-enrolled supplier who accepts assignment, the rest of the process is straightforward. Your supplier will:
- Verify your Medicare enrollment
- Contact your doctor for the written prescription and documentation
- Check whether prior authorization is needed and submit the request if so
- Deliver the equipment once approved
- Submit the claim to Medicare on your behalf
Your job is to keep copies of everything — the prescription, the supplier’s intake paperwork, and every Explanation of Benefits statement Medicare sends you. These documents protect you if there’s ever a billing dispute.
For a complete walkthrough of the Medicare DME approval process from prescription to delivery, see our guide on how to get Medicare DME coverage.
If your claim is denied despite using the right supplier and getting a proper prescription, don’t stop there. Most Medicare DME denials can be successfully appealed. Our guide to appealing a Medicare DME denial explains the five-level appeals process and what you need to win.
Frequently Asked Questions
Can I use any pharmacy for Medicare DME?
Some pharmacies are Medicare-enrolled for basic DME like walkers, canes, and blood glucose monitors. However, large chain pharmacies may not be contract suppliers in competitive bidding areas, which matters for certain equipment categories. Call your pharmacy and ask whether they’re enrolled in Medicare and whether they accept assignment for the specific item you need.
What if my preferred supplier isn’t Medicare-enrolled?
You can still use them — but you’ll pay full price out of pocket. You cannot seek reimbursement from Medicare for equipment purchased from a non-enrolled supplier. If the supplier is willing to become Medicare-enrolled, that process takes 60–90 days.
Do I need a referral from my doctor to contact a DME supplier?
No. You can contact DME suppliers directly to ask about their Medicare enrollment status, the types of equipment they carry, and their delivery area. However, you’ll need your doctor’s written prescription before the supplier can submit a Medicare claim.
Can I switch DME suppliers after I’ve already received equipment?
Yes, with some limitations. For rented equipment, you can ask Medicare to transfer your rental to a new supplier. For purchased equipment, the transition is simpler. Contact 1-800-MEDICARE for guidance on your specific situation.
If you’re managing multiple health needs alongside your DME, see our guide to the best pill organizers for seniors — staying organized with medications is just as important as having the right equipment.
