What It Takes to Become a Medicare Provider

To become a Medicare provider, you must enroll with the Centers for Medicare & Medicaid Services (CMS) through a process called PECOS — the Provider Enrollment, Chains, and Ownership System. The basic requirements are a valid medical license or credential in your state, a Social Security number or Employer Identification Number (EIN), and proof that you are not excluded from federal healthcare programs. The time from submission to approval usually takes 30 to 60 days, though it can be longer if CMS requests additional information.

Different types of providers follow slightly different paths. Individual physicians, nurse practitioners, and physician assistants enroll one way. Hospitals, clinics, and group practices enroll another. Suppliers like durable medical equipment companies and home health agencies have their own requirements. The common thread is that you cannot bill Medicare for services until CMS approves your enrollment and issues you a Medicare provider number.

Before you start the enrollment process, make sure you understand what Medicare pays for your type of service and whether the reimbursement rate makes sense for your practice. Medicare payment rates are set by the federal government and do not change based on your location or overhead costs. You can look up payment rates on the CMS website or through your specialty's professional association.

Key Takeaways

  • You enroll through PECOS, the CMS system for Medicare providers, and must have a valid state license, Social Security number or EIN, and proof you are not excluded from federal programs.
  • Individual practitioners, group practices, and suppliers each follow different enrollment pathways, so you need to identify which category your business falls into before starting.
  • Medicare payment rates are set by the federal government and are the same nationwide for the same service code, so you should research rates for your specialty before enrolling.
  • The enrollment process takes 30 to 60 days on average, but CMS may request additional documentation that can extend the timeline.
  • Once enrolled, you must renew your Medicare provider status every five years and report any changes to your practice ownership, location, or credentials within 30 days.

Individual Practitioners: Physicians, Nurse Practitioners, and Physician Assistants

If you are a physician, nurse practitioner, physician assistant, or other individual practitioner, you enroll directly through PECOS as an individual provider. You will need your state medical license number, your Social Security number, and your National Provider Identifier (NPI). If you do not yet have an NPI, you can request one free from the National Plan and Provider Enumeration System (NPPES) before you start the Medicare enrollment.

You will also need to choose whether you want to participate in Medicare or not. A participating provider agrees to accept Medicare's payment as full payment for covered services and bills the patient only for any deductible or coinsurance they owe. A non-participating provider can charge patients more than Medicare allows, though there are limits on how much more. Most individual practitioners choose to participate because it simplifies billing and makes patients more likely to use their services.

During enrollment, CMS will verify your license with your state medical board and check whether you appear on the Office of Inspector General (OIG) exclusion list. If you have any history of fraud, felony conviction, or loss of license, you will be denied. If everything checks out, you receive your Medicare provider number and can begin billing within a few days of approval.

Group Practices and Clinics

If you own or manage a group practice or clinic, you enroll as an organizational provider rather than an individual. You will need your Employer Identification Number (EIN), your group's legal business name, and the names and credentials of all physicians and advanced practitioners who will bill under the group's Medicare number. You also need to designate a person responsible for the group's Medicare compliance — usually the practice manager or office administrator.

CMS will verify that your business is registered with your state and that it is not on the OIG exclusion list. If your group has multiple locations, each location may need its own enrollment if you want to bill separately by site. Some groups choose to enroll each location; others enroll the main office and bill all services under that single number. The choice affects how Medicare tracks your billing patterns and how your payment rates are calculated, so discuss it with your billing manager or accountant before you submit.

Group practices also need to decide on their participation status — whether to accept Medicare's payment as full payment or to allow non-participating billing. This decision applies to the entire group, so all physicians in the practice must follow the same rule. If you later change your participation status, you must notify CMS and the change takes effect on the first day of the next calendar month.

Suppliers and Other Healthcare Businesses

If you operate a durable medical equipment (DME) company, home health agency, laboratory, or other supplier business, you enroll through a different part of PECOS called the Supplier Enrollment pathway. Suppliers must meet state licensing requirements for their type of business and must have a physical location in the United States where Medicare can inspect records if needed. You will also need to pass a background check and prove that you have not been excluded from federal programs.

Suppliers face stricter documentation requirements than individual practitioners. You will need to provide proof of your business license, your liability insurance, and your state permits. If you employ healthcare workers — such as home health aides or phlebotomists — you must show that they are properly credentialed and trained. CMS may conduct an on-site inspection before approving your enrollment, especially if you are a new home health agency or DME supplier.

Suppliers also must comply with specific Medicare billing rules for their type of service. For example, DME suppliers must rent or sell items on the Medicare-approved list and cannot bill for items that are not on that list. Home health agencies must employ a nurse supervisor and follow detailed documentation rules for each patient visit. Before you enroll, make sure you understand the billing rules and compliance requirements for your specific type of business.

The PECOS Enrollment Process: Step by Step

To enroll through PECOS, you first create an account on the CMS PECOS website using your Social Security number or EIN and your date of birth. You will receive a username and password by email. Once you log in, you select your provider type — individual, group, or supplier — and begin filling out the enrollment process.

The process asks for your personal or business information, your credentials and licenses, your practice location and contact details, and information about anyone who owns more than 5 percent of your business. You will also declare whether you have ever been convicted of a crime, excluded from federal programs, or had your license suspended or revoked. Be honest on this section — CMS cross-checks your answers against federal databases, and false statements can result in denial or later removal from Medicare.

After you submit your process, CMS sends you a confirmation email with a receipt number. You can check the status of your process by logging back into PECOS and entering your receipt number. If CMS needs more information, it will send you a letter or email asking for specific documents — such as a copy of your state license, proof of malpractice insurance, or a lease for your office location. You typically have 30 days to respond. If you do not respond, your process is denied and you must start over.

Once CMS approves your enrollment, you receive a letter with your Medicare provider number. This number is how Medicare identifies you in its payment system. You use this number on all claims you submit to Medicare. You can also look up your provider number anytime by logging into PECOS or by calling the CMS Provider Enrollment Line at 1-866-820-1890.

Maintaining Your Medicare Provider Status

After you enroll, your Medicare provider status is active for five years. During that time, you must keep your information current in PECOS. If you move your office, change your phone number, add a new location, or change your ownership structure, you must report the change within 30 days. You can make these updates by logging into PECOS and editing your profile.

You must also maintain your state medical license or credential and stay off the OIG exclusion list. If your license is suspended, revoked, or surrendered, you must notify CMS within 30 days. If you are convicted of a crime or excluded from federal programs, Medicare will remove you automatically once the exclusion is entered into the federal database.

Every five years, before your enrollment expires, CMS sends you a notice asking you to renew. The renewal process is similar to the initial enrollment — you log into PECOS, confirm or update your information, and submit. Renewal usually takes 30 to 60 days. If you do not renew before your status expires, you cannot bill Medicare until you re-enroll, which starts the process over from the beginning.

What to Ask Your CMS Provider Enrollment Specialist

If you have questions during the enrollment process, you can call the CMS Provider Enrollment Line at 1-866-820-1890. The line is open Monday through Friday, 8 a.m. to 8 p.m. Eastern time. Have your Social Security number or EIN and your receipt number ready when you call.

Ask your specialist which provider type category fits your situation, what documents you need to gather before you start, and how long the process typically takes for your type of provider. If you are unsure whether Medicare covers the services you plan to offer, ask the specialist to point you to the Medicare coverage rules for your specialty. You can also ask whether your state has any special enrollment requirements or restrictions for your type of provider.

If your process is denied, CMS sends you a letter explaining why. You have the right to appeal the denial. The appeal process is separate from the enrollment process and can take several months. If you receive a denial letter, contact a healthcare attorney or your professional association — many associations offer guidance on appeals to members.

Frequently Asked Questions

Do I need malpractice insurance to enroll in Medicare?

Medicare does not require you to carry malpractice insurance as a condition of enrollment. However, most states require physicians to carry it, and most hospitals and group practices require their providers to carry it as a condition of employment or affiliation. Check your state's requirements and your practice's insurance policy before you enroll.

Can I enroll in Medicare while I am still in training or residency?

No. You must have completed your training and have an active, unrestricted state medical license or credential to enroll. If you are a resident or fellow, you bill through your hospital or training program's Medicare provider number, not your own. Once you finish training and obtain your license, you can enroll individually.

What happens if I want to stop accepting Medicare patients?

You can withdraw from Medicare at any time by submitting a request through PECOS or by sending a letter to your local Medicare Administrative Contractor (MAC). Your withdrawal takes effect on the date you request it. After you withdraw, you cannot bill Medicare for any services, even if the patient asks you to. You can re-enroll later if you change your mind, but you must go through the full enrollment process again.

How long does it take to get a Medicare provider number after I am approved?

Once CMS approves your enrollment, you receive your Medicare provider number in the approval letter. You can start billing Medicare when ready, though it may take a few days for the number to appear in all of Medicare's systems. If you submit a claim before the number is fully activated, the claim may be delayed. Call your local MAC to confirm your number is active before you submit your first claim.

What is the difference between a Medicare provider number and an NPI?

Your NPI (National Provider Identifier) is a unique 10-digit number assigned to you by the federal government. It identifies you as a healthcare provider across all insurance systems, not just Medicare. Your Medicare provider number is assigned by CMS when you enroll and is used only for Medicare billing. You need both numbers to bill Medicare — the NPI goes on the claim form, and the Medicare number tells CMS which provider account to credit.