Part B doctor visits are the biggest share of routine health care for people on Original Medicare. Most people see a primary care doctor several times a year. Many also see specialists for heart, joint, or diabetes care. Each visit can cost you something, even though Medicare pays most of the bill.
The amount depends on your deductible, your doctor’s billing status, and whether the visit counts as preventive. It also depends on any extra coverage you carry. Knowing how Part B doctor visits are billed helps you plan a budget. It also helps you avoid surprise charges and choose the right supplemental coverage for your family.
How Medicare Part B Covers Office Visits
Medicare Part B is medical insurance. It covers services from doctors and other health care providers. That includes office visits, outpatient care, some home health services, and preventive screenings. Nurse practitioners, physician assistants, and clinical social workers are covered too. According to Medicare.gov, Part B also covers many visits done by telehealth.
Your costs follow a simple pattern. First, you pay the annual Part B deductible. CMS sets the deductible each year, and it typically rises a little every January. After you meet it, you usually pay 20% of the Medicare-approved amount. Medicare pays the other 80%. The approved amount is the fee Medicare sets for each service. It is often lower than the doctor’s listed price.
For example, suppose a specialist visit has a Medicare-approved amount of a set fee. Once your deductible is met, Medicare pays 80% of that fee. You pay the other 20%. This split applies to most Part B doctor visits, whether you see a family doctor or a cardiologist. There is no referral requirement under Original Medicare. You can see any doctor in the country who accepts Medicare.
However, Original Medicare has no yearly out-of-pocket cap. That 20% has no ceiling. If you need many visits, tests, or treatments, the total can climb fast. This is a key reason many people buy Medigap or join a Medicare Advantage plan.
What Changes Your Cost for Part B Doctor Visits
Not every visit costs the same. Several factors change what you owe. The most important one is how your doctor works with Medicare. Doctors fall into three groups. Each group bills you in a different way. As a result, two visits for the same problem can have very different price tags.
A participating provider accepts “assignment.” That means the doctor agrees to take the Medicare-approved amount as full payment. You only owe your deductible and 20% coinsurance. The doctor also bills Medicare for you. In most cases, the large majority of U.S. doctors who treat Medicare patients are participating providers. Medicare.gov has a Care Compare tool to check any doctor’s status.
A non-participating provider accepts Medicare but not always assignment. These doctors can charge up to 15% more than the Medicare-approved amount. That extra is called an “excess charge” or “limiting charge.” You may also have to pay the full bill upfront and wait for Medicare to reimburse you. A few states, including New York, Pennsylvania, Massachusetts, and Minnesota, ban or limit excess charges further.
An opt-out provider has left Medicare entirely. You sign a private contract with that doctor. Medicare pays nothing for those Part B doctor visits. You pay the full price, and there is no limit on fees. Opt-out doctors are uncommon, but they are more frequent in fields like psychiatry.
| Visit or Provider Type | What You Typically Pay |
|---|---|
| Participating doctor (accepts assignment) | Deductible, then 20% of approved amount |
| Non-participating doctor | Deductible, 20%, plus up to 15% excess charge |
| Opt-out doctor (private contract) | 100% of the doctor’s fee |
| “Welcome to Medicare” preventive visit | Nothing, if the doctor accepts assignment |
| Yearly Annual Wellness Visit | Nothing, if the doctor accepts assignment |
| Hospital-owned outpatient clinic visit | 20% coinsurance plus a possible facility copayment |
Preventive care is the big exception to the 20% rule. The “Welcome to Medicare” visit is free within your first 12 months of Part B. After that, you get a free Annual Wellness Visit once every 12 months. Many screenings are also free, such as flu shots and certain cancer screenings.
Watch out, though. If your doctor finds a new problem during a wellness visit, extra care may be billed separately. That added service can trigger your deductible and 20% coinsurance. Also, a visit at a hospital-owned clinic may add a facility fee. That fee can make the same checkup cost more than at an independent office.
How Extra Coverage Changes What You Pay
Most people on Original Medicare do not rely on Part B alone. KFF research shows that only a small share of beneficiaries have no supplemental coverage at all. The rest use Medigap, employer retiree plans, Medicaid, or Medicare Advantage. Each option changes how Part B doctor visits hit your wallet.
Medigap plans are sold by private insurers such as AARP/UnitedHealthcare, Mutual of Omaha, Blue Cross, Aetna, and Cigna. Benefits are standardized by letter in most states. Plan G covers your 20% coinsurance and any excess charges. You pay only the Part B deductible. Plan N also covers coinsurance, but you may owe a small copay for some office visits. Plan N does not cover excess charges. Premiums vary by state, age, and insurer.
Medicare Advantage works differently. Plans from Humana, UnitedHealthcare, Aetna, and others replace Original Medicare. They typically charge a flat copay for primary care visits. Specialist copays are usually higher. Many plans use networks, and HMO plans often require referrals. However, every Medicare Advantage plan must have a yearly out-of-pocket limit. That cap protects you from runaway costs.
People with limited income may qualify for help. A Medicare Savings Program can pay Part B premiums. The Qualified Medicare Beneficiary (QMB) program can also cover deductibles and coinsurance. Doctors cannot bill QMB members for Medicare-covered services. Your state Medicaid office handles applications.
Steps to Lower Your Costs Before Your Next Appointment
A few simple habits can cut what you pay. Start before you book. Small checks now can save real money on Part B doctor visits all year long.
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First, confirm your doctor accepts assignment. Ask the front desk directly, or use the Care Compare tool on Medicare.gov. This single step protects you from excess charges and upfront billing.
Second, schedule your free preventive visits each year. Tell the office you want the Annual Wellness Visit. If you plan to discuss a new symptom, ask whether it will be billed separately. That way you know the cost ahead of time.
Third, ask where the visit will take place. A clinic owned by a hospital may add a facility charge. An independent office often costs less for the same care.
Fourth, review your Medicare Summary Notice. Medicare mails it every four months if you had services. You can also view claims online at Medicare.gov. Check each line for errors or services you did not receive.
Finally, compare your coverage during open enrollment. The Medicare Open Enrollment Period runs October 15 to December 7. Fall 2026 is a good time to check whether your plan still fits your doctor list. Free, unbiased help is available from your State Health Insurance Assistance Program (SHIP). SHIP counselors can compare Medigap and Medicare Advantage options with you at no cost.
Frequently Asked Questions
Does Medicare Part B pay for every doctor visit?
Part B covers medically necessary doctor visits and many preventive services. However, it does not cover routine dental, vision, or hearing exams. It also pays nothing if you see an opt-out doctor.
How much do Part B doctor visits cost after the deductible?
Typically, you pay 20% of the Medicare-approved amount. The rest is paid by Medicare. If the doctor does not accept assignment, you may owe up to 15% more.
Is the Annual Wellness Visit really free?
Yes, if your doctor accepts assignment. You pay no deductible or coinsurance for it. However, extra tests or treatment for new problems may cost you.
Do Medicare Advantage plans charge less for doctor visits?
Many plans charge a flat copay instead of 20% coinsurance. Specialist copays are often higher than primary care copays. Costs vary by plan, so compare options on Medicare.gov each fall.
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Official Sources & Resources
For verified information on Medicare regulations and consumer protection:
- Medicare.gov (Official Site): medicare.gov
- CMS (Centers for Medicare & Medicaid Services): cms.gov
- NAIC (National Association of Insurance Commissioners): naic.org
- KFF Medicare Research: kff.org/medicare
- Social Security Administration: ssa.gov
Content last reviewed September 2026. If you notice any outdated information, please contact us.