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Medicare Provider

Become a Medicare Provider: Are
you a provider interested in serving
Medicare patients?

Resources for Providers


Find your MAC: Do you know our Medicare Administrative Contractors (MACs) can help you enroll or re-enroll, understand billing requirements, and answer other administrative questions you may have about Medicare? Access a list of CMS contractors in your state and find your MAC today.

Revalidate your Medicare Enrollment: Already a Medicare provider? Be sure to revalidate your Medicare enrollment. Check your revalidation due date and learn more about the different revalidation methods. Our revalidation application checklist covers what you need to get started.

Withdraw from Medicare: We are sorry to see you go. If you have retired, surrendered your license, or no longer want to participate in the Medicare program, you should withdraw within 90 days. Report this change online through PECOS.

Update or get a new National Provider Number (NPI): Need an NPI? Do you have one and want to make sure your information is up to date? Log in to the NPI system, known as NPPES, to get started.

See the changes we've made to medical reviews: When claims are submitted accurately, everyone benefits. Learn how the new Targeted Probe and Educate (TPE) program better targets medical reviews, limits the number of claims requested, and puts an emphasis on education and assistance to correct claims.

Check your Open Payments data: Do you have payments reported in the Open Payments database? Find out on the Open Payments website or if you already have an account, log in to the portal to review.

Sign up for compliance updates: Subscribe to the provider compliance email list and be the first to know about events and opportunities to collaborate with CMS and your fellow providers.



Strengthen your fight against
Medicaid fraud, waste, and abuse
The Medicaid Program Integrity
Strategy includes stronger audits and
oversight functions, increased data sharing, and technical assistance.

Resources for States


Strengthen safeguards in Personal Care Services: Read about noteworthy practices and CMS guidance in the CMS Medicaid Integrity Institute paper, Vulnerabilities and Mitigation Strategies in Medicaid Personal Care Services and the CMS FAQ on Allowability of Using National Provider Identifiers (NPIs) for Medicaid Personal Care Attendants (PCAs).

Join the fight against the opioid epidemic: The Medicaid Integrity Institute Compendium of Promising Practices explores how states are addressing program integrity vulnerabilities produced by opioid misuse and abuse. Learn more.

Join the Healthcare Fraud Prevention Partnership: Learn how sharing data with others in the healthcare industry, both public and private entities, can help your organization identify and reduce fraud, waste, and abuse across the healthcare sector. Learn more about the HFPP and find out how to become a partner.

Learn the latest in fraud schemes and detection: The Medicaid Integrity Institute (MII) exists to educate and train our state partners. Located in Columbia, South Carolina and developed by CMS in partnership with the Department of Justice, MII brings together experts - including law enforcement - to deliver up-to-date information on trends and strategies. See the latest course offerings on the MII website.

Find guidance on federal Medicaid enrollment standards: The Medicaid Provider Enrollment Compendium (MPEC) is one of many resources available to state Medicaid agencies on's Medicaid program integrity resources page. Specifically, the MPEC provides guidance and clarification to help Medicaid agencies comply with regulations around Disclosure of Information by Providers, and Fiscal Agents and Provider Screening and Enrollment.

Stay on top of Medicaid best practices and fraud prevention: Visit the Medicaid Program Integrity Education page to find toolkits, videos, podcasts, and more to help eliminate fraud, waste, and abuse.


Healthcare Fraud Prevention Partnership

Join the Healthcare Fraud
Prevention Partnership
: Learn how sharing data with others in the
health care industry can help fight
fraud, waste, and abuse.

Resources for Partners


New Medicare cards have arrived! By now, all people on Medicare should have received their new cards with their new Medicare ID numbers. But just because the cards are all mailed doesn't mean the fraud schemes stop. Anyone suspecting healthcare fraud, waste or abuse is encouraged to report it. Our Reporting Fraud page lists the different options for doing so.

Check the Open Payments data: The Open Payments program publishes information about payments made to providers and teaching hospitals by the pharmaceutical and medical device industries. Find out more on the Open Payments website.


Connect with CPI as we host or attend various events throughout the year, join the conversation on Twitter around subjects that matter to all of us, or find the most appropriate vehicle to report suspected fraud, waste or abuse.