What Are Medicare Part B Excess Charges?

What Does Part B Excess Charges Mean?

A Medicare Part B excess charge is when a physician charges the patient more than the Medicare approved amount for an outpatient service.  Only Medicare providers with a non-participating contract are allowed to charge an excess charge, and they are limited to no more than 15% of the Medicare approved amount.

How Common Are Medicare Excess Charges?

Medicare Part B excess charges are rare.  Only 2% of doctors contracted with Medicare are allowed to charge an excess charge and more than 40% of those are in the mental health industry.  These doctors may charge an excess charge, but do not have to.  You can request they charge the standard Medicare rate. Most people go through their entire Medicare experience without ever encountering a doctor that can charge an excess charge.  

The thought of doctors charging Medicare beneficiaries more than the Medicare approved amount is frightening for some. However, as we will detail in this article, Medicare excess charges are rare, easily avoidable, and typically minimal in size. Keep in mind that original Medicare insurance does not cover excess charges. Still, with very little effort, you can avoid unwanted charges.

Medicare Balance Billing

Medicare Part B excess charges are also referred to as Balance Billing. While Medicare beneficiaries typically use the term “excess charges,” Medical providers are more familiar with the term “Balance Billing.” They are the same thing.

Medicare Participating Provider

When doctors decide to accept the federal Medicare program as insurance payments for their services, they are required to sign a contract with the Department of Health and Human Services, which manages the federal Medicare program. The contract is online and can be found by searching for form “OMB No. 0938-0373”. In that contract, doctors must choose between being a Medicare Participating Provider or a Non-Participating Provider.

The Medicare Participating Provider accepts Medicare assignment. Medicare assignment simply means that the doctors allow insurance payments directly from Medicare, and Medicare sets the rates for every service provided. The medical provider is contractually obligated to accept the Medicare assignment as full payment for their service. They cannot charge more.

In return, Medicare will provide an extra service to doctors that accept Medicare assignment. Medicare becomes their one-stop biller. The doctor that accepts Medicare assignment will only bill Medicare. Medicare pays their portion, then electronically communicates to the Medicare supplement plan, if there is one, and dictates to the supplement plan what to pay, to whom, and when.

To accept Medicare assignment means the doctor is paid on a timely basis by both your Medicare plan and the Medigap plans and only needs to bill Medicare. Medicare takes care of everything else for them. For the doctor, this contract provides better cash flow with quick payments and less billing frustration with Medicare handling the details.

Non Participating Medicare Provider

Some doctors decide they want to charge more than the Medicare assignment rates. In that case, they can choose to be a non-participating provider with Medicare. The non-participating provider contract allows doctors to accept original Medicare but also allows them to charge more for their services. They are allowed to charge up to 15% more than doctors that accept Medicare assignment.

Discouraging Non Participating Contracts

However, Medicare discourages doctors from becoming non-participating providers. To discourage them from becoming a non-participating provider and charging Part B excess charges, Medicare will reduce their benefits.

First, Medicare will only pay the non-participating doctor 95% of what they pay a participating provider. As a result, when they charge an excess charge for their medical services, they can only charge 15% more than the 95% they receive. When we go over an example below, you will see how this reduces the full payment plus excess charges to only 9.25% more than what the participating provider receives.

Second, Medicare will not be the one-stop biller for the non-participating provider. This is huge and has significant consequences for the provider who decides not to accept Medicare assignment. The doctor is required to submit a claim to Medicare but cannot submit a claim to the supplement. As a result, the non-participating provider must ask the patient to pay for their services upfront. The patient is required to pay upfront and then submit the payment to Medicare and their supplement insurance for reimbursement.

How Do Medicare Excess Charges Work?

When a patient visits a doctor’s office, they can easily tell if the doctors charge the Medicare approved amount (accept Medicare assignment) or charge Medicare Part B Excess charges. The first sign is when they ask you to pay for all or part of your services upfront and request you seek reimbursement from your Medicare supplement plan.

To be clear, this is not just the Medicare deductible they ask for, but the entire Medicare bill. Also, Part B excess charges can not be added to every part of your Medicare bill.  Only select covered services can have an excess charge.  There are never excess charges, for example, tacked on to the cost of durable medical equipment like walkers or crutches.  

Why do they ask for upfront payment? As mentioned above, Medicare will not be the one-stop biller for the doctor who decides to charge more than the Medicare approved amount. The doctor’s office must still bill Medicare, but they cannot bill your Medigap Plan. The doctor has no contract with the insurance company managing the Medigap plans, so they can’t bill directly. Instead, they ask the patient to pay upfront and seek reimbursement on their own.

Patient Inconvenience

Obviously, paying upfront and seeking reimbursement would be very inconvenient for most patients. This is why most doctors accept Medicare assignment and, therefore, cannot charge Part B excess charges. If your medical provider simply accepts your original Medicare card and supplement and sees you without requiring upfront payment, then you can be assured they accept assignment and cannot charge Medicare Part B excess charges.

From experience, I strongly encourage people to look up their doctor on the Medicare.gov website first before visiting the office. If you attempt to ask the personnel behind the desk, you will often get a blank stare. They are simply not trained in office billing issues.

How Common Are Medicare Part B Excess Charges?

Because of the rules Medicare created to discourage doctors from becoming a non-participating provider and charging more than the Medicare approved amount, very few providers decide to become non-participating and charge Part B excess charges.  According to KFF.org 98% of health care providers accept assignment and cannot charge Part B excess charges.

Medicare’s Participating Provider Program

Currently, the national percentage of healthcare providers who do not accept assignment and can therefore charge a Part B excess charge is 3%. Of those three percent, almost half are mental healthcare professionals who work in a small, often one-person office. Not included in the above is the fact that less than one percent of medical providers opt-out of Medicare entirely.

The bottom line is that most Medicare participants can go through their entire Medicare experience without ever coming across a non-participating provider who can even charge a Medicare Part B excess charge. Virtually all health care providers are participating providers and accept the Medicare approved amount as full payment for their services.

Important Fine Points on Medicare Charges

Just as a picture paints a thousand words, a concrete example of excess charges is the best way to understand how they work. But before we look at an example, here are a few important points that will help increase your understanding and comfort level:

  • There are no Part A excess charges. You cannot be charged an excess charge when an inpatient is in a hospital or other medical facility. Excess charges are allowed for select outpatient services only.
  • There are no Part B excess charges for emergency and related services. See our blog on Medicare ambulance services.
  • Medicare uses an “all-or-none” rule regarding medical offices and hospitals. Simply put, in any medical organization (i.e. hospital, doctor’s office, etc.), either all providers can charge an excess charge or none.
  • Just because a doctor can charge an excess charge doesn’t mean they must charge one. It is negotiable on a case-by-case basis.
  • Medicare Advantage Plans do not allow excess charges.

An Example of Medicare Part B Excess Charges

Now for an example. Let’s say you visit a doctor whose office are non-participating healthcare providers and will charge more than the Medicare assigned rate. Your medical procedure has a standard Medicare assignment rate of $1,000. How much would the excess charge be?

  1. First, Medicare will reduce the amount paid to the provider to 95% of the assignment rate. Thus Medicare’s approved rate is $950.
  2. Second, the doctor can charge up to 15% more than the reduced rate. 15% of $950 = $142.50
  3. Lastly, you will be responsible for the $142.50 excess charge unless you have one of the two Medigap plans that pay excess charges.
  4. The $950 Medicare discounted rate plus the $142.50 balance bill =$109 2.50, just $9.25 more than what a participating provider would receive.

Medicare Supplement Insurance Plans

A Medicare supplement, also called Medigap Plan, can pay your balance due from an excess charge. Of the plans available to you, only Medigap Plan F and Plan G covers excess charges billed. The high deductible versions of these plans will credit the amount you pay toward extra charges as part of your high deductible.

The very popular Medicare supplement Plan N does NOT pay your Part B excess charges.  

Private Plans

Medicare supplement plans are usually offered by a licensed insurance agent. We advise that you seek out an independent licensed Medicare agent; an independent insurance agent specializing in Medicare. An independent insurance agent can show you all the Medicare plans available to you. The right agent can provide complete details on all the plans, show you all your Medicare options and help you purchase the plan. The right plan should lower costs associated with your healthcare.

Understanding Medicare Supplement Insurance Plans

To be clear, Original Medicare is a federal government health insurance program. A Medicare supplemental insurance policy is offered by a private insurance company designed to supplement your Medicare health insurance.  Adding the right Medicare supplement  insurance plan to your Medicare plans can result in the entire amount of your medical bills paid by the combination of Part B and your Medigap plan. The result may be a total bill of zero. you don’t have to know how Medicare Part A & B works because your supplement pays the deductibles and copay.

Benefit Chart of Medicare Supplement Plans


Benefits Medicare Supplement Insurance (Medigap) Plans
A B C D F* G* K L M N
Part A coinsurance and hospital costs (up to an additional 365 days after Medicare benefits are used) 100% 100% 100% 100% 100% 100% 100% 100% 100% 100%
Part B coinsurance or copayment 100% 100% 100% 100% 100% 100% 50% 75% 100% **100%
Blood (first 3 pints) 100% 100% 100% 100% 100% 100% 50% 75% 100% 100%
Part A hospice care coinsurance /copayment 100% 100% 100% 100% 100% 100% 50% 75% 100% 100%
Skilled nursing facility coinsurance - - 100% 100% 100% 100% 50% 75% 100% 100%
Part A deductible - 100% 100% 100% 100% 100% 50% 75% 50% 100%
Part B deductible - - 100% - 100% - - - - -
Part B excess charge - - - - 100% 100% - - - -
Foreign travel (up to plan limits) - - 80% 80% 80% 80% - - 80% 80%
Out-of-pocket max limit NA NA ## ## ## ## $6,620 $3,310 NA ##

Do Medicare Supplements Pay Part B Excess Charges?

Only Plan G and Plan F pay Medicare Part B excess charges.   The high deductible versions of these two Medicare supplement insurance plans will credit excess charges to the plan deductible. However, there are eight states that ban medical providers from charging an excess charge.

Which States Allow Medicare Part B Excess Charges

There are eight states who have adopted laws that override Medicare plans for the benefit of the consumer. These eight states are Connecticut, Massachusetts, Minnesota, New York, Ohio, Pennsylvania, Rhode Island, and Vermont. Residents of these states cannot be charged a Medicare Part B excess charge when visiting a medical provider in their state. In all other states, the consumer is responsible if they wish to avoid Medicare Part B balance billing.

Does Medicare Advantage Cover Excess Charges?

Medicare Advantage Plans do not allow Part B excess charges. If you have an Advantage plan, you will not be charged a Part B excess charge.  

Matthew Claassen, CMT

Medicare Excess Charges Are Dead
Medicare Excess Charges Are Dead

So few doctors have a contract that allows them to charge an excess charge that most people will run into a doctor that can charge a Medicare excess charge.

Matthew Claassen, CMT and CEO of Medigap Seminars Insurance Agency. Medigap Seminars is an award winning premier national Medicare Insurance Brokerage, ranked among the top in the U.S.A. Matthew is considered a leading national expert on Medicare and Social Security. Mr. Claassen is a distinguished member of the Forbes Business council, an invitation only organization of business leaders and entrepreneurs. He and his team have received awards from many of the countries largest insurance companies including Mutual of Omaha, Aetna, Humana, Cigna, United American, United Healthcare and others. His videos have become the most popular Medicare educational videos on YouTube with millions of views. As a financial analyst Matthew lead a team of researchers to win the 2009 Best Equity Research & Strategy Award from The Technical analysis magazine.


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