Yes, Quest Diagnostics accepts Medicare at most of its locations
Quest Diagnostics is one of the largest laboratory testing companies in the United States, and the vast majority of its patient service centers accept Medicare. When you arrive with your Medicare card, Quest will bill Medicare directly for covered lab tests. You typically pay only your copay or coinsurance at the time of service — usually between $0 and $50 per test, depending on your specific plan.
However, not every Quest location accepts every Medicare plan. Some independent or franchise locations may have different billing arrangements, and a small number of Quest facilities operate outside the Medicare network. Before you go in for testing, it takes just a few minutes to confirm that your specific location accepts your plan.
Key Takeaways
- Most Quest Diagnostics locations accept Original Medicare and Medicare Advantage plans, but you should confirm your specific location accepts your plan before your appointment.
- You can call Quest directly at 1-800-222-0446 or use the location finder on Quest.com to verify Medicare acceptance at your nearest center.
- Medicare covers routine lab work ordered by your doctor, but Quest cannot perform tests without a doctor's order — you will need a lab requisition from your healthcare provider.
- If your doctor orders a test that Medicare does not cover, Quest will tell you the out-of-pocket cost before the test is performed.
- Some tests require prior authorization from Medicare before Quest can bill, so your doctor's office usually handles this step before sending you to the lab.
How to confirm Quest accepts your Medicare plan
The fastest way is to call Quest's customer service line at 1-800-222-0446. Have your Medicare card handy. Tell them your location (city and state, or zip code) and your plan type — Original Medicare, Medicare Advantage, or the specific plan name if you know it. They can tell you in one call whether that location accepts your coverage.
You can also visit Quest.com and use their location finder tool. Enter your zip code or city, and the results will show which centers are nearby. Click on a specific location to see which insurance plans it accepts. If your plan is listed, you are good to go. If you do not see your plan listed or the information is unclear, call that location directly — the phone number appears in the location details.
If you are on a Medicare Advantage plan, check your plan's provider directory as well. Your plan's website or member handbook lists which labs are in-network. Quest is in-network for most major Medicare Advantage plans, but a few regional plans may have different arrangements.
What to bring when you go to Quest
You will need three things: your Medicare card, a photo ID, and a lab requisition from your doctor. The requisition is the order that tells Quest which tests to perform. Your doctor's office can send this to Quest electronically, mail it to you, or give it to you in person. Do not go to Quest without this order — they cannot perform any testing without it.
If you have a Medicare Advantage plan, bring that card too. Some locations ask for both cards at check-in. If you have a secondary insurance (like a retiree plan or Medigap), bring that card as well, though it is not required.
Arrive a few minutes early to allow time for check-in. Quest will verify your insurance, confirm your identity, and collect any copay or coinsurance due at that time. Most copays range from $0 to $50 per test, though the exact amount depends on your plan and the specific test ordered.
What Medicare covers at Quest
Medicare covers routine lab work that your doctor orders as part of your medical care. This includes blood tests for cholesterol, blood sugar, kidney function, liver function, and thyroid levels. Medicare also covers tests to monitor medications you are taking and tests to diagnose or rule out specific conditions your doctor suspects.
Medicare does not cover lab work done purely for screening or wellness purposes when you have no symptoms or medical reason. For example, if your doctor orders a comprehensive metabolic panel because you are on a medication that requires monitoring, Medicare covers it. If you ask for the same test just to "check your overall health" with no medical reason, Medicare will not pay for it.
Some tests require prior authorization from Medicare before Quest can bill. This means your doctor's office must contact Medicare in advance to confirm the test is medically necessary. Your doctor's office usually handles this automatically, but if there is a delay, Quest will let you know. Do not assume a test is covered just because your doctor ordered it — Quest will tell you before the test if there is a coverage issue.
If a test is not covered by Medicare
Quest is required to tell you in advance if a test is not covered by Medicare or if you will owe money out of pocket. Before the test is performed, Quest staff will explain the cost and ask you to sign an Advance Beneficiary Notice (ABN). This form tells you that Medicare will not pay and that you are choosing to have the test done anyway at your own expense.
You have the right to refuse a test if you do not want to pay out of pocket. Signing the ABN does not obligate you — it straightforward means you understand the cost. If you have questions about whether a test is necessary or whether there is a covered alternative, ask your doctor before you go to Quest.
What to do if Quest says it does not accept your plan
If a Quest location tells you it does not accept your specific Medicare plan, you have options. First, ask if there is another Quest location nearby that does accept your plan — sometimes different centers in the same area have different billing arrangements.
Second, contact your doctor's office and ask where they usually send patients for lab work. Your doctor may have a preferred lab that definitely accepts your insurance, or they may be able to refer you to an in-network facility.
Third, check your Medicare plan's provider directory for other labs in your area. LabCorp, Sonora Quest, and local hospital labs often accept Medicare. Your doctor can send your lab requisition to any of these facilities instead.
Frequently Asked Questions
Do I need an appointment at Quest, or can I just walk in?
Most Quest locations accept walk-ins, but you can also schedule an appointment online or by phone. Appointments are often faster, especially during busy times. You can book at Quest.com or by calling 1-800-222-0446. Either way, you still need a lab requisition from your doctor before you arrive.
What if my doctor's office has not sent my lab order to Quest yet?
Call your doctor's office and ask them to send the requisition to Quest. Provide them with the Quest location address or fax number. Most offices can send it electronically within a few hours. You can also ask your doctor to give you a paper copy to bring with you, though electronic orders are faster and reduce paperwork errors.
Will Quest bill my secondary insurance if I have Medigap or a retiree plan?
Yes, Quest will typically bill your secondary insurance after Medicare pays its share. Bring both cards to your appointment. Your secondary insurance may cover some or all of your copay or coinsurance, depending on your plan.
Can I get my lab results online after the test?
Yes. Quest offers an online patient portal where you can view most results within 24 to 48 hours of your test. You can create an account at Quest.com or ask for login information at the time of your visit. Your doctor's office will also receive the results and may contact you if anything needs follow-up.
What if I receive a bill from Quest after my visit?
Contact Quest's billing department at 1-800-222-0446 and explain that you have Medicare. Ask them to verify that they billed Medicare correctly and that you were charged only your copay or coinsurance. If you believe you were overcharged, ask for an itemized bill and contact your Medicare plan's customer service to file a dispute.