--- title: Medicare Providers to Revalidate Enrollment description: HHS-CMS is requiring revalidation of provider enrollment on PECOS. --- [![](https://www.mbrbilling.com/hs-fs/hubfs/MBR-Images/logo.png?width=340&name=logo.png)](https://www.mbrbilling.com/) - [Home](https://www.mbrbilling.com/) - [Client Login](http://clientlogin.mbrbilling.com/) - [Contact Us](https://www.mbrbilling.com/contact-us) SEARCH # Medical Billing Blog # Medicare Providers to Revalidate Enrollment Posted by [Ali Ziehm](https://www.mbrbilling.com/blog/author/ali-ziehm) on Fri, Aug, 12, 2011 @ 16:08 PM - [Tweet](https://twitter.com/share) CMS has announced that some Medicare Providers will be required to revalidate their enrollment status in order to comply with Section 6401(a) of the Affordable Care Act.  Any provider who enrolled prior to March 25, 2011 may be affected by the requirement.  Beginning now and going through March 23, 2013, Medicare Administrative Contractors (MAC’s) will be contacting providers who need to revalidate their enrollment.  Only Providers who are contacted by a MAC need to revalidate their enrollment, and they must wait until after they are contacted.  Once notified by the MAC that they need to revalidate their enrollment, providers should follow the protocol set forth in the Provider Enrollment, Chain and Ownership System (PECOS) or complete the Form 855.  Instructions for completing the online portion and mailing supporting documentation can be found on the PECOS site. Medical Billing Resources, Inc. can provide limited assistance with this process to its clients.  For more information about the revalidation drive, please [click here](https://www.mbrbilling.com/hs-fs/file-16653332-pdf/docs/medicareproviderenrollmentrevalidation.pdf). ### Subscribe via Email [![](https://www.mbrbilling.com/hs-fs/file-16642138-png/images/bg/facebook.png)](https://www.facebook.com/MedBillResources) [![](https://www.mbrbilling.com/hs-fs/file-16650079-png/images/bg/twitter.png)](https://twitter.com/#!/MedBillResource) [![](https://www.mbrbilling.com/hs-fs/file-16643229-png/images/bg/linkedin.png)](http://www.linkedin.com/company/medical-billing-resources) [![](https://www.mbrbilling.com/hs-fs/file-16646680-png/images/bg/rss.png)](https://www.mbrbilling.com/CMS/UI/Modules/BizBlogger/rss.aspx?tabid=484940&moduleid=1043750&maxcount=25&u=107101&t=BBE4D262E126601B3B04C3F46C38B13F) [![New Call-to-Action](https://no-cache.hubspot.com/cta/default/119723/112e1d48-db0d-4713-be81-8744e7438136.png)](https://cta-redirect.hubspot.com/cta/redirect/119723/112e1d48-db0d-4713-be81-8744e7438136) [![Click me](https://no-cache.hubspot.com/cta/default/119723/73857c0b-bb42-4989-9f2b-6f01b79dda8d.png)](https://cta-redirect.hubspot.com/cta/redirect/119723/73857c0b-bb42-4989-9f2b-6f01b79dda8d) [![worksheet](https://no-cache.hubspot.com/cta/default/119723/e4db838f-b08e-4fb6-bce4-c965b078dce1.png)](https://cta-redirect.hubspot.com/cta/redirect/119723/e4db838f-b08e-4fb6-bce4-c965b078dce1)     ### Latest Posts ### Browse by Tag - 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